Question

Every group and ring is congruence-permutable , but not necessarily congruence-distributive

score 482 · Answer 1 · 2026-03-25 23:37:04

482

Views

Every group and ring is congruence-permutable , but not necessarily congruence-distributive

Published on 25 Mar 2026 - 23:37

score 821 · Answer 2 · 2013-01-25 08:54:15

821

Views

Represent the three element chain as a subdirect product of subdirectly irreducible lattices.

Published on 25 Jan 2013 - 8:54

score 1.8k · Answer 3 · 2013-01-26 05:42:59

1.8k

Views

Modus Ponens: implication versus entailment

Published on 26 Jan 2013 - 5:42

score 67 · Answer 4 · 2013-03-20 00:39:07

67

Views

Do cancellative semigroups form a variety of algebras?

Published on 20 Mar 2013 - 0:39

score 38 · Answer 5 · 2020-08-04 01:04:16

38

Views

Is the intersection of any collection of equational theories itself an equational theory?

Published on 04 Aug 2020 - 1:04

score 49 · Answer 6 · 2020-08-05 16:01:55

49

Views

How to derive this identity for cylindric algebras?

Published on 05 Aug 2020 - 16:01

score 59 · Answer 7 · 2020-08-08 19:05:45

59

Views

Is the class of anticommutative magmas a variety?

Published on 08 Aug 2020 - 19:05

score 352 · Answer 8 · 2020-08-09 00:26:09

352

Views

About the definition of the indexed set of a family

Published on 09 Aug 2020 - 0:26

score 93 · Answer 9 · 2020-08-09 17:03:22

93

Views

Axiomatizability of equational theories with no less than n equations.

Published on 09 Aug 2020 - 17:03

score 115 · Answer 10 · 2020-08-10 01:12:57

115

Views

Σ-algebras and it's subalgebras properties

Published on 10 Aug 2020 - 1:12

score 50 · Answer 11 · 2026-03-25 12:28:16

50

Views

Does $T(\Sigma,V)$, the set of terms for signature $\Sigma$ and a set $V$ of variables, belong to syntax or semantics?

Published on 25 Mar 2026 - 12:28

score 115 · Answer 12 · 2026-03-26 06:29:03

115

Views

Coalgebras of a free-forgetful adjunction

Published on 26 Mar 2026 - 6:29

score 401 · Answer 13 · 2020-08-31 17:09:07

401

Views

In a lattice which is a Boolean algebra an ideal is prime iff it is maximal

Published on 31 Aug 2020 - 17:09

score 54 · Answer 14 · 2020-09-08 14:25:23

54

Views

Are "quasi-injective homomorphisms" necessarily injective?

Published on 08 Sep 2020 - 14:25

score 187 · Answer 15 · 2020-09-13 13:06:23

187

Views

What is the name of this kind of algebra?

Published on 13 Sep 2020 - 13:06

List Question

Every group and ring is congruence-permutable , but not necessarily congruence-distributive

Represent the three element chain as a subdirect product of subdirectly irreducible lattices.

Modus Ponens: implication versus entailment

Do cancellative semigroups form a variety of algebras?

Is the intersection of any collection of equational theories itself an equational theory?

How to derive this identity for cylindric algebras?

Is the class of anticommutative magmas a variety?

About the definition of the indexed set of a family

Axiomatizability of equational theories with no less than n equations.

Σ-algebras and it's subalgebras properties

Does $T(\Sigma,V)$, the set of terms for signature $\Sigma$ and a set $V$ of variables, belong to syntax or semantics?

Coalgebras of a free-forgetful adjunction

In a lattice which is a Boolean algebra an ideal is prime iff it is maximal

Are "quasi-injective homomorphisms" necessarily injective?

What is the name of this kind of algebra?

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