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gigi
  • Member for 3 years, 4 months
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30 votes
1 answer
1k views

How to prove that the solution to $x^{x+1}=(x+1)^{x}$ is transcendental?

13 votes
2 answers
965 views

Elementary proof that $\mathbb{R}^3 \setminus \{p_1,\dots,p_n\}$ is not homeomorphic to $\mathbb{R}^3$

7 votes
1 answer
364 views

Strict transform of a tangent curve under blow-up

6 votes
2 answers
499 views

Geometric meaning of coherent sheaves $\mathcal{F} \otimes \mathcal{O}_{\mathbb{P}^n}(d)$ over $\mathbb{P}^n$

5 votes
2 answers
214 views

Surface of type $(2,2)$ on the Segre cubic scroll $\mathbb{P}^1 \times \mathbb{P}^2 \subset \mathbb{P}^5$

5 votes
1 answer
417 views

Action of the symmetric group $S_3$ on an elliptic curve $E$ defined over $\mathbb{Z}$

4 votes
0 answers
181 views

Example of a computation of the volume of a subvariety in projective space $\mathbb{P}^n$

4 votes
0 answers
108 views

Tensors of minimal rank in Schur modules $S_{\lambda}V \subset V^{\otimes |\lambda|}$

4 votes
1 answer
179 views

Generalization of $\lim_{n \rightarrow \infty} \prod_{i=1}^{n}\frac{2i-1}{2i}$ for a character $\chi:\mathbb{Z}/s \mathbb{Z} \rightarrow \mathbb{C}^*$

4 votes
1 answer
268 views

Normal bundle to Veronese varieties $v_d(\mathbb{P}^n)$ into $\mathbb{P}(H^0(\mathcal{O}_{\mathbb{P}^n}(d)))$

3 votes
1 answer
132 views

Varieties in the $\mathit{GL}(V)$-module $S_{\lambda}V$

2 votes
0 answers
109 views

Local complete intersection on a smooth variety

2 votes
1 answer
243 views

Singular locus of a linear system of hyperplane sections

2 votes
0 answers
155 views

Limit of infinite power tower $\lim_{n \rightarrow +\infty}\frac{a_0^{a_1^{a_2^{^{.^{.^{a_{n}}}}}}}}{b_0^{b_1^{b_2^{^{.^{.^{b_{n}}}}}}}}$

2 votes
1 answer
244 views

Help about "Varieties with small Dual Varieties" by L.Ein

2 votes
1 answer
304 views

Trivial subbundle of universal bundle on the Grassmannian $\mathbb{G}(k,n)$

2 votes
1 answer
199 views

Equivalence of sequences of blowups of $\mathbb{P}^3$

2 votes
0 answers
162 views

Is the ideal of the Veronese variety $V_{d,n}$ generated by quadrics?

2 votes
1 answer
109 views

Sheaves on families of genus 2 curves in Hassett's paper

2 votes
0 answers
151 views

Question about an example of a conic bundle in a paper by Kollár

2 votes
1 answer
94 views

Class of the discriminant of a conic bundle

2 votes
0 answers
75 views

Integers solutions of products of truncated Riemann zeta functions

1 vote
0 answers
119 views

Trisecant lines to curves in $\mathbb{P}^3$: a reference request

1 vote
0 answers
403 views

Embeddings of Hirzebruch surfaces $\mathbb{P}(\mathcal{O}_{\mathbb{P}^1}\oplus\mathcal{O}_{\mathbb{P}^1}(n))$

1 vote
0 answers
133 views

Cubic surface in $\mathbb{P}^3$ singular along a line

0 votes
0 answers
111 views

Problem in calculating the global sections of $\mathcal{O}_{\mathbb{P}^3}(d)\otimes \mathcal{I}_Z$