universe of discourse

field Field limit Limit object Object objects Objects

Boole (1854) defines universe of discourse in the following manner:

In every discourse, whether of the mind conversing with its own thoughts, or of the individual in his intercourse with others, there is an assumed or expressed limit within which the subjects of its operation are confined. $\mathrm{\dots }$ Now, whatever may be the extent of the field within which all the objects of our discourse are found, that field may properly be termed the universe of discourse. (Boole 1854/1958, p. 42).

1 References

• Boole, George (1854/1958), An Investigation of the Laws of Thought on Which are Founded the Mathematical Theories of Logic and Probabilities, Macmillan Publishers, 1854. Reprinted with corrections, Dover Publications, New York, NY, 1958.

2 External links

• http://www.helsinki.fi/science/commens/dictionary.htmlCommens Dictionary of Peirce’s Terms:

  http://www.helsinki.fi/science/commens/terms/logicaluniv.htmlLogical Universe.
  http://www.helsinki.fi/science/commens/terms/universedisc.htmlUniverse of Discourse.
  Peirce attributes the term “universe of discourse” to De Morgan (1846).

Title	universe of discourse
Canonical name	UniverseOfDiscourse
Date of creation	2013-03-22 17:54:31
Last modified on	2013-03-22 17:54:31
Owner	Jon Awbrey (15246)
Last modified by	Jon Awbrey (15246)
Numerical id	7
Author	Jon Awbrey (15246)
Entry type	Definition
Classification	msc 03B48
Classification	msc 03B05
Classification	msc 03A05
Classification	msc 03G05
Synonym	universe