Nontrivial subring with identity of a ring without identity
111679
Example of a ring without unity that has a subring with unity?
1425
The Chinese Remainder Theorem for Rings.
30465
Determining which rings have a module which is not semisimple
150170
Subrings of fraction fields
32772
Proving units in a ring
100340
Invariant dimension property on a ring without zero divisors
137450
Two-sided ideal generated by subset of not commutative ring
136389
Finding an isomorphic subring of matrices
1141
Existence of totally ordered ring with zero divisors
94203
Examples for almost-semirings without absorbing zero
19838
Prove that in general the set of the right zero divisors is different from the set of left zero divisors in a ring R
19310
Identify the ring $\mathbb{Z}[x]/(2x)$
119067
Basic Ring Theory Question involving the unit element
119360
Find all subrings of $\mathbb{Z}^2$
148434
Ring where irreducibles are primes which is not an UFD
74924
identity element of $(D_n ,\gcd)$
51593
Every finite commutative ring with no zero divisors contains a multiplicative identity?