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Nov
20
comment Hilbert schemes of one point.
You are right. I fixed a base field $k$.
Nov
20
revised Hilbert schemes of one point.
added 17 characters in body
Nov
19
asked Hilbert schemes of one point.
Nov
19
comment Algebraic definition of blow-ups
A great answer! This bridges the two definitions! Thank you very much.
Nov
19
accepted Algebraic definition of blow-ups
Nov
18
comment A rational curve on projective complex surfaces.
You are right; my adjunction formula was wrong. $g(C)=0$ is automatic from the assumption. But we cannot conclude that $(C,C)=-1$. Maybe the problem is wrong.
Nov
18
revised A rational curve on projective complex surfaces.
added 1 characters in body
Nov
18
asked A rational curve on projective complex surfaces.
Nov
18
comment Algebraic definition of blow-ups
You are right. I'll fixe the typo. Thanks.
Nov
18
asked Algebraic definition of blow-ups
Nov
18
comment A question on elliptic fibration of K3 surfaces.
Yes, is means a proper flat morphism.
Nov
17
comment Algebraic classes in Hodge decomposition.
Thanks for the answer. It is not so trivial after all.
Nov
17
accepted Algebraic classes in Hodge decomposition.
Nov
17
asked Algebraic classes in Hodge decomposition.
Nov
17
asked A question on elliptic fibration of K3 surfaces.
Nov
12
accepted Good textbooks for lattice and coding theory
Nov
12
accepted Kähler–Einstein metric on Calabi–Yau manifold
Nov
12
comment Why is any rank $1$ sheaf always stable?
@QiL You are right. Thank you for pointing this out.
Nov
12
accepted Why is any rank $1$ sheaf always stable?
Nov
11
asked Why is any rank $1$ sheaf always stable?