Question

Compare intersections between lists of set and its partition

score 27 · Answer 1 · 2026-04-11 22:51:29

27

Views

Compare intersections between lists of set and its partition

Published on 11 Apr 2026 - 22:51

score 102 · Answer 2 · 2026-04-14 13:25:46

102

Views

Suppose that $Z \subseteq Y \subseteq X$ and that $f:X \to Z$ is bijective, then there exists a bijection $g : X \to Y$

Published on 14 Apr 2026 - 13:25

score 363 · Answer 3 · 2026-04-14 10:32:43

363

Views

$2n+1$ Subsets whose cardinality is a multiples of 6

Published on 14 Apr 2026 - 10:32

score 44 · Answer 4 · 2026-03-26 13:43:51

44

Views

R is a relation over P(S): R = {(C, D) ∈ P (S)^{2} : C ∩ E = D ∩ E} is R an Equivalence relation?

Published on 26 Mar 2026 - 13:43

score 1k · Answer 5 · 2026-04-11 12:31:03

1k

Views

How to proof inverse function of unions are equal to union of inverse functions.

Published on 11 Apr 2026 - 12:31

score 86 · Answer 6 · 2026-04-13 06:52:56

86

Views

Writing a set in the form of intersection of two sets

Published on 13 Apr 2026 - 6:52

score 5.4k · Answer 7 · 2026-04-10 12:56:25

5.4k

Views

How many injective and surjective functions are there from $A$ to $B$?

Published on 10 Apr 2026 - 12:56

score 44 · Answer 8 · 2026-04-11 06:53:06

44

Views

How do I find the bijection from this powerset?

Published on 11 Apr 2026 - 6:53

score 553 · Answer 9 · 2026-04-09 12:40:28

553

Views

What are all underlying assumptions in the definition of Cartesian Product in Naive Set Theory?

Published on 09 Apr 2026 - 12:40

score 116 · Answer 10 · 2026-04-14 15:34:32

116

Views

For each of the following formulae ϕ(x), show why the set {x : ϕ(x)} does or does not exist:

Published on 14 Apr 2026 - 15:34

score 61 · Answer 11 · 2026-04-01 01:02:49

61

Views

Equivalence Relations of pairs

Published on 01 Apr 2026 - 1:02

score 60 · Answer 12 · 2026-04-14 13:15:05

60

Views

Notation confusion: Sequence of sets

Published on 14 Apr 2026 - 13:15

score 131 · Answer 13 · 2026-04-10 21:43:01

131

Views

Set Theory: Conventions Dealing with Quantifiers and Set Builder

Published on 10 Apr 2026 - 21:43

score 21 · Answer 14 · 2026-04-14 08:12:52

21

Views

Question regarding maximum of a set

Published on 14 Apr 2026 - 8:12

score 77 · Answer 15 · 2026-04-13 14:44:26

77

Views

Prove if $f:X\rightarrow Y$ is surjective then $|X|\ge|Y|$

Published on 13 Apr 2026 - 14:44

List Question

Compare intersections between lists of set and its partition

Suppose that $Z \subseteq Y \subseteq X$ and that $f:X \to Z$ is bijective, then there exists a bijection $g : X \to Y$

$2n+1$ Subsets whose cardinality is a multiples of 6

R is a relation over P(S): R = {(C, D) ∈ P (S)^{2} : C ∩ E = D ∩ E} is R an Equivalence relation?

How to proof inverse function of unions are equal to union of inverse functions.

Writing a set in the form of intersection of two sets

How many injective and surjective functions are there from $A$ to $B$?

How do I find the bijection from this powerset?

What are all underlying assumptions in the definition of Cartesian Product in Naive Set Theory?

For each of the following formulae ϕ(x), show why the set {x : ϕ(x)} does or does not exist:

Equivalence Relations of pairs

Notation confusion: Sequence of sets

Set Theory: Conventions Dealing with Quantifiers and Set Builder

Question regarding maximum of a set

Prove if $f:X\rightarrow Y$ is surjective then $|X|\ge|Y|$

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