Question

Why is an isomorphism between (total) algebras required to have an inverse which is a homomorphism?

score 56 · Answer 1 · 2018-11-09 01:19:26

56

Views

Why is an isomorphism between (total) algebras required to have an inverse which is a homomorphism?

Published on 09 Nov 2018 - 1:19

score 130 · Answer 2 · 2018-11-13 17:37:33

130

Views

Atomlessness of the Lindenbaum-Tarski $\sigma$-algebra of infinitary language $L_{\omega_1}$

Published on 13 Nov 2018 - 17:37

score 59 · Answer 3 · 2026-03-25 05:11:21

59

Views

VAR, Algebra and local presentability

Published on 25 Mar 2026 - 5:11

score 127 · Answer 4 · 2018-11-30 11:49:20

127

Views

Is there a generalization of universal algebra in which inequalities are permitted?

Published on 30 Nov 2018 - 11:49

score 558 · Answer 5 · 2026-03-22 20:07:14

558

Views

Definition of Tropical Hypersurface

Published on 22 Mar 2026 - 20:07

score 79 · Answer 6 · 2018-12-14 12:18:06

79

Views

When can one atom be below the join of two distinct atoms?

Published on 14 Dec 2018 - 12:18

score 430 · Answer 7 · 2018-12-14 15:35:22

430

Views

how can we define real number to form of a (first-order) structure of type $\mathcal L$?

Published on 14 Dec 2018 - 15:35

score 60 · Answer 8 · 2018-12-15 10:02:14

60

Views

Is there a "low-powered" axiom system for producing all the $\infty$-groupoid axioms?

Published on 15 Dec 2018 - 10:02

score 303 · Answer 9 · 2018-12-23 12:14:43

303

Views

Troubles by understanding arity of terms in A Course in Universal Algebra.

Published on 23 Dec 2018 - 12:14

score 163 · Answer 10 · 2018-12-28 21:00:22

163

Views

How to recognise an algebra form a ring?

Published on 28 Dec 2018 - 21:00

score 169 · Answer 11 · 2018-12-31 14:39:22

169

Views

Is a set together with an operation always a relational structure?

Published on 31 Dec 2018 - 14:39

score 121 · Answer 12 · 2018-12-31 14:49:02

121

Views

How are F-bialgebras defined?

Published on 31 Dec 2018 - 14:49

score 1.5k · Answer 13 · 2019-01-11 20:51:53

1.5k

Views

Can Erdős-Turán $\frac{5}{8}$ theorem be generalised that way?

Published on 11 Jan 2019 - 20:51

score 49 · Answer 14 · 2019-01-15 20:05:18

49

Views

Give a subgroup with an identity such that this identity does not hold in the bigger group.

Published on 15 Jan 2019 - 20:05

score 69 · Answer 15 · 2019-01-18 03:56:57

69

Views

Counterexample for Converse of Surjective Homomorphisms

Published on 18 Jan 2019 - 3:56

List Question

Why is an isomorphism between (total) algebras required to have an inverse which is a homomorphism?

Atomlessness of the Lindenbaum-Tarski $\sigma$-algebra of infinitary language $L_{\omega_1}$

VAR, Algebra and local presentability

Is there a generalization of universal algebra in which inequalities are permitted?

Definition of Tropical Hypersurface

When can one atom be below the join of two distinct atoms?

how can we define real number to form of a (first-order) structure of type $\mathcal L$?

Is there a "low-powered" axiom system for producing all the $\infty$-groupoid axioms?

Troubles by understanding arity of terms in A Course in Universal Algebra.

How to recognise an algebra form a ring?

Is a set together with an operation always a relational structure?

How are F-bialgebras defined?

Can Erdős-Turán $\frac{5}{8}$ theorem be generalised that way?

Give a subgroup with an identity such that this identity does not hold in the bigger group.

Counterexample for Converse of Surjective Homomorphisms

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