Question

How to understand the meet in the lattice of partitions?

score 273 · Answer 1 · 2021-08-04 21:29:29

273

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How to understand the meet in the lattice of partitions?

Published on 04 Aug 2021 - 21:29

score 97 · Answer 2 · 2021-08-05 14:03:40

97

Views

Meet-semilattice is a semilattice

Published on 05 Aug 2021 - 14:03

score 99 · Answer 3 · 2026-03-26 02:56:09

99

Views

What is the definition of a congruence relation on an order-theoretic lattice?

Published on 26 Mar 2026 - 2:56

score 51 · Answer 4 · 2026-03-26 02:53:58

51

Views

Does a congruence relation on a complete lattice automatically also preserve the completeness property?

Published on 26 Mar 2026 - 2:53

score 25 · Answer 5 · 2021-08-07 16:04:49

25

Views

Any nonempty subset of a directed-complete partial order $(X,\leq)$ has a supremum if $X$ is a join-semilattice?

Published on 07 Aug 2021 - 16:04

score 183 · Answer 6 · 2021-08-08 09:08:37

183

Views

How to name a poset in which all nonempty subsets have a supremum?

Published on 08 Aug 2021 - 9:08

score 462 · Answer 7 · 2021-08-08 11:52:45

462

Views

Can you provide a symmetric presentation of this partition lattice?

Published on 08 Aug 2021 - 11:52

score 94 · Answer 8 · 2021-08-11 14:07:43

94

Views

A frame that is not completely distributive

Published on 11 Aug 2021 - 14:07

score 43 · Answer 9 · 2021-08-11 22:26:30

43

Views

Prove that in $S_7$ if $(a, b)$ is modular pair then $(b, a)$ is modular pair.

Published on 11 Aug 2021 - 22:26

score 320 · Answer 10 · 2021-08-19 10:44:09

320

Views

Why are complete lattices non-empty?

Published on 19 Aug 2021 - 10:44

score 86 · Answer 11 · 2021-08-19 17:30:29

86

Views

A reverse characterization of „property P can be checked on its finite subsets“

Published on 19 Aug 2021 - 17:30

score 178 · Answer 12 · 2021-08-26 15:31:11

178

Views

The number of monotonic Boolean functions of $n$ variables

Published on 26 Aug 2021 - 15:31

score 159 · Answer 13 · 2021-08-29 17:05:15

159

Views

Are these two definitions of lattice equivalent?

Published on 29 Aug 2021 - 17:05

score 432 · Answer 14 · 2021-08-29 20:50:30

432

Views

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

Published on 29 Aug 2021 - 20:50

score 61 · Answer 15 · 2021-08-31 02:18:54

61

Views

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

Published on 31 Aug 2021 - 2:18

List Question

How to understand the meet in the lattice of partitions?

Meet-semilattice is a semilattice

What is the definition of a congruence relation on an order-theoretic lattice?

Does a congruence relation on a complete lattice automatically also preserve the completeness property?

Any nonempty subset of a directed-complete partial order $(X,\leq)$ has a supremum if $X$ is a join-semilattice?

How to name a poset in which all nonempty subsets have a supremum?

Can you provide a symmetric presentation of this partition lattice?

A frame that is not completely distributive

Prove that in $S_7$ if $(a, b)$ is modular pair then $(b, a)$ is modular pair.

Why are complete lattices non-empty?

A reverse characterization of „property P can be checked on its finite subsets“

The number of monotonic Boolean functions of $n$ variables

Are these two definitions of lattice equivalent?

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

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