Question

Compute $\bigcap \{\alpha:\alpha\mbox{ is an ordinal}\}$

score 45 · Answer 1 · 2026-03-25 17:26:13

45

Views

Compute $\bigcap \{\alpha:\alpha\mbox{ is an ordinal}\}$

Published on 25 Mar 2026 - 17:26

score 295 · Answer 2 · 2026-03-26 15:04:20

295

Views

How to show equality $A = (A\setminus B) \cup (A\setminus C) \cup (A \cap B \cap C)$

Published on 26 Mar 2026 - 15:04

score 65 · Answer 3 · 2026-03-26 16:05:20

65

Views

Show $\left(\bigcup\limits_{i=1}^{\infty} A_{i}\right) \cap B = \bigcup\limits_{i=1}^{\infty} (A_{i}\cap B)$

Published on 26 Mar 2026 - 16:05

score 66 · Answer 4 · 2026-03-26 08:53:50

66

Views

How can I formally prove this obvious surjection?

Published on 26 Mar 2026 - 8:53

score 98 · Answer 5 · 2026-03-25 20:19:34

98

Views

proof verification - A. Shen, A set contains $2n$ elements, select $k$ subsets that none is a subset of others

Published on 25 Mar 2026 - 20:19

score 40 · Answer 6 · 2026-04-09 05:31:58

40

Views

How to I correctly specify the following set of sets of edges of a graph

Published on 09 Apr 2026 - 5:31

score 549 · Answer 7 · 2026-03-28 22:29:53

549

Views

Use the Archimedean Property to Prove the Value of the Infimum of a Set

Published on 28 Mar 2026 - 22:29

score 17 · Answer 8 · 2026-03-25 20:40:31

17

Views

Existence of Indexing Functions with Certain Properties

Published on 25 Mar 2026 - 20:40

score 118 · Answer 9 · 2026-03-26 00:12:12

118

Views

Notation of the Domain of a Multivariate Function

Published on 26 Mar 2026 - 0:12

score 45 · Answer 10 · 2026-03-26 06:07:17

45

Views

Prove or disprove one proof of a book about ordinals

Published on 26 Mar 2026 - 6:07

score 786 · Answer 11 · 2026-03-26 15:52:10

786

Views

Need explanation of Sigma Continuity.

Published on 26 Mar 2026 - 15:52

score 112 · Answer 12 · 2026-04-10 04:16:59

112

Views

In what way is a partial function different from a partial transformation when both can always express the other's associated total function?

Published on 10 Apr 2026 - 4:16

score 197 · Answer 13 · 2026-03-25 19:56:14

197

Views

The correct way to use set builder notation of this set?

Published on 25 Mar 2026 - 19:56

score 87 · Answer 14 · 2026-03-25 19:11:59

87

Views

Existence of a sequence $(x_{1},...)$ such that $x_{n+1} \in G(x_{n})$ where $G$ is a nonempty correspondence

Published on 25 Mar 2026 - 19:11

score 102 · Answer 15 · 2026-03-26 05:01:14

102

Views

Build Bijection Function with Parameters

Published on 26 Mar 2026 - 5:01

List Question

Compute $\bigcap \{\alpha:\alpha\mbox{ is an ordinal}\}$

How to show equality $A = (A\setminus B) \cup (A\setminus C) \cup (A \cap B \cap C)$

Show $\left(\bigcup\limits_{i=1}^{\infty} A_{i}\right) \cap B = \bigcup\limits_{i=1}^{\infty} (A_{i}\cap B)$

How can I formally prove this obvious surjection?

proof verification - A. Shen, A set contains $2n$ elements, select $k$ subsets that none is a subset of others

How to I correctly specify the following set of sets of edges of a graph

Use the Archimedean Property to Prove the Value of the Infimum of a Set

Existence of Indexing Functions with Certain Properties

Notation of the Domain of a Multivariate Function

Prove or disprove one proof of a book about ordinals

Need explanation of Sigma Continuity.

In what way is a partial function different from a partial transformation when both can always express the other's associated total function?

The correct way to use set builder notation of this set?

Existence of a sequence $(x_{1},...)$ such that $x_{n+1} \in G(x_{n})$ where $G$ is a nonempty correspondence

Build Bijection Function with Parameters

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