Question

element in longest chain and longest antichain

score 206 · Answer 1 · 2026-04-13 19:02:16

206

Views

element in longest chain and longest antichain

Published on 13 Apr 2026 - 19:02

score 56 · Answer 2 · 2026-04-10 16:31:05

56

Views

Some question about lattice rank.

Published on 10 Apr 2026 - 16:31

score 93 · Answer 3 · 2026-04-16 22:06:41

93

Views

Universally embedding total order = $\eta_\xi$ set?

Published on 16 Apr 2026 - 22:06

score 42 · Answer 4 · 2026-04-10 04:08:53

42

Views

How to prove that a surjection from a dense set to another dense set extends to a surjection?

Published on 10 Apr 2026 - 4:08

score 157 · Answer 5 · 2026-04-17 07:42:08

157

Views

prove that $(0,1)\cap \mathbb{Q}$ is order-isomorphic to $(-\pi,\pi)\cap \mathbb{Q}$

Published on 17 Apr 2026 - 7:42

score 189 · Answer 6 · 2026-04-21 21:40:19

189

Views

Cardinality of the set of strict total orders on $\mathbb{R}$

Published on 21 Apr 2026 - 21:40

score 52 · Answer 7 · 2026-04-14 04:52:21

52

Views

Question about $\omega$-categoricity

Published on 14 Apr 2026 - 4:52

score 88 · Answer 8 · 2026-04-13 15:13:04

88

Views

Completeness of a theory that is not $\omega$-categorical

Published on 13 Apr 2026 - 15:13

score 53 · Answer 9 · 2026-04-13 16:03:29

53

Views

Can lattices which are also linear orders be characterized equationally?

Published on 13 Apr 2026 - 16:03

score 122 · Answer 10 · 2026-04-13 16:49:58

122

Views

Are all incomparable elements in a set considered both maximal and minimal?

Published on 13 Apr 2026 - 16:49

score 320 · Answer 11 · 2026-04-13 20:18:20

320

Views

What is an example of a nonempty subset of $\mathbb{R}$ that is bounded above that does not contain its least upper bound?

Published on 13 Apr 2026 - 20:18

score 77 · Answer 12 · 2026-04-14 08:52:52

77

Views

The proof of Lemma 10.1 in Nik’s book about forcing

Published on 14 Apr 2026 - 8:52

score 96 · Answer 13 · 2026-04-13 15:36:31

96

Views

A complete partially ordered set.

Published on 13 Apr 2026 - 15:36

score 99 · Answer 14 · 2026-04-12 11:08:36

99

Views

Show that the definition of Scott topology is a topology

Published on 12 Apr 2026 - 11:08

score 68 · Answer 15 · 2026-04-13 07:32:58

68

Views

Show that a circular relation is not a partial ordering

Published on 13 Apr 2026 - 7:32

List Question

element in longest chain and longest antichain

Some question about lattice rank.

Universally embedding total order = $\eta_\xi$ set?

How to prove that a surjection from a dense set to another dense set extends to a surjection?

prove that $(0,1)\cap \mathbb{Q}$ is order-isomorphic to $(-\pi,\pi)\cap \mathbb{Q}$

Cardinality of the set of strict total orders on $\mathbb{R}$

Question about $\omega$-categoricity

Completeness of a theory that is not $\omega$-categorical

Can lattices which are also linear orders be characterized equationally?

Are all incomparable elements in a set considered both maximal and minimal?

What is an example of a nonempty subset of $\mathbb{R}$ that is bounded above that does not contain its least upper bound?

The proof of Lemma 10.1 in Nik’s book about forcing

A complete partially ordered set.

Show that the definition of Scott topology is a topology

Show that a circular relation is not a partial ordering

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