Question

$\epsilon_0$ is closed under addition, multiplication, exponentiation of ordinals

score 168 · Answer 1 · 2026-04-02 11:39:11

168

Views

$\epsilon_0$ is closed under addition, multiplication, exponentiation of ordinals

Published on 02 Apr 2026 - 11:39

score 114 · Answer 2 · 2016-05-07 18:11:49

114

Views

If $(A, \preceq)$ is well quasi order, is $(A^\omega, \ll)$ well quasi order as well?

Published on 07 May 2016 - 18:11

score 1.4k · Answer 3 · 2026-04-01 00:27:24

1.4k

Views

When is a join semilattice not a meet semilattice?

Published on 01 Apr 2026 - 0:27

score 4.4k · Answer 4 · 2026-04-03 22:40:34

4.4k

Views

Why do people accept the axiom of choice given the well ordering principle?

Published on 03 Apr 2026 - 22:40

score 142 · Answer 5 · 2026-04-02 11:42:52

142

Views

How well-behaved can well-orders on $\mathbb{R}$ be?

Published on 02 Apr 2026 - 11:42

score 114 · Answer 6 · 2016-05-10 00:37:37

114

Views

Filters and antichains in preorders

Published on 10 May 2016 - 0:37

score 700 · Answer 7 · 2016-05-10 20:06:18

Given a partial order $R$ on the set $A$, prove that there exists a total order $\leq$ on $A$ such that $R \subseteq {\le}$

score 308 · Answer 8 · 2016-05-10 22:19:56

308

Views

Partially ordering finite graphs

Published on 10 May 2016 - 22:19

score 79 · Answer 9 · 2016-05-13 11:05:06

79

Views

Free cocompletion of thin categories

Published on 13 May 2016 - 11:05

score 43 · Answer 10 · 2016-05-13 16:56:38

43

Views

Higher order partial order

Published on 13 May 2016 - 16:56

score 172 · Answer 11 · 2016-05-18 18:34:26

172

Views

Adding relations to a partial order

Published on 18 May 2016 - 18:34

score 75 · Answer 12 · 2026-04-04 00:19:41

75

Views

A classification of the types of poset extensions that raise local-global principle is equivelent to the axiom of choice?

Published on 04 Apr 2026 - 0:19

score 177 · Answer 13 · 2026-04-02 13:22:34

177

Views

Order-preserving maps on a directed-complete poset

Published on 02 Apr 2026 - 13:22

score 297 · Answer 14 · 2016-05-20 15:27:58

297

Views

Is [a, a[ empty?

Published on 20 May 2016 - 15:27

score 155 · Answer 15 · 2026-02-23 04:28:18

155

Views

Is there any order isomorphic function between $\mathbb N \times \mathbb Z$ to $\mathbb Z \times \mathbb N$?

Published on 23 Feb 2026 - 4:28

List Question

$\epsilon_0$ is closed under addition, multiplication, exponentiation of ordinals

If $(A, \preceq)$ is well quasi order, is $(A^\omega, \ll)$ well quasi order as well?

When is a join semilattice not a meet semilattice?

Why do people accept the axiom of choice given the well ordering principle?

How well-behaved can well-orders on $\mathbb{R}$ be?

Filters and antichains in preorders

Given a partial order $R$ on the set $A$, prove that there exists a total order $\leq$ on $A$ such that $R \subseteq {\le}$

Partially ordering finite graphs

Free cocompletion of thin categories

Higher order partial order

Adding relations to a partial order

A classification of the types of poset extensions that raise local-global principle is equivelent to the axiom of choice?

Order-preserving maps on a directed-complete poset

Is [a, a[ empty?

Is there any order isomorphic function between $\mathbb N \times \mathbb Z$ to $\mathbb Z \times \mathbb N$?

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