Is there a name for a ring with no additive inverses (like the non-negative real numbers)?
4800
Is there a name for an algebraic structure like this?
137450
Two-sided ideal generated by subset of not commutative ring
85633
Rings of polynomials whose (partial) derivatives vanish are Noetherian?
146276
Is there a ring such that the nilradical of it is not nilpotent?
66272
Is there a common notion of $\mathbb{R}^n$, for non-integer $n$?
5594
Question about the Euclidean ring definition
146560
Is there any uncountably infinite set that does not generate the reals?
63568
Ring with finitely many zerodivisors
8787
In a ring $(A,+, \cdot)$ if $aba = a$ then $bab = b$ and all non zero elements in $A$ are invertible.
66451
In a ring, how do we prove that a * 0 = 0?
155445
What kind of ring $R$ makes $\mathcal O(\mathrm{Proj}\,R[x_0,\cdots,x_n])=R$?
133495
Example of a ring without Invariant Basis Property
112485
Allowing the zero element in a field to have an inverse
127030
Simple example of non-arithmetic ring (non-distributive ideal lattice)
75558
Counter-example for prime ideals in a non commutative ring.
38346
Commutative Ring: Nilpotent elements closed under addition?
18003
Standard example where Jacobson radical not equal nilradical