J.C. Ottem

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Name J.C. Ottem
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Location Cambridge
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I am a PhD-student at the DPMMS in Cambridge. I am interested in algebraic geometry.
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Questions
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How many cubes cover a bigger cube?

dec 23 10 at 20:10 J.C. Ottem 8,588●1●16●45

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Do finitely many plurigenera determine the Kodaira dimension?

mar 9 at 14:25 CX 331●3●7

 

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Line bundles vs. Cartier divisors on a non-integral scheme

apr 21 10 at 17:42 Hailong Dao 15.4k●29●69

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Kodaira dimension and fundamental groups

mar 9 11 at 10:22 J.C. Ottem 8,588●1●16●45

 
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Noether-Lefschetz over finite fields

apr 26 at 14:48 J.C. Ottem 8,588●1●16●45

 

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111

Answers
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Pseudonyms of famous mathematicians
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Life after Hartshorne (the book, not the person)…
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Why does so much recent work involve K3 surfaces?
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Embedding of algebraic surfaces
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when is the power of a nonnegative polynomial a sum of squares?
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Moduli space of genus 2 curves
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Is there an analog of Kodaira vanishing for singular varieties
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An example of a beautiful proof that would be accessible at the high school level?
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Problem in Rick Miranda: finding genus of a Projective curve
15
Surfaces containing curves of arbitrarily negative self-intersection
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Are complements of non-isomorphic affine hypersurfaces necessarily non-isomorphic?
14
Polynomial reducible modulo every integer
14
Open problems in Birational Geometry, after BCHM
13
References about pseudoeffective cone
12
Individual mathematical objects whose study amounts to a (sub)discipline? (2)
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blowing curves down
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Intersection of subvarieties in grassmannian space
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Proj for rings graded by different things then $\mathbb N$ ?
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What are examples of mathematical concepts named after the wrong people? (Stigler’s law)
10
Proofs that require fundamentally new ways of thinking
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Non finitely-generated subalgebra of a finitely-generated algebra
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Which Fibonacci numbers are the sum of two squares?
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The Galois group of a random polynomial
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how to determine whether an ideal is prime or not by an algorithm
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Are there (-2)-curves on an Enriques surface?
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fundamental groups of curves
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Zeros of a holomorphic function
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Nagata’s bizzare examples
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nef Cone of a Toric Variety
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Proofs in the same vein as Ax-Grothendieck
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