Lukasiewicz-Moisil Many-Valued Logic Algebra of Highly-Complex Systems vs the Q-logics of Quantum Automata and Chryssippian Logic

Lukasiewicz-Moisil Many-Valued Logic Algebra of Highly-Complex Systems vs the Q-logics of Quantum Automata and Chryssippian Logic

Łukasiewicz-Moisil Many-Valued Logic Algebra of Highly-Complex Systems vs the Q-logics of Quantum Automata and Chryssippian Logic

Oct 19th, 2010

I. C. Baianu, G. Georgescu and J. F. Glazebrook

I. C. Baianu]

G. Georgescu]

J. F. Glazebrook]

Keywords:LM–algebraic logic, LM–logic algebrasPlanetmathPlanetmath, algebraic categoryPlanetmathPlanetmathPlanetmath of LM-logic algebrasMathworldPlanetmath, fundamental theorems of LM-logic algebra, centered n–Łukasiewicz algebras, categoriesMathworldPlanetmath of n–Łukasiewicz logic algebras, categories of Boolean logic algebras, Adjointness theoremMathworldPlanetmath, many-valued logics of highly complex systems and Categorical Ontology, non-linear genetic networks, nonlinear dynamics, Epigenomics, Cellular Interactomics, Immunology and hormonal regulatory systems, category theoryMathworldPlanetmathPlanetmathPlanetmathPlanetmath, functorsMathworldPlanetmath and natural transformations, toposes and Heyting logic algebras, quantum automata categories, limits and colimitsMathworldPlanetmath, quantum automata homomorphismsMathworldPlanetmathPlanetmathPlanetmathPlanetmathPlanetmathPlanetmathPlanetmathPlanetmathPlanetmathPlanetmath, Abelian categoryMathworldPlanetmathPlanetmathPlanetmath, bicomplete categories, Quantum Relational Biology, generalised metabolic-replication (M,R)–systems, complex bionetworks, quantum logic, non-commutative lattices, Hilbert spaceMathworldPlanetmath, quantum computersPlanetmathPlanetmath, computability of complex biological systems, Cartesian closed categories, extended quantum topos, category of groupoidsPlanetmathPlanetmath, dynamic realisations of generalised (M,R)-systems (GMRs), category of GMRs, compact subsystems of GMRs, direct sumsMathworldPlanetmathPlanetmathPlanetmath, fundamental groupoidMathworldPlanetmathPlanetmathPlanetmath of a dynamic state spaceMathworldPlanetmath, Hopf algebraMathworldPlanetmathPlanetmathPlanetmath, quantum groupsPlanetmathPlanetmathPlanetmathPlanetmathPlanetmathPlanetmath, bialgebraPlanetmathPlanetmathPlanetmath, quantum groupoidsPlanetmathPlanetmath, weak Hopf algebra, Yang-Baxter equations, Homotopy theory, homotopy category, n-categories, Higher Dimensional Algebra.

2000 Mathematics Subject Classification: OG320, OG330, 03G30 (Algebraic logic:: Categorical logic, topoi), 03G20 (Algebraic logic:: Lukasiewicz algebras), 03G12 (Quantum logic), 93A30 (Systems theory; control :: General :: Mathematical modeling ), 18A15 (Category theory; General theory of categories and functors : Foundations, relationsMathworldPlanetmathPlanetmathPlanetmath to logic), 18A40 (Category theory: General theory of categories and functors:: Adjoint functorsMathworldPlanetmathPlanetmath ), 93B15 (Systems theory; control:: Realizations from input-output data), 92D10 (Genetics and population dynamics::Genetics), 18B40 (Category theory: Special categories :: GroupoidsPlanetmathPlanetmathPlanetmathPlanetmath, semigroupoids, semigroupsPlanetmathPlanetmath, groups), 18G55 (Category theory;Homotopical algebra), 55U40 (Algebraic topology: Applied category theory:: Foundations of homotopy theory), 55U35 (Algebraic topology:: Applied category theory :: Abstract and axiomatic homotopy theory).

1. Introduction

Long before Boole, Chrysippus of Soli (Ancient Greek: Chrysippos ho Soleus; c. 279–206 BC) – who was a Greek Stoic philosopher– introduced the idea of a two-value logic, now called Boolean. It is the operational logic of everyday computing and Hilbert’s theory of Logical PredicatesMathworldPlanetmathPlanetmath or Symbolic Logic. The first system of multiple-valued logic was introduced by Jan Łukasiewicz in 1920, and independently, by E. Post who also introduced in 1921 a different multiple-valued logic that carries his name. Subsequently, in 1930’s Łukasiewicz and Tarski studied a logic with truth values in the continuousPlanetmathPlanetmath interval [0,1] of real numbers. However, an algebraic formulation of many-valued (MV) logic was missing until its introduction by Acad. Grigore C. Moisil who defined the 3-valued and 4-valued Łukasiewicz algebras in 1940 [31], and the n-valued Łukasiewicz algebras (n>2) in 1942. Boolean algebrasMathworldPlanetmath, that are defined as algebraic models of classical, or chryssipian-Boolean logic, are then only particular cases of the new structuresMathworldPlanetmath. of MV-logic. In the description of a logical system, the implicationMathworldPlanetmath was traditionally the principal connector. The n-valent system of Łukasiewicz had as truth values the elements of a certain set Ln and was built around a new conceptMathworldPlanetmath of implication, on which are based the definitions of the other connectors. On the other hand for Moisil and modern mathematical logicians, the basic structure is that of a latticeMathworldPlanetmath, to which he added a negationMathworldPlanetmath (thus generating the so-called ”De Morgan algebra”) together with certain unary operations (that were called by Moisil “chryssipian endomorphismsMathworldPlanetmath), that represent the “nuancing”, or nuances of MV-logic. Therefore, the fundamental concept of Moisil logic is that of nuancing.The Łukasiewicz implication has then taken secondary place, and– in the case of an arbitrary valence– was completely left out. lt is henceforth appropriate to refer to such MV-algebras as Łukasiewicz-Moisil algebras or LM- logic algebras. The logic corresponding to n-valued Łukasiewicz-Moisil algebras was published by Moisil in 1964 [35].

A characterizationMathworldPlanetmath of the category of LM- logic algebras was published by Georgescu and Vraciu in 1970 [15]. A more detailed account of LM–logic algebras than the early work reported in [15] was recently published in refs.[1] and [16], with the latter paper also including a comparison among several MV-logics such as the Post logic, as well as the relevance of MV-logics to Complex Systems Biology (CSB), highly-complex systems, fuzzy structures, the MV-logic foundations of Probability Theory and Biostatistics.

Interestingly, Acad. Moisil also considered the applications of LM-logic algebras to switching circuits, new designs of automata and computers based on LM-logic algebras [32]-[33], [37]-[39]; his early results in the latter fields are also pertinent to this article. An alternative approach is provided by the formalism of variable categories [40] that would allow in principle the construction of artificial intelligence systems with varying transition functions which would exhibit adaptive, learning behaviors. We are taking further these previous results and ideas through a comparison of LM-logic algebra categories– and their appications to representations of functionalMathworldPlanetmathPlanetmathPlanetmathPlanetmath genomes and genetic networks–with the operational Q–logic algebras of categories of both quantum automata and quantum supercomputers that may result in a deeper understanding of highly-complex systems and also in improved design, biomimetic strategies for artificial intelligent meta–systems.

2. Algebraic Logic, Operational and Łukasiewicz Quantum Logic

As pointed out by Birkhoff and von Neumann as early as 1936, a logical foundation of quantum mechanics consistent with quantum algebra is essential for both the completeness and mathematical validity of the theory. The development of Quantum Mechanics from its very beginnings both inspired and required the consideration of specialized logics that are designed to be compatible with a new theory of measurements applicable to microphysical systems. Such a specialized logic was initially formulated by Birkhoff and von Neumann in 1936, and called ‘Quantum Logic’ or Q-logic (QL). However, in recent QL research several distinct approaches were developed involving several types of non-distributive lattice, and their corresponding algebras, for n–valued quantum logics. Thus, modifications of the Łukasiewicz, and indeed of Łukasiewicz-Moisil (LM) logic algebras, that were introduced in the context of algebraic categories [14] by Georgescu and Popescu [15] (also recently reviewed and expanded by Georgescu [16]) can provide an appropriate framework for representing quantum systems; alternatively, in their unmodified form, such LM-logic algebras were found to be instrumental in describing, or formally representing, the activities of complex networks in categories of such LM-logic algebras [6].

There is, nevertheless, a serious problem remaining in the recent Q-logic literature which is caused by the logical inconsistency between any quantum algebra and the Heyting logic algebra that has been seriously suggested as a candidate for quantum logic. Furthermore, quantum algebra and topological approaches that are ultimately based on set-theoretical concepts and differentiable spaces (manifolds) also encounter serious problems of internal inconsistency. Since it has been shown that standard set theoryMathworldPlanetmath– which is subject to the axiom of choiceMathworldPlanetmath– relies on Boolean logic, there appears to exist a basic logical inconsistency between the quantum logic–which is not Boolean–and the Boolean logic underlying all differentiable manifold approaches that rely on continuous spaces of points, or certain specialized sets of elements. A possible solution to such inconsistencies is the definition of a generalized Topos concept, and more specifically, of an Extended Quantum Topos (EQT) concept which is consistent with both Q-logic and Quantum logic algebras, thus being potentially suitable for the development of a framework that may unify quantum field theories with ultra-complex system modeling and Complex Systems Biology (CSB).

3. Lattices and Von Neumann-Birkhoff (VNB) Quantum Logic: Definition and Some Logical Properties

We commence here by giving the set-based definition of a lattice. An s–lattice 𝐋, or a ‘set-based’ lattice, is defined as a partially ordered setMathworldPlanetmath that has all binary productsMathworldPlanetmathPlanetmathPlanetmathPlanetmath (defined by the s–lattice operationMathworldPlanetmath”) and coproducts (defined by the s–lattice operation “ ”), with the ”partial ordering” between two elements X and Y belonging to the s–lattice being written as “XY”. The partial order defined by holds in L as XY if and only if X=XY (or equivalently, Y=XY Eq.(3.1).

A lattice can also be defined as a category (see for example, ref.[9]) subject to all ETAC axioms, (but not subject, in general, to the Axiom of Choice usually encountered with sets relying on (distributive) Boolean Logic), that has all binary products and all binary coproducts, as well as the following ’partial ordering’ properties:

As an example, let us consider the logical structure formed with all truth ’nuances’ or assertions of the type system A is excitable to the i-th level and system B is excitable to the j-th level that defines a special type of lattice which is subject to the axioms introduced by Georgescu and Vraciu [15], thus becoming a n-valued Łukasiewicz-Moisil, or LM-Algebra. Further algebraic and logic details are provided in refs.[16] and [9]. Such a logical structure is usually associated with the functioning of a neural network, either natural in an organism or artificial as in Artificial Intelligence (AI) systems. However, it can also be found in vivo in functional genomes of various organisms.

In order to have the n-valued Łukasiewicz-Moisil logic (LML) algebra represent correctly the basic behavior of quantum systems [3], [17],[24],[44] –which is usually observed through measurements that involve a quantum system interactions with a macroscopic measuring instrument– several of these axioms have to be significantly changed so that the resulting lattice becomes non-distributive and also (possibly) non-associative. Several encouraging results in this direction were recently obtained by Dala Chiara and coworkers. With an appropriately defined quantum logic of events one can proceed to define Hilbert, or ‘nuclear’/Frechet, spaces in order to be able to utilize the ‘standard’ procedures of quantum theoriesPlanetmathPlanetmath [17], [24].

On the other hand, for classical systems, modeling with the unmodified Łukasiewicz logic algebra can also include both stochastic and fuzzy behaviors. For examples of such models the reader is referred to a previous report [6] where the activities of complex genetic networks are considered from a classical standpoint. One can also define as in [8] the ‘centers’ of certain types of Łukasiewicz n-logic algebras; then one has the following important theorem for such centered Łukasiewicz n-logic algebras which actually defines an equivalence relationMathworldPlanetmath.

Theorem 3.1.

The Logic Adjointness Theorem (Georgescu and Vraciu (1970) in ref.[15]. There exists an Adjointness between the Category of Centered Łukasiewicz n-Logic Algebras, CLuk–n, and the Category of Boolean Logic Algebras (Bl).

Remark 3.1.

The logic adjointness relation between CLuk–n and Bl is naturally defined by the left- and -right adjoint functors between these two categories of logic algebras.

Remark 3.2.

The natural equivalence logic classes defined by the adjointness relationships in the above Adjointness Theorem define a fundamental, ‘logical groupoid’ structure.

Remark 3.3.

In order to adapt the standard Łukasiewicz-Moisil logic algebra to the appropriate Quantum Łukasiewicz-Moisil logic algebra, LQL, a few axioms of LM-algebra need modifications, such as : N(N(X))=YX (instead of the restrictive identityPlanetmathPlanetmathPlanetmathPlanetmathPlanetmath N(N(X))=X, whenever the context, ‘reference frame for the measurements’, or ‘measurement preparation’ interaction conditions for quantum systems are incompatible with the standard ‘negation’ operation N of the Łukasiewicz-Moisil logic algebra; the latter remains however valid for classical or semi–classical systems, such as various complex networks with n-states (cf.[6]– [7]). Further algebraic and conceptual details were provided in a rigorous review by George Georgescu [16], and also in [6] as well as in recently published reports [10], [41].

4. Quantum Automata and Quantum Computation

Quantum computation and quantum ‘machines’ (or nanobots) were much publicized in the early 1980’s by Richard Feynman (Nobel Laureate in Physics for his approach to Quantum Electrodynamics, or QED), and subsequently a very large number of papers were published on this topic by a rapidly growing number of quantum theoreticians and some applied mathematicians. Two such specific definitions of QAs are briefly considered next.

Quantum automata were defined in refs. [2] and [3] as generalized, probabilistic automata with quantum state spacesPlanetmathPlanetmath. Their next-state functions operate through transitions between quantum states defined by the quantum equations of motions in the Schrödinger representation, with both initial and boundary conditions in space-time. Such quantum automata are here renamed as S-quantum automata.

Definition 1. One obtains a simple, formal definition of S-quantum automaton by considering instead of the transition function of a classical sequential machine, the (quantum) transitions in a finite quantum system with definite probabilities determined by quantum dynamics. The quantum state space of a quantum automaton is thus defined as a quantum groupoid over a bundle of Hilbert spaces, or over rigged Hilbert spacesMathworldPlanetmathPlanetmath.

Formally, whereas a sequential machine, or state machine with state space S, input set I and output set O, is defined as a quintuple: (S,I,O,δ:S×SS,λ:S×IO), an S- quantum automaton is defined by a triple (H,Δ:HH,μ), where H is either a Hilbert space or a rigged Hilbert space of quantum states and operators acting on H, and μ is a measure related to the quantum logic, LM, and (quantum) transition probabilities of this quantum system.

Two new theorems are also noted in this context (albeit stated here without proof):

Theorem 4.1.

Bicompleteness Theorem. The category of S-quantum automata and S-quantum automata homomorphisms has both limits and colimits.

Theorem 4.2.

Classical EmbeddingMathworldPlanetmath Theorem. The category of classical, finite automata is a subcategoryMathworldPlanetmath of the category of S-quantum automata.

Therefore, both categories of S-quantum automata and classical automata (sequential machines) are bicomplete as Theorem 3 states that the standard automata category, CSA, is a subcategory of the S-quantum automata category, CQA, or in shorthand notation: CSACQA.

Remark 4.1.

Quantum computation becomes possible only when macroscopic blocks of quantum states can be controlled via quantum preparation and subsequent, classical observation. Obstructions to actually building, or constructing quantum computers are known to exist in dimensionsMathworldPlanetmathPlanetmathPlanetmath greater than 2 as a result of the standard
K-S theorem. Subsequent definitions of quantum computers reflect attempts to either avoid or surmount such difficulties often without seeking solutions through quantum operator algebrasPlanetmathPlanetmathPlanetmath and their representations related to extended quantum symmetries which define fundamental invariants that are key to actual constructions of this type of quantum computers.

Defining a quantum automaton as an object of a Quantum Algebraic Topology (QAT) theory requires the concept of quantum groupoid (or of a weak Hopf algebra) which is defined as follows.

Definition 2 Quantum groupoids, QGd’ s, are currently defined either as quantized, locally compact groupoidsPlanetmathPlanetmath endowed with a left Haar measure system, (Gd,μ), or as weak Hopf algebras (WHA). This concept can also be considered as an extensionPlanetmathPlanetmathPlanetmath of the notion of quantum group, which is sometimes represented by a Hopf algebra, 𝖧.

The concept of Hopf algebra, or ‘quantum group’, will be introduced next in three steps.

Definition 3. Firstly, an unital associative algebra consists of a linear space A together with two linear maps


satisfying the conditions:




Next let us consider ‘reversing the arrows’, and take an algebra A equipped with a linear homorphisms Δ:AAA, satisfying, for a,bA:




We call Δ a comultiplication, which is said to be coassociative. There is also a counterpart to η, the counity map ϵ:A𝐂 satisfying

(4.1) (idϵ)Δ=(ϵid)Δ=id.

Definition 4. A bialgebra (A,m,Δ,η,ϵ) is defined as a linear space A with maps m, Δ, η, ϵ satisfying the above properties.

Now, in order to recover anything resembling a group structure, one must append such a bialgebra with an antihomomorphismMathworldPlanetmath S:AA, satisfying

(4.2) S(ab)=S(b)S(a),

for a,bA. This map is defined implicitly via the property:

(4.3) m(SidΔ)=m(idS)Δ=ηϵ

We call S the antipode map.

Definition 5. A Hopf algebra is then defined as a bialgebra (A,m,η,Δ,ϵ) equipped with an antipode map S.

CommutativePlanetmathPlanetmathPlanetmath and non-commutative Hopf algebras form the backbone of quantum groups [17],[23], [24], and are thus essential to the generalizationsPlanetmathPlanetmath of symmetryPlanetmathPlanetmath. Indeed, in most respects a quantum group is identifiable with a Hopf algebra. When such algebras are actually associated with proper groups of matrices there is considerable scope for their representations on both finite and infinite dimensional Hilbert spaces.

Alternatively, as defined in refs.[17],[23] quantum groupoids can be regarded simply as weak Hopf algebras. Algebroid symmetries, on the other hand, figure prominently both in the theory of dynamical deformations of quantum ‘groups’ (e.g., Hopf algebras) and the quantum Yang–Baxter equations.

Definition 6. In order to define a weak Hopf algebra, one can relax certain axioms of a Hopf algebra as follows:

  • (1)

    The comultiplication is not necessarily unit-preserving.

  • (2)

    The counit ϵ is not necessarily a homomorphism of algebras.

  • (3)

    The axioms for the antipode map S:AA with respect to the counit are as follows. For all hH,

    (4.4) m(idS)Δ(h)=(ϵid)(Δ(1)(h1)),
    (4.5) m(Sid)Δ(h)=(idϵ)((1h)Δ(1)),
    (4.6) S(h)=S(h(1))S(h(2))S(h(3))

Several mathematicians substitute the term quantum groupoid for a weak Hopf algebra, although this algebra in itself is not a proper groupoid, but it may have a component group algebra as in certain examples of the quantum double; nevertheless, weak Hopf algebras generalise Hopf algebras that, with additional properties, were previously introduced as‘ quantum groups’ by mathematical physicists.

Note, however, that the requirement of local compactness for quantum groupoids, as well as that of the existence of a left Haar measure system, is not generally considered for quantum groups. Quantum groupoid representations can thus define extended quantum symmetries beyond the ‘Standard Model’ (SUSY) in Mathematical Physics or Noncommutative GeometryPlanetmathPlanetmath.

Definition 7. An algebraic quantum automaton, or A-quantum automaton can now be defined as a quantum algebraic topology object– the triplet

(4.7) QA=(Gd,H-RGd,Aut(G)),

where Gd is a locally compact quantum groupoid, H-RGd are the unitary representationsMathworldPlanetmath of Gd on rigged Hilbert spaces RGd of quantum states and quantum operators on H, and Aut(Gd) is the transformationPlanetmathPlanetmath, or automorphism, groupoid of quantum transitions that represents all flip-flop quantum transitions of one qubit each between the permitted quantum states of the quantum automaton.

Remark 4.2.

Other definitions of quantum automata and quantum computations have also been reported that are closely related to recent experimental attempts at constructing quantum computing devices. One can consider next the category of quantum automata.

Definition 8. The category of algebraic quantum automata CQA is defined as an algebraic category whose objects are A-quantum automata defined by triples (H,Δ:HH,μ) (where H is either a Hilbert space or a rigged Hilbert space of quantum states and operators acting on H, and μ is a measure related to the quantum logic, LM, and (quantum) transition probabilities of this quantum system, and whose morphisms are defined between such triples by homomorphisms of Hilbert spaces, Δ:HH, naturally compatible with the operators Δ, and by homomorphisms between the associated Haar measure systems.

An alternative definition is also possible based on Quantum Algebraic Topology.

Definition 9. A quantum algebraic topology definition of the category of algebraic quantum automata CQA involves the objects specified above in Definition 4 as A-quantum automaton triples (QA), and quantum automata homomorphisms defined between such triples; these QA morphisms are defined by groupoid homomorphisms h:GdGd* and α:Aut(Gd)Aut(Gd*), together with unitarity preserving mappings u between unitary representations of Gd on rigged Hilbert spaces (or Hilbert space bundles).

Theorem 4.3.

Quantum-Algebraic Bicompleteness Conjecture. The category of A-quantum automata and A-quantum automata homomorphisms has both limits and colimits.

With these definitions we can now turn to the question of how one can apply quantum automata to modelling problems of highly complex systems and Complex Systems Biology.

5. Quantum Automata Applications to Modelling Complex Systems

One finds that the quantum automata category has a faithful representationMathworldPlanetmath in the category of generalised (M,R) -systems (GMRs) which are open, dynamic bio-networks [6] with defined biological relations that represent physiological functions of primordial(s), single cells and higher organisms. A new category of quantum computers, CQC, can also be defined in terms of reversible quantum automata with quantum state spaces represented by topological groupoids that admit a local characterization through unique ‘quantum’ Lie algebroids. On the other hand, the category of n-Łukasiewicz algebras has a subcategory of centered n- Łukasiewicz algebras [15] (which can be employed to design and construct subcategories of quantum automata based on n-Łukasiewicz diagrams of existing VLSI. Furthermore, as shown in ref. [15] the category of centered n-Łukasiewicz algebras and the category of Boolean algebras are naturally equivalent.

VariableMathworldPlanetmath machines with a varying transition function were previously discussed informally by Norbert Wiener as possible models for complex biological systems although how this might be achieved in Biocybernetics has not been specifcally, or mathematically, presented by Wiener. Therefore, let us consider the formal definitions of simple (M,R)-systems and their generalisations. The simplest MR-system is a relational model of the primordial organism which is defined by the following categorical sequence (or diagram) of sets and set-theoretical mappings: f:AB,ϕ:BHomMR(A,B), where A is the set of inputs to the MR-system, B is the set of its outputs, and ϕ is the ‘repair map’, or R-component, of the MR-system which associates to a certain product, or output b, the ‘metabolic’ component (such as an enzyme, E, for example) represented by the set-theoretical mapping f. Then, HomMR(A,B) is defined as the set of all such metabolic (set-theoretical) mappings (occasionally written incorrectly by some authors as {f}).

Definition 10. A general (M,R)-system was defined by Rosen (1958a,b) as the network or graph of the metabolic and repair components of the type specified specified above in the definition of a simple (M,R) -system; such components are networked in a complex, abstract ‘organism’ defined by all the abstract relations and connecting maps between the sets specifying all the metabolic and repair components of such a general, abstract model of the biological organism. The mappings between (M,R)-systems are defined as the the metabolic and repair set-theoretical mappings, such as f and ϕ (as specified in the definition of a simple (M,R) -system); moreover, there is also a finite number of sets (just like A and B, respectively, the input and output sets, that are present in the definition of a simple (M,R) -system): Ai,Bi, where fiHomMRi(Ai,Bi) and ϕHomMRi[B,HomMRi(Ai,Bi)], with iI, and I being a finite index setMathworldPlanetmathPlanetmath, or directed setMathworldPlanetmath, for a a finite number n of distinct metabolic and repair components pairs (fi,ϕi). Alternatively, one may think of a general MR-system as consisting of a finite number N of inter–connectedPlanetmathPlanetmath metabolic-repair,MRi, modules, each one such MRi module having the input sets Ai and output sets Bi, with i=1,2,,n being finite integers. To sum up: a general MR-system can be defined as a family of n inter–connected quartets: {(Ai,Bi,fi,ϕi)}iI, where I is an index set of finite integers i=1,2,,n.

With these concepts available we can now turn to defining the category of (M,R)–systems, 𝐂MR.

Definition 11. A category 𝐂MR of (M,R)-system quartet modules,
{(Ai,Bi,fi,ϕi)}iI, with I being an index set of integers i=1,2,,n, is a small category of sets with set-theoretical mappings defined by the (M,R)-morphisms between the quarted modules {(Ai,Bi,fi,ϕi)}iI, and also with repair components defined as ϕiHomMRi[B,HomMRi(Ai,Bi)], where the (M,R)-morphism composition is defined by the usual composition of functions between sets.

With a few, additional notational changes it can be shown that the category of (M,R)-systems is a subcategory of the category of automata (or sequential machines), 𝒮[M,A]. Similar conclusionsMathworldPlanetmath were also reached independently in ref. [22]. Moreover, one has the following important property of the category 𝐂MR of simple (M,R)-systems.

Theorem 5.1.

(M,R)-Systems Category Theorem (Baianu, 1973 in ref. [4]. The category 𝐂MR of simple (M,R)-systems and their homomorphisms is Cartesian closed.

Remark 5.1.

Thus, the category 𝐂MR of simple (M,R)-systems belongs to the important family of categories that are Cartesian closed, which also includes the category of sequential machines/classic automata and the category of groupoids; therefore, one would be able to develop a homotopy theory of dynamic realisations of (M,R)-systems [20] based on dynamic realisations in a homotopy category, in a manner broadly similar to the development of the current Homotopy Theory for groupoids [12]-[13], including concepts such as the fundamental groupoid of a dynamic state space generated by any dynamic realisation of a simple (M,R)- system. Such dynamic realisations of (M,R)-systems can thus lead to higher homotopy and a Higher Dimensional Algebra of extended, or generalised (M,R)- systems that are endowed with dynamic, topological structures.

On the other hand, generalised (M,R)-systems, or GMRs, can be constructed functorially by employing the Yoneda Lemma, as shown in refs.[4]-[5]; GMRs are no longer restricted to sets, and can be also endowed with structure, such as those possesed by quantum groupoids or quantum automata. It follows then immediately that, unless the structure of GMRs is restricted to that of quantum groupoids or quantum automata, the categories of quantum automata or quantum groupoids can be either isomorphic or equivalentMathworldPlanetmathPlanetmathPlanetmath only to a subcategory of the GMR category, CGMR, and not to the category of all GMRs. A ‘no-go’ conjecture is then here proposed:

Theorem 5.2.

No-Go Conjecture for Recursive Computation of Generalised (M,R)–Systems. The high level of complexity of generalised (M,R)–Systems [5], [20] that represent functional (living) organisms in non-commutative modelling encoding diagrams [6],[10] prevents their completePlanetmathPlanetmathPlanetmathPlanetmathPlanetmathPlanetmath computability via recursive programming functions or algorithmsMathworldPlanetmath by either standard or quantum automata which require commutative encoding computation diagrams [9]– [10],[14].

The concepts of quantum automata and quantum computation were initially studied, and are also currently further investigated, in the contexts of quantum genetics, genetic networks with nonlinear dynamics, and bioinformatics. In a previous publication [2]– after introducing the formal concept of quantum automaton–the possible implications of this concept for correctly modeling genetic and metabolic activities in functional (living) cells and organisms were also considered. This was followed by a formal report on quantum and abstract, symbolic computationMathworldPlanetmath based on the theory of categories, functors and natural transformations [3]. The notions of topological semigroup, quantum automaton, or quantum computer, were then suggested with a view to their potential applications to the analogous simulation of biological systems, and especially genetic activities and nonlinear dynamics in genetic networks [6]–[7].

Further, detailed studies of nonlinear dynamics in genetic networks were carried out in categories of n-valued, Łukasiewicz Logic Algebras that showed significant dissimilarities [6] from the widespread Boolean models of human neural networks that may have begun with the early publication of [18]. Molecular models in terms of categories, functors and natural transformations were then formulated for uni-molecular chemical transformations, multi-molecular chemical and biochemical transformations [7]. Previous applications of computer modeling, classical automata theory, and relational biology to molecular biology, oncogenesis and medicine were extensively reviewed in a monograph [7], and several important conclusions were reached regarding both the potential and the limitations of computation-assisted modeling of biological systems, especially those concerned with very complex organisms such as Homo sapiens sapiens [7]– [10]. Computer modeling and recursive computation models are thus often restricted only to compactPlanetmathPlanetmath subsystems (see also the following Compactness Lemma 1) of complex living organisms that are represented by GMRs [4]- [5],[7].

Novel approaches to solving the realisation problems of Relational Biology models in Complex Systems Biology were introduced in terms of natural transformations between functors of such molecular categories. Several applications of such natural transformations of functors were then presented to protein biosynthesis, embryogenesis and nuclear transplant experiments. Other possible realisations in Molecular Biology and Relational Biology of organisms were then suggested in terms of quantum automata models in Quantum Genetics and Cellular Interactomics. Future developments of this novel approach are likely to also include: fuzzy relations in Biology and Epigenomics, Relational Biology modeling of complex immunological and hormonal regulatory systems, n-categories and generalised LM–Topoi of Łukasiewicz Logic Algebras and intuitionistic logicMathworldPlanetmath (Heyting) algebras for modeling nonlinear dynamics and cognitive processes in complex neural networks that are present in the human brain, as well as stochastic modeling of genetic networks in Łukasiewicz Logic Algebras (LLAs).

A special case of compact subsystems of a GMR representing some component of an organism, such as the skeletonPlanetmathPlanetmath, may however escape the interdiction imposed by the ‘no-go’ Conjecture 2. Such compact objects of a GMR–in the sense of category theory– form either an additive or an Abelian category 𝒜 to which the following compactness lemma applies.

Lemma 5.1.

An object X in an Abelian category A with arbitrary direct sums (also called coproducts) is compact if and only if the functor homA(X,-) commutes with arbitrary direct sums, that is, if

(5.1) hom𝒜(X,αSYα)=αShom𝒜(X,Yα).

(Compactness Lemma from ref. [21]).

6. Conclusions

Non-distributive varietiesMathworldPlanetmathPlanetmath of many-valued, LM-logic algebras that are also noncommutative open new possibilities for formal treatments of both complex quantum systems and highly complex biological networks, such as genetic nets, metabolic-replication systems (see for example refs. [19]–[20] and [22]), the interactome [6] and neural networks [7]. This novel approach that involves both Algebraic Logic and Category Theory, provides an important framework for understanding the complexity inherent in intelligent systems and their flexible, adaptive behaviors. A consequence of the Logical Adjointness Theorem– which defines categorically the natural equivalence between the category of centered LM-logic algebras and that of Boolean logic algebras– is that one may be able to define Artificial Intelligence analogs of neural networks based on centered LM-logic algebras. In this process, higher dimensional algebra (HDA; [12]-[13]) and categorical models of human brain dynamics (refs. [8]–[11]) were predicted to play a central role. These new approaches are also relevant for resolving the tug-of-war between nature-vs.-nurture theories of human development and the ‘natural’ emergence through co-evolution of intelligence in the first H. sapiens sapiens societies.


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Title Lukasiewicz-Moisil Many-Valued Logic Algebra of Highly-Complex Systems vs the Q-logics of Quantum Automata and Chryssippian Logic
Canonical name LukasiewiczMoisilManyValuedLogicAlgebraOfHighlyComplexSystemsVsTheQlogicsOfQuantumAutomataAndChryssippianLogic
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