List questions from blowup

Published on 13 Mar 2013 - 1:13

298

Views

When is the projection from a point on the variety smooth?

Published on 26 Mar 2026 - 5:54

146

Views

Why is the blow up of a submanifold of $\mathbb{P}^n$ again projective

Published on 06 Aug 2020 - 11:11

168

Views

How to show the blowing down a ruled surface is projective

Published on 26 Mar 2026 - 4:32

111

Views

Question concerning blowups: Closed immersion $\operatorname{Proj}(A+\mathfrak m+\mathfrak m^2+...)\rightarrow \operatorname{Spec}(A[T_1,...,T_n])$

Published on 26 Mar 2026 - 2:49

205

Views

Complex and Symplectic Blow-ups

Published on 14 Aug 2020 - 14:22

126

Views

Integral of a blow up of $\mathbb P^2$

Published on 26 Mar 2026 - 5:56

218

Views

Trying to understand exceptional divisors and Du Val singularities.

Published on 26 Aug 2020 - 1:58

327

Views

Vakil 9.3 F: Fibers over Blow-Up Map

Published on 03 Sep 2020 - 18:52

542

Views

Multiple blow-ups

Published on 26 Mar 2026 - 6:00

197

Views

What is the intuition behind blowup of affine space?

Published on 09 Sep 2020 - 19:54

526

Views

Why does the blowup of a curve at a singular point decreases the arithmetic genus?

Published on 19 Sep 2020 - 20:44

132

Views

Blow-Up of Quasiprojective Variety and Conormal Space

Published on 26 Mar 2026 - 6:21

121

Views

Formula $m_p(C\cap D)=\sum_xm_x(C)m_x(D)$, for $x$ infinitely near $p$, applied to a concrete example

Published on 20 Sep 2020 - 18:22

60

Views

Handle Blow-Ups in differential equations

Published on 26 Sep 2020 - 15:11

List Question

Classifying a Branched Covering Space

When is the projection from a point on the variety smooth?

Why is the blow up of a submanifold of $\mathbb{P}^n$ again projective

How to show the blowing down a ruled surface is projective

Question concerning blowups: Closed immersion $\operatorname{Proj}(A+\mathfrak m+\mathfrak m^2+...)\rightarrow \operatorname{Spec}(A[T_1,...,T_n])$

Complex and Symplectic Blow-ups

Integral of a blow up of $\mathbb P^2$

Trying to understand exceptional divisors and Du Val singularities.

Vakil 9.3 F: Fibers over Blow-Up Map

Multiple blow-ups

What is the intuition behind blowup of affine space?

Why does the blowup of a curve at a singular point decreases the arithmetic genus?

Blow-Up of Quasiprojective Variety and Conormal Space

Formula $m_p(C\cap D)=\sum_xm_x(C)m_x(D)$, for $x$ infinitely near $p$, applied to a concrete example

Handle Blow-Ups in differential equations

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