gigi's user avatar
gigi's user avatar
gigi's user avatar
gigi
  • Member for 3 years, 2 months
  • Last seen this week
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
949 views

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

7 votes
1 answer
354 views

Strict transform of a tangent curve under blow-up

6 votes
2 answers
488 views

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

5 votes
2 answers
209 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
401 views

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

4 votes
0 answers
178 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
252 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
127 views

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

2 votes
0 answers
108 views

Local complete intersection on a smooth variety

2 votes
1 answer
235 views

Singular locus of a linear system of hyperplane sections

2 votes
0 answers
151 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
241 views

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

2 votes
1 answer
278 views

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

2 votes
1 answer
195 views

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

2 votes
0 answers
145 views

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

2 votes
1 answer
108 views

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

2 votes
0 answers
148 views

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

2 votes
1 answer
93 views

Class of the discriminant of a conic bundle

2 votes
0 answers
72 views

Integers solutions of products of truncated Riemann zeta functions

1 vote
0 answers
118 views

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

1 vote
0 answers
366 views

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

1 vote
0 answers
132 views

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

0 votes
0 answers
111 views

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