Question

Why could not we choose the first element as bottom?

score 131 · Answer 1 · 2026-04-12 20:27:24

131

Views

Why could not we choose the first element as bottom?

Published on 12 Apr 2026 - 20:27

score 146 · Answer 2 · 2026-04-16 16:42:34

146

Views

How many orders on the rational numbers are compatible with the field operations?

Published on 16 Apr 2026 - 16:42

score 435 · Answer 3 · 2026-04-13 08:48:38

435

Views

Distributive as a lattice if and only if distributive as a semilattice?

Published on 13 Apr 2026 - 8:48

score 64 · Answer 4 · 2026-04-15 07:03:27

64

Views

How to prove that the map $f_a(x)=(x\wedge a, x\vee a)$ is onto

Published on 15 Apr 2026 - 7:03

score 33 · Answer 5 · 2026-04-14 11:56:40

33

Views

Property of magnitude proof

Published on 14 Apr 2026 - 11:56

score 257 · Answer 6 · 2026-04-14 19:31:17

257

Views

Prove every permutation of the alphabet contains a subset of six letters in order

Published on 14 Apr 2026 - 19:31

score 285 · Answer 7 · 2026-04-12 00:02:27

285

Views

What is an example of an infinite tree with depth 3?

Published on 12 Apr 2026 - 0:02

score 100 · Answer 8 · 2026-04-16 00:35:44

100

Views

The set of Locales is a subset of the set of Toposes.

Published on 16 Apr 2026 - 0:35

score 186 · Answer 9 · 2026-04-16 14:18:45

$6.1$ LEMMA. If $\langle A,R \rangle $ is a well-ordering, then for all $x\in A, \langle A,R\rangle \ncong \langle \text{pred}(A,x,R),R\rangle .$

score 25 · Answer 10 · 2026-04-13 15:37:54

25

Views

obtaining an equivalence relation from an ordering relation

Published on 13 Apr 2026 - 15:37

score 175 · Answer 11 · 2026-04-13 22:02:34

175

Views

Show that the set of nonnegative numbers partially ordered by divisibility has a unique maximal element.

Published on 13 Apr 2026 - 22:02

score 46 · Answer 12 · 2026-04-15 17:29:04

46

Views

Real life example of S ≺ R if and only if Inv(S) ≺ R, here, S and R are roles, relations, or properties

Published on 15 Apr 2026 - 17:29

score 328 · Answer 13 · 2026-04-12 12:42:52

328

Views

Recurrence on partial orders

Published on 12 Apr 2026 - 12:42

score 62 · Answer 14 · 2026-04-12 07:48:41

62

Views

does this implication relation induced by a subset of the power set have a name?

Published on 12 Apr 2026 - 7:48

score 55 · Answer 15 · 2026-04-13 19:59:14

55

Views

If f is a biyective function then f inverse no necessarily preserve the order?

Published on 13 Apr 2026 - 19:59

List Question

Why could not we choose the first element as bottom?

How many orders on the rational numbers are compatible with the field operations?

Distributive as a lattice if and only if distributive as a semilattice?

How to prove that the map $f_a(x)=(x\wedge a, x\vee a)$ is onto

Property of magnitude proof

Prove every permutation of the alphabet contains a subset of six letters in order

What is an example of an infinite tree with depth 3?

The set of Locales is a subset of the set of Toposes.

$6.1$ LEMMA. If $\langle A,R \rangle $ is a well-ordering, then for all $x\in A, \langle A,R\rangle \ncong \langle \text{pred}(A,x,R),R\rangle .$

obtaining an equivalence relation from an ordering relation

Show that the set of nonnegative numbers partially ordered by divisibility has a unique maximal element.

Real life example of S ≺ R if and only if Inv(S) ≺ R, here, S and R are roles, relations, or properties

Recurrence on partial orders

does this implication relation induced by a subset of the power set have a name?

If f is a biyective function then f inverse no necessarily preserve the order?

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