Question

Find two pairs where neither is the case ⟨x1,y1⟩⪯⟨x2,y2⟩, ⟨x1,y1⟩⪰⟨x2,y2⟩.

score 236 · Answer 1 · 2018-11-19 20:34:21

236

Views

Find two pairs where neither is the case ⟨x1,y1⟩⪯⟨x2,y2⟩, ⟨x1,y1⟩⪰⟨x2,y2⟩.

Published on 19 Nov 2018 - 20:34

score 76 · Answer 2 · 2026-03-25 05:47:15

76

Views

Is the down-closure of a sub-dcpo a sub-dcpo?

Published on 25 Mar 2026 - 5:47

score 49 · Answer 3 · 2018-11-22 16:44:55

Existence of a countable family of pairwise non-similar partial orders with $2^c$ maximal elements, and no minimal elements

score 72 · Answer 4 · 2018-11-23 08:22:39

Proving partial orders in set theory for $(x_1,y_1 )≤(x_2,y_2 )⇔〖(x〗_1 ≤_X x_2$ and $x_2 ≰_X x_1)$ or $(x_1 =_X x_2$ and $y_1 ≤_Y y_2)$

score 180 · Answer 5 · 2018-11-24 10:19:14

180

Views

Lower bound of $e(P)$, the amount of linear extensions of a poset $P$ of cardinality $n$

Published on 24 Nov 2018 - 10:19

score 198 · Answer 6 · 2018-11-24 15:37:28

198

Views

A Banach space with a cone's order

Published on 24 Nov 2018 - 15:37

score 152 · Answer 7 · 2026-03-25 17:20:53

152

Views

What is the smallest nontrivial poset with trivial automorphism group?

Published on 25 Mar 2026 - 17:20

score 888 · Answer 8 · 2018-11-25 21:36:08

888

Views

prove that every finite poset can be embedded into $( \mathbb{N}, |)$

Published on 25 Nov 2018 - 21:36

score 27 · Answer 9 · 2018-11-25 23:42:50

27

Views

Identity in Lattices

Published on 25 Nov 2018 - 23:42

score 23 · Answer 10 · 2018-11-26 01:14:00

23

Views

Show that $χ_G(i − 1) = 0$

Published on 26 Nov 2018 - 1:14

score 51 · Answer 11 · 2026-03-26 14:31:53

51

Views

Question about set order theory

Published on 26 Mar 2026 - 14:31

score 38 · Answer 12 · 2018-11-26 12:08:50

38

Views

What does it mean for a linear order to be dense or without endpoint?

Published on 26 Nov 2018 - 12:08

score 32 · Answer 13 · 2018-11-26 12:27:38

32

Views

Partialy ordered set

Published on 26 Nov 2018 - 12:27

score 58 · Answer 14 · 2018-11-26 13:32:14

58

Views

Can we define a preordered set from a slice category of locally small categories?

Published on 26 Nov 2018 - 13:32

score 645 · Answer 15 · 2026-03-25 09:07:25

645

Views

must a measure-preserving and order-preserving bijection have measurable inverse?

Published on 25 Mar 2026 - 9:07

List Question

Find two pairs where neither is the case ⟨x1,y1⟩⪯⟨x2,y2⟩, ⟨x1,y1⟩⪰⟨x2,y2⟩.

Is the down-closure of a sub-dcpo a sub-dcpo?

Existence of a countable family of pairwise non-similar partial orders with $2^c$ maximal elements, and no minimal elements

Proving partial orders in set theory for $(x_1,y_1 )≤(x_2,y_2 )⇔〖(x〗_1 ≤_X x_2$ and $x_2 ≰_X x_1)$ or $(x_1 =_X x_2$ and $y_1 ≤_Y y_2)$

Lower bound of $e(P)$, the amount of linear extensions of a poset $P$ of cardinality $n$

A Banach space with a cone's order

What is the smallest nontrivial poset with trivial automorphism group?

prove that every finite poset can be embedded into $( \mathbb{N}, |)$

Identity in Lattices

Show that $χ_G(i − 1) = 0$

Question about set order theory

What does it mean for a linear order to be dense or without endpoint?

Partialy ordered set

Can we define a preordered set from a slice category of locally small categories?

must a measure-preserving and order-preserving bijection have measurable inverse?

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