excluded middle


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excluded middle

n
(Logic) logic the principle that every proposition is either true or false, so that there is no third truth-value and no statements lack truth-value
References in periodicals archive ?
Their topics include proof-oriented categorical semantics, the continuum hypothesis implies excluded middle, non-deterministic inductive definitions and fullness, relating quotient completion via categorical logic, Hilbert's program and ordinal analysis, and Aristotle's deductive logic: a proof-theoretical study.
The people who clamor for the approval of the BBL in the name of peace commit the fallacy of the excluded middle.
So measurement, if real, does take Quantum Mechanics from something that does not obey the law of the excluded middle to something that does obey the law of the excluded middle.
The classical logic is based on three axioms: the axiom of identity which states that "A is A"; the axiom of noncontradiction which states that "A is not non-A"; and the axiom of the excluded middle which states that no third term "T" exists which is simultaneously "A" and "non-A" (Nicolescu, 2005, p.
For instance, the quantum superposition principle is contrary to the Aristotelian law of the excluded middle, since one can superpose two states with opposite properties (e.
Thus, in contrast to naive dialecticism of the East, Western dialectical thinking emphasizes three different laws: the law of identity, the law of contradiction, and the law of the excluded middle (Peng & Nisbett, 1999).
Our setting is Bishop's constructive mathematics ([3], [4], [5], [6], [8] and [15]), mathematics developed with Constructive logic (or Intuitionistic logic) - logic without the Law of Excluded Middle P [disjunction][logical not]P.
Where Meinong believed that if we can say true things about beingless objects, such as "Sherlock Holmes is a detective," than they must be genuine objects worthy of scientific study, Russell counter-argued that acknowledging "facts" about nonexistent objects violated key logic principles, specifically the law of non-contradiction and the law of the excluded middle.
It provides a charitable interpretation of our ordinary talk about the future, and allows us to retain a principle of bivalence for propositions and to retain the law of excluded middle in the logic of propositions about the future.
In sum, the Asante have formed within their traditions the habit of trying to set out the principles of reasoning among which non-contradiction and excluded middle are of a very basic importance, in the manner of a system (as in logic); nor consequently, have they tended to investigate the assortment of theoretical questions that arise in such an enterprise (as in the philosophy of logic).
Breaking down the power of Aristotle's terrifying Law of the Excluded Middle, magical realism means the restoration of the literary middle and its liminal grounds.
By virtue of particular authors' status, bold assertions, and effective pedagogical techniques, the participating fuzzy logicians mostly came to agree that Elkan's proof illegitimately used the law of the excluded middle (either A or not-A is true), which does not apply within fuzzy logic.