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A propositional formula is a DNF formula, meaning Disjunctive Normal Form, if it is a disjunction of conjunctions of literals (a literal is a propositional variable or its negation). Hence, a DNF is a formula of the form: $K_1 \vee K_2 \vee \ldots \vee K_n$ where each $K_i$ is of the form $l_{i1} \wedge l_{i2} \wedge \ldots \wedge l_{im}$ for literals $l_{ij}$ and some $m$ which can vary for each $K_i$
Example: $(x\wedge y \wedge \neg z) \vee (y\wedge \neg w \wedge \neg u) \vee (x \wedge v)$
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"DNF" is owned by rspuzio. [ owner history (1) ]
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Cross-references: negation, variable, literals, conjunctions, disjunction, formula
There are 3 references to this entry.
This is version 1 of DNF, born on 2004-03-09.
Object id is 5677, canonical name is DNF.
Accessed 4073 times total.
Classification:
| AMS MSC: | 03B05 (Mathematical logic and foundations :: General logic :: Classical propositional logic) |
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Pending Errata and Addenda
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