David Rydh

Member for 15 years, 2 months
Last seen this week

math.kth.se/~dary
KTH, Stockholm, Sweden

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80

What do epimorphisms of (commutative) rings look like?

Oct 6, 2009

37

When is fiber dimension upper semi-continuous?

Oct 8, 2009

34

Why are unramified maps not required to be locally of finite presentation?

May 11, 2015

28

Can a quotient ring R/J ever be flat over R?

Oct 9, 2009

23

If the direct image of f preserves coherent sheaves on noetherian schemes, how to show f is proper?

Oct 8, 2014

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When is an irreducible scheme quasi-compact?

Aug 5, 2010

9

Stack with affine stabilizers but not quasi-affine diagonal

Oct 2, 2009

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Are noetherian schemes generically Jacobson?

Feb 5, 2013

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+10

coarse moduli space of DM stacks

+10

Can a quotient ring R/J ever be flat over R?

+20

What do epimorphisms of (commutative) rings look like?

+10

When is an irreducible scheme quasi-compact?

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