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15
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Find a function f : B → C such that h = f ∘ g

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#relations
103
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ordering relation $x\,\,|\, \,y \,⊆\, N\,×\,N\,$ over natural numbers $N$

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#relations #lattice-orders
672
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Number of distinct Relations

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#combinatorics #functions #relations
69
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give a first-order formula with no free variables that is true iff a relation is a partial order

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#logic #computer-science #relations #first-order-logic #logic-translation
111
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understanding proof by contradiction with example

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#proof-writing #relations
75
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Equivalence relations

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#relations #equivalence-relations
55
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Find transitive sub-relations of a non-transitive relation

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#relation-algebra #relations
309
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Which of the following sets is bijection to set of Integers?

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#functions #elementary-set-theory #relations
8k
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How many relations are there on the set $\{a, b, c, d\}$ that contain the pair $(a, a)$?

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#relations
78
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Proof of Bijection

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#functions #relations
57
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Is it a Transitive Relationship

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#functions #relations #equivalence-relations
31
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Using transitive to prove symmetric

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#relations
143
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Find $S\circ R$ for some given relations $S$ and $R$

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#discrete-mathematics #relations
1.2k
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What are the possible relations on this set?

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#combinatorics #functions #elementary-set-theory #relations #equivalence-relations
141
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Prove that $T \circ (S \circ R) = (T \circ S) \circ R$

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#discrete-mathematics #proof-writing #relations

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