Hartshorne's proof of Proposition 2.5, Chapter II of his book Algebraic Geometry
106550
The bijection between homogeneous prime ideals of $S_f$ and prime ideals of $(S_f)_0$
2235
Showing $\text{Aut}_\mathsf{Grp}(\mathbb{Z}/2\mathbb{Z} \times \mathbb{Z}/2\mathbb{Z}) \cong S_3$
115347
Showing that the fiber of a morphism of schemes over a point is homeomorphic to the preimage
3474
3 questions about Algebraic Geometry and Zariski topology
61387
Incorrect Solution for Problem 7 of Pinter's Book of Abstract Algebra, Chapter 2?
92962
Rings with $a^5=a$ are commutative
132653
How to show that $\mathfrak{sl}_n(\mathbb{R})$ and $\mathfrak{sl}_n(\mathbb{C})$ are simple?
16643
A slick proof that a field which is finitely generated as a ring is finite
119832
Galois group of the splitting field of the polynomial $x^5 - 2$ over $\mathbb Q$
101860
Relating the normal bundle and trivial bundles of $S^n$ to the tautological and trivial line bundles of $\mathbb{R}P^n$
111814
Precise connection between complexification of $\mathfrak{su}(2)$, $\mathfrak{so}(1,3)$ and $\mathfrak{sl}(2, \mathbb{C})$
50241
Cardinality of the quotient ring $\mathbb Z_5[i]/\langle 1+i\rangle$
123442
Prerequisites for Algebraic Geometry
125761
Is this proof for Theorem 16.4 Munkres Topology correct?
65873
A proof for Atiyah-Macdonald Exercise I.21.iii
80306
Hartshorne's weird definition of right derived functors and prop. III 2.6
129750
Order of $SL_2(\mathbb{Z}/ n\mathbb{Z})$