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10 Cards in this Set
- Front
- Back
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relation |
subset of AxB. if (a,b) is an element than a related to b |
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inverse |
all (b,a) for which (a,b) was part of the relation |
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domain |
set of all elements of A that are related to some element in B |
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range |
set of all elements in B that have some A element related to them |
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reflexive |
if x~x for all x in A |
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symmetric |
if x~y, then y~x |
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transitive |
if x~y and y~z then x~z |
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partition |
collection of sets, pairwise disjoint, that comprise an entire set A |
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equivalence class |
any a in A [a] consists of all elements related to a |
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function |
sebset of AxB s.t for every a there exists a unique b. f(a)=b |
