List questions from rngs | MathQa

Prove that every rng with a left-side identity has a right-side identity?

Published on 05 Jun 2025 - 3:58

In a ring, how do we prove that a * 0 = 0?

Published on 05 Jun 2025 - 23:26

Ring of even integers considered as module over itself

Published on 05 Jun 2025 - 17:15

Bounding the number of commutative rings with identity of size n

Published on 06 Jun 2025 - 3:22

For $\operatorname{char}(R)=\bar n$ and $\bar m<\bar n$, show that $\bar m\cdot x=0$ is only possible in a "trivial" manner.

Published on 06 Jun 2025 - 1:55

Free $R$-module when $R$ is not unital

Published on 05 Jun 2025 - 0:42

Must this rng be a ring?

Published on 04 Jun 2025 - 23:13

defining gcd on rings

Published on 05 Jun 2025 - 15:12

PRNG for compression

Published on 06 Jun 2025 - 19:22

Nontrivial subring with identity of a ring without identity

Published on 06 Jun 2025 - 6:23