New posts in Ring Theory

Some subfield of ring $\mathbb{R}[x,y]/(x^2+y^2+1)$

A projective ideal in an integral domain is finitely generated

Why does $Re=S^{-1}R$?

Determining the ideals of a quotient ring

Determine the generator of an ideal of ring of integers

About comment by Jacobson on proving that a morphism in $\mathbf{Ring}$ is monic iff it is injective

Computing $\phi(\frac32)$ where $\phi$ is an automorphism of $\mathbb Q[\sqrt2]$ such that $\phi(1)=1$ and $\phi(\sqrt2)=\sqrt2$

Proof Check: Idempotents of a local commutative ring

Existence of an idempotent element $\not = 1$ and $\not = 0$

Can we invert these analogous "Dirichlet" series for GCD / LCM convolution?