Hartshorne Ⅱ prop 6.6, irreducible
43170
inverse image of fiber product of scheme
33338
Problem on $\operatorname{Hom}(\mathbb Z_6,R^*\oplus C^*)$
141792
Slick proof the determinant is an irreducible polynomial
20790
What are irreducibles in the ring $R$ of entire functions?
54192
Why $x^{p^n}-x+1$ is irreducible in ${\mathbb{F}_p}$ only when $n=1$ or $n=p=2$
154845
Irreducible elements in  $\mathbb{Z}[\sqrt{-2}]$ and is it a Euclidean domain?
80306
Hartshorne's weird definition of right derived functors and prop. III 2.6
114198
Showing that $y$ is irreducible in $\mathbb R[x,y]/(x^2+y^2-1)$.
96071
How to show that a prime ideal of height 2 can’t necessarily be generated by 2 elements? (Hartshorne exercise I.1.11)
108767
Irreducible Components of the Prime Spectrum of a Quotient Ring and Primary Decomposition
87101
Irreducible but not prime in $K[X,Y]/(X^2-Y^3)$
120147
For what prime numbers $p$ is $x^2+x+1$ irreducible in $\mathbb{F}_p[X]$
121658
$x^2+y^2-1$ irreducible in $\mathbb{Q}[x,y]$?
150223
Nilradical and Jacobson's radical.
99341
Basic question: closure of irreducible sets
44502
An irreducible polynomial cannot share a root with a polynomial without dividing it
140497
Irreducibles are prime in a UFD