8

Answers

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1

Proofs without words

1

Best online mathematics videos?

-2

Best way to present (or avoid) a tedious epsilon argument in a paper

-1

Filtered ring giving rise to a graded-commutative ring

2

Open symplectic embeddings and deformation quantization

0

can one define the pullback between stacks of coherent sheaves for non-flat morphisms?

1

truncation commutes with localization?

6

What kind of conditions we need to make morphisms of schemes quasi-projective?