List questions from equivalence-relations

Published on 27 Mar 2026 - 7:35

52

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Do equivalence relations work in the "not" case?

Published on 14 Sep 2016 - 9:05

29

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Help with a problem involving relations and functions

Published on 25 Mar 2026 - 20:41

93

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When we do really need the axiom of choice

Published on 01 Apr 2026 - 8:54

327

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Describing the equivalence classes (x, y)R geometrically.

Published on 17 Sep 2016 - 4:34

193

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Showing equivalence relation and class for a square

Published on 18 Sep 2016 - 7:12

61

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Find the languages that can represent the equivalence classes

Published on 27 Mar 2026 - 18:48

129

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Unique equivalence class confusion

Published on 20 Sep 2016 - 3:52

48

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What's the proper term for a "scale-equivariant" function

Published on 24 Sep 2016 - 15:42

226

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What does this equation mean (approx with subscript)?

Published on 27 Sep 2016 - 6:25

38

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$D(x, y) = d (x, y) + \mid \frac{1}{d(x, A^c)} - \frac{1}{d(y, A^c)}\mid$. Then show that $D$ and $d$ are equivalent on $A$.

Published on 27 Sep 2016 - 11:11

1.1k

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Determine if R is an equivalence relation on set A. A=RxR. (a,b) R (c,d) iff a=c or b=d.

Published on 28 Sep 2016 - 18:02

293

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Is $x \sim y$ iff $y - x \in \mathbb Q$ an equivalence relation?

Published on 01 Oct 2016 - 10:38

97

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Proving that a set relation is an equivalence relation

Published on 03 Oct 2016 - 12:59

44

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Show that there is at most one prime in any $R$-class.

Published on 03 Oct 2016 - 15:06

List Question

Bijection between equivalence relations on a set A and the set of partitions on set A

Do equivalence relations work in the "not" case?

Help with a problem involving relations and functions

When we do really need the axiom of choice

Describing the equivalence classes (x, y)R geometrically.

Showing equivalence relation and class for a square

Find the languages that can represent the equivalence classes

Unique equivalence class confusion

What's the proper term for a "scale-equivariant" function

What does this equation mean (approx with subscript)?

$D(x, y) = d (x, y) + \mid \frac{1}{d(x, A^c)} - \frac{1}{d(y, A^c)}\mid$. Then show that $D$ and $d$ are equivalent on $A$.

Determine if R is an equivalence relation on set A. A=RxR. (a,b) R (c,d) iff a=c or b=d.

Is $x \sim y$ iff $y - x \in \mathbb Q$ an equivalence relation?

Proving that a set relation is an equivalence relation

Show that there is at most one prime in any $R$-class.

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