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TonyS's user avatar
TonyS
  • Member for 14 years, 2 months
2 votes
0 answers
244 views

Is simplicity preserved under completion of the base ring?

2 votes
2 answers
943 views

Torsion in tensor products over noncommutative rings

2 votes
1 answer
540 views

Quotient of an abelian surface by a finite group, irreducible components

1 vote
1 answer
735 views

Application of the base change theorem

1 vote
1 answer
252 views

Are pullbacks from a factor of a product scheme flat over the other factor?

1 vote
2 answers
534 views

Generalized Quot-schemes

1 vote
1 answer
340 views

Cohomology of the general linear group on punctured spectra of 2-dimensional power series rings

1 vote
0 answers
168 views

Choosing generators of a submodule with divisibility properties

1 vote
1 answer
267 views

Q-Divisor and Determinant Map on a Maximal Order

1 vote
1 answer
377 views

Restriction of divisors to the generic fiber

1 vote
1 answer
165 views

Why is multiplication with a scalar no global morphism?

1 vote
1 answer
387 views

Morphisms of a simple sheaf over an algebra to its double dual

1 vote
1 answer
145 views

Is every nontrivial morphism already injective in this case?

1 vote
1 answer
402 views

Equality of chern classes and isomorphism

1 vote
1 answer
282 views

Can one determine the local structure of a moduli space of bundles just by knowing the Ext-groups?

0 votes
1 answer
375 views

Linear system corresponding to rational curves on a K3 surface

0 votes
1 answer
305 views

Generalized Picard group (reflexive fractional ideals, principal ideals)

0 votes
1 answer
257 views

Subtleties in the construction of base change morphisms

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