Question

Two finitely based binary operations whose union is not finitely based, and vice versa

score 90 · Answer 1 · 2021-06-14 21:03:10

90

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Two finitely based binary operations whose union is not finitely based, and vice versa

Published on 14 Jun 2021 - 21:03

score 116 · Answer 2 · 2021-06-16 02:16:57

116

Views

What is the difference between $=$ and $\approx$ in universal algebra?

Published on 16 Jun 2021 - 2:16

score 237 · Answer 3 · 2021-06-17 19:25:35

237

Views

Clarify on Birkhoff's theorem (in universal algebra)

Published on 17 Jun 2021 - 19:25

score 34 · Answer 4 · 2021-06-19 20:51:00

34

Views

Subuniverses in an extended theory as a way of generalizing ring ideals and normal subgroups

Published on 19 Jun 2021 - 20:51

score 130 · Answer 5 · 2021-06-21 16:05:45

130

Views

Is there a generalization of universal algebra that can express multi-valued functions?

Published on 21 Jun 2021 - 16:05

score 515 · Answer 6 · 2026-03-28 11:26:57

515

Views

What theories are preserved under the product?

Published on 28 Mar 2026 - 11:26

score 115 · Answer 7 · 2026-03-28 09:33:33

115

Views

Free Lawvere theory on a signature

Published on 28 Mar 2026 - 9:33

score 43 · Answer 8 · 2026-03-29 04:10:52

43

Views

Colimits of Lawvere theories

Published on 29 Mar 2026 - 4:10

score 181 · Answer 9 · 2021-07-06 16:57:56

181

Views

Exercise with Birkhoff's theorem in universal algebra

Published on 06 Jul 2021 - 16:57

score 62 · Answer 10 · 2026-03-25 08:12:59

62

Views

First isomorphism theorem for inverse semigroups together with v-prehomomorphisms?

Published on 25 Mar 2026 - 8:12

score 44 · Answer 11 · 2021-07-23 12:41:02

44

Views

Equational identities of involutions

Published on 23 Jul 2021 - 12:41

score 98 · Answer 12 · 2021-07-23 16:31:19

In the language of two binary operations, is there a single identity that is equivalent to both distributive laws?

score 339 · Answer 13 · 2026-03-30 19:18:00

339

Views

Constructing the category $\mathbf{Grp}$ from the sets of group structures

Published on 30 Mar 2026 - 19:18

score 289 · Answer 14 · 2021-07-29 03:23:26

289

Views

Prove the lattice Idl(L) of ideals of a lattice L is algebraic

Published on 29 Jul 2021 - 3:23

score 52 · Answer 15 · 2021-08-08 12:28:19

52

Views

Apparent counterexample in the theorem that term functions form a clone.

Published on 08 Aug 2021 - 12:28

List Question

Two finitely based binary operations whose union is not finitely based, and vice versa

What is the difference between $=$ and $\approx$ in universal algebra?

Clarify on Birkhoff's theorem (in universal algebra)

Subuniverses in an extended theory as a way of generalizing ring ideals and normal subgroups

Is there a generalization of universal algebra that can express multi-valued functions?

What theories are preserved under the product?

Free Lawvere theory on a signature

Colimits of Lawvere theories

Exercise with Birkhoff's theorem in universal algebra

First isomorphism theorem for inverse semigroups together with v-prehomomorphisms?

Equational identities of involutions

In the language of two binary operations, is there a single identity that is equivalent to both distributive laws?

Constructing the category $\mathbf{Grp}$ from the sets of group structures

Prove the lattice Idl(L) of ideals of a lattice L is algebraic

Apparent counterexample in the theorem that term functions form a clone.

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