User Salvo Tringali

1 vote

Finite non-commutative ring with few invertible (unit) elements

answered Jun 20, 2021 at 8:46

1 vote

Accepted

Weak ideal systems $r$ for which the $r$-coheight satisfies a kind of triangle inequality

answered Apr 24, 2017 at 17:54

1 vote

Monoids (or semigroups) with a "finite decomposition" property

answered Apr 30, 2017 at 14:47

1 vote

Are there results in "Digit Theory"?

answered Mar 21, 2013 at 10:57

1 vote

problem related to Airy functions

answered Apr 9, 2013 at 21:57

1 vote

Who needs a symmetric upper asymptotic density on the integers?

answered Jun 16, 2015 at 12:55

1 vote

If $(\mathbb M, \tau)$ is a topological monoid, is $\tau$ always induced by a [left] subinvariant semimetric?

answered Apr 16, 2014 at 8:02

1 vote

Accepted

Terminology for a monoid $(H, \cdot)$ s.t. $ax=a$ or $xa =a$ only if $x$ is a unit

answered Jan 17, 2017 at 8:18

1 vote

A non-reduced, commutative BF-monoid s.t. $au = u$ for all $a \in \mathcal A(H)$ and $u \in H^\times$

answered Feb 28, 2017 at 22:18

1 vote

Accepted

If $H$ is essentially equimorphic to $K$, then is $H$ atomic only if so is $K$?

answered Apr 1, 2017 at 19:03

1 vote

Monoids in which every prime is an atom

answered Apr 3, 2017 at 15:09

0 votes

Values attained by the coheight of $(H \setminus H^\times)^k$ as a function of $H$ and $k$

answered Apr 24, 2017 at 11:20

0 votes

Existence of a possible counterexample in automaton semigroups

answered Jun 25, 2013 at 17:06

0 votes

binomial/factorial identity mod p

answered Jul 2, 2015 at 15:38

0 votes

Non-abelian divisible groups

answered Mar 21, 2013 at 10:20

0 votes

Terminology: Banach spaces equipped with continuous associative product?

answered Jun 14, 2012 at 11:44

0 votes

Is there some example that nicely extends the multiplication of natural numbers?

answered Feb 17, 2022 at 10:34

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77 Answers

Finite non-commutative ring with few invertible (unit) elements

Weak ideal systems $r$ for which the $r$-coheight satisfies a kind of triangle inequality

Monoids (or semigroups) with a "finite decomposition" property

Are there results in "Digit Theory"?

problem related to Airy functions

Who needs a symmetric upper asymptotic density on the integers?

If $(\mathbb M, \tau)$ is a topological monoid, is $\tau$ always induced by a [left] subinvariant semimetric?

Terminology for a monoid $(H, \cdot)$ s.t. $ax=a$ or $xa =a$ only if $x$ is a unit

A non-reduced, commutative BF-monoid s.t. $au = u$ for all $a \in \mathcal A(H)$ and $u \in H^\times$

If $H$ is essentially equimorphic to $K$, then is $H$ atomic only if so is $K$?

Monoids in which every prime is an atom

Values attained by the coheight of $(H \setminus H^\times)^k$ as a function of $H$ and $k$

Existence of a possible counterexample in automaton semigroups

binomial/factorial identity mod p

Non-abelian divisible groups

Terminology: Banach spaces equipped with continuous associative product?

Is there some example that nicely extends the multiplication of natural numbers?