Jacob Bell

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visits	member for	1 year, 9 months
	seen	Sep 21 '12 at 7:57
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11 Questions

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7	is the pushforward of a flat sheaf flat?
4	If $f$ is birational, is the pushforward map on the numerical groups surjective?
4	cup products and smash products
4	Can Spectra be described as abelian group objects in the category of Spaces? (in some appropriate $\infty$-sense)
4	if a property holds on closed points of an algebraic variety, does it hold over all geometric points?

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4 Answers

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3	Prove that $A^{\oplus n} \otimes_A N \cong N^{\oplus n}$
1	cup products and smash products
1	Spectral sequence for Ext
0	Verify ten axioms of a tangent space

26 Tags

3 modules × 2	1 schemes
3 tensor-products	0 simplicial-stuff × 2
1 algebraic-geometry × 6	0 sheaf-theory
1 homotopy-theory × 5	0 quasicoherent-sheaves
1 algebraic-topology × 3	0 coherent-sheaves

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