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commutativity

   Also found in: Legal, Encyclopedia, Wikipedia 0.01 sec.
com·mu·ta·tive  (kmy-ttv, k-myt-tv)
adj.
1. Relating to, involving, or characterized by substitution, interchange, or exchange.
2. Independent of order. Used of a logical or mathematical operation that combines objects or sets of objects two at a time. If a × b = b × a, the operation indicated by × is commutative.

com·muta·tivi·ty (k-myt-tv-t) n.


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s-1)]) (4) In [4] the problem of lowering the order of input derivative in the generalized state equation was studied for the general case, and the result was formulated in terms of the commutativity of certain vector fields.
Using these coincidence theorems, we obtain a few fixed point theorems, wherein continuity of maps is not needed, completeness of the space is relaxed to the completeness of a subspace, and the commutativity requirement is tight and minimal.
A term (and/or tree) is a simple tautology if up to commutativity and associativity it is equal to x [disjunction] [bar.
 
 
 
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