Question

Drawing Hasse diagram

score 85 · Answer 1 · 2026-04-12 20:52:50

85

Views

Drawing Hasse diagram

Published on 12 Apr 2026 - 20:52

score 484 · Answer 2 · 2026-04-09 23:48:36

484

Views

Compact set in the order topology

Published on 09 Apr 2026 - 23:48

score 128 · Answer 3 · 2026-04-15 10:58:14

128

Views

Order the basis of a Lie algebra so that multiplication is increasing?

Published on 15 Apr 2026 - 10:58

score 50 · Answer 4 · 2026-04-16 06:21:01

50

Views

Is the set of upper bounds squared either empty or a singleton?

Published on 16 Apr 2026 - 6:21

score 22 · Answer 5 · 2026-04-16 07:32:29

22

Views

If X is a totally order set with the order topology, show that Cl((a,b))$\subset[a,b]$

Published on 16 Apr 2026 - 7:32

score 78 · Answer 6 · 2026-04-12 07:47:46

78

Views

proof about partial order

Published on 12 Apr 2026 - 7:47

score 42 · Answer 7 · 2026-04-15 17:20:40

42

Views

Is there anyone defining asymptotic dominance so that $f \precsim g \text{ and } f \succsim g \implies f \sim g$?

Published on 15 Apr 2026 - 17:20

score 581 · Answer 8 · 2026-04-14 18:49:36

581

Views

Order type of strings under lexicographical order

Published on 14 Apr 2026 - 18:49

score 218 · Answer 9 · 2026-04-13 15:11:56

218

Views

combining two partial order relations

Published on 13 Apr 2026 - 15:11

score 68 · Answer 10 · 2026-04-13 23:43:45

Why <HF,⊆> is simply isomorphic to the lattice of finite subsets of a countable set, such as the collection of finite subsets of N under inclusion.

score 254 · Answer 11 · 2026-04-12 22:09:10

254

Views

ordinal spaces and order topology

Published on 12 Apr 2026 - 22:09

score 147 · Answer 12 · 2026-04-14 00:34:59

147

Views

using diagonal argument to show existence of uncountable antichain

Published on 14 Apr 2026 - 0:34

score 80 · Answer 13 · 2026-04-15 08:58:57

80

Views

What does "$A \leq B : \Longleftrightarrow A \subseteq B$ is an order relation of $\mathcal{P}(N)$" mean?

Published on 15 Apr 2026 - 8:58

score 43 · Answer 14 · 2026-04-16 06:06:23

43

Views

Term for a subset $B$ of poset $A$ such that $\forall b \in B,\forall a\in A: a<b\Rightarrow a\in B$

Published on 16 Apr 2026 - 6:06

score 194 · Answer 15 · 2026-03-25 09:27:21

194

Views

Image of sup/inf under Galois connection between lattices

Published on 25 Mar 2026 - 9:27

List Question

Drawing Hasse diagram

Compact set in the order topology

Order the basis of a Lie algebra so that multiplication is increasing?

Is the set of upper bounds squared either empty or a singleton?

If X is a totally order set with the order topology, show that Cl((a,b))$\subset[a,b]$

proof about partial order

Is there anyone defining asymptotic dominance so that $f \precsim g \text{ and } f \succsim g \implies f \sim g$?

Order type of strings under lexicographical order

combining two partial order relations

Why <HF,⊆> is simply isomorphic to the lattice of finite subsets of a countable set, such as the collection of finite subsets of N under inclusion.

ordinal spaces and order topology

using diagonal argument to show existence of uncountable antichain

What does "$A \leq B : \Longleftrightarrow A \subseteq B$ is an order relation of $\mathcal{P}(N)$" mean?

Term for a subset $B$ of poset $A$ such that $\forall b \in B,\forall a\in A: a<b\Rightarrow a\in B$

Image of sup/inf under Galois connection between lattices

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