Andrea Ferretti

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Name Andrea Ferretti
Member for 4 months
Seen 25 mins ago
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Location Bonn
Age 29
Here in Bonn for a one year postdoc at MPIM
26

Questions
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Stacks and sheaves

feb 16 at 19:52 john 440●1●9

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Canonical topology on the category of schemes?

dec 24 at 0:14 Shizhuo Zhang 1,422●1●1●9

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Consequences of the Riemann hypothesis

mar 6 at 0:51 KConrad 2,612●9●26

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Nonalgebraic complex varieties

jan 31 at 0:03 algori 3,301●4●19

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27

Answers
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16
Slick proof?: A vector space has the same dimension as its dual if and only if it is finite dimensional
8
Is a ‘generic’ variety nonsingular? Or singular?
7
Ways to prove the fundamental theorem of algebra
7
Hodge Index theorem for Complex Manifolds
6
Looking for an introductory textbook on algebraic geometry for an undergraduate lecture course
6
Family of Enriques surfaces and Grothendieck-Riemann-Roch
5
What are your favorite instructional counterexamples? (2)
5
K3 surface of genus 8
5
Godel’s 1st incompleteness theorem - clarification.
4
What is the exact statement of “there are 27 lines on a cubic”?
4
Transition Functions and Complex Structure
4
Linear Algebra Texts?
3
Family of Enriques surfaces and GRR, Part 2
3
blowing up, -1 curves, effective and ample divisors
3
Primacy of arcs/arrows over vertices/objects
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Why is the exterior algebra so ubiquitous?
3
What are the open subsets of $\mathbb{R}^n$ that are diffeomorphic to $\mathbb{R}^n$
3
What is the Cayley projective plane?
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How to determine the homotopy groups of the suspension of a space ?
2
Resources on Invariant Theory
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Normal bundle to a double line in quartic threefold
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Free, high quality mathematical writing online?
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Characteristic classes in generalized cohomology theories?
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Primary decomposition for modules
1
Definition of Chow groups over Spec Z
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What’s your favorite equation, formula, identity or inequality?
0
Hilbert scheme of points on a complex surface

 

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