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Fei YE

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37 Questions

Votes Activity Newest Views
19
26
votes
3
answers
2k
views

Geometry meaning of higher cohomology of sheaves?

ag.algebraic-geometry
Jan 3 '14 at 11:39 Community♦ 1
18
17
votes
3
answers
5k
views

Evidences on Hartshorne's conjecture? References?

ag.algebraic-geometry vector-bundles
Aug 14 '12 at 10:52 Community♦ 1
8
17
votes
4
answers
4k
views

Why do automorphism groups of algebraic varieties have natural algebraic group structure?

ag.algebraic-geometry
Oct 26 '10 at 20:59 Qfwfq 20.5k
8
12
votes
7
answers
3k
views

Is there any rational curve on an Abelian variety?

ag.algebraic-geometry abelian-varieties
Mar 20 '14 at 21:49 F_L 9,990
16
12
votes
2
answers
5k
views

When is an algebraic variety $\mathbb{Q}$-factorial?

ag.algebraic-geometry
Aug 28 '11 at 19:57 Remke Kloosterman 3,208
4
12
votes
2
answers
2k
views

snake lemma in category of groups

ct.category-theory
Jan 25 '11 at 17:40 Auguste Hoang Duc 440
4
9
votes
3
answers
1k
views

Why a subvariety of a variety of general type is of general type

ag.algebraic-geometry
Mar 21 '19 at 5:54 Ning JIANG 109
7
8
votes
3
answers
2k
views

Punctured spectrums of local rings

ag.algebraic-geometry ac.commutative-algebra
Aug 11 '12 at 0:26 user22479 715
4
7
votes
1
answer
2k
views

How to resolve a wedge product of vector bundles

ag.algebraic-geometry vector-bundles linear-algebra
Oct 13 '10 at 7:26 Chris Brav 1,749
8
6
votes
2
answers
2k
views

Equivalent definitions of arithmetically Cohen-Macaulay varieties

ag.algebraic-geometry ac.commutative-algebra
Nov 20 at 9:43 Community♦ 1
3
6
votes
1
answer
1k
views

Direct summands of direct sum of line bundles on projective varieties

ag.algebraic-geometry
Mar 25 '12 at 11:36 Community♦ 1
5
5
votes
1
answer
3k
views

Finite morphisms between algebraic varieties are flat?

ag.algebraic-geometry
Jul 4 '17 at 8:00 Zach Teitler 4,281
4
5
votes
2
answers
2k
views

Smooth projective varieties of Picard number one

ag.algebraic-geometry
Jan 9 '15 at 12:40 jmc 4,627
3
5
votes
3
answers
3k
views

Serre type vanishing theorem of coherent sheaves on quasi-projective variety?

ag.algebraic-geometry ac.commutative-algebra
Oct 3 '10 at 0:51 Sándor Kovács 39.5k
 
5
votes
1
answer
3k
views

Algebraic equivalence VS Numerical Equivalence - An Example.

ag.algebraic-geometry algebraic-surfaces algebraic-cycles
Feb 11 '10 at 17:10 Community♦ 1
1
4
votes
0
answers
140
views

Nomality of blow-ups of higher dimensional rational singularities

ag.algebraic-geometry
Jan 20 '19 at 20:17 Fei YE 2,278
2
4
votes
1
answer
272
views

multiplicities of rational singularities in higher dimension

ag.algebraic-geometry
Nov 18 '12 at 21:10 Karl Schwede 18.7k
3
4
votes
2
answers
936
views

Cohen-Macaulay sheaves which are not locally free

ag.algebraic-geometry ac.commutative-algebra
Sep 7 '12 at 7:05 Community♦ 1
1
4
votes
1
answer
403
views

Derived categories of symmetric products

ag.algebraic-geometry
Sep 29 '10 at 18:37 Community♦ 1
1
4
votes
2
answers
468
views

Vanishing of Self-Ext groups of vector bundles

ag.algebraic-geometry tag-removed vector-bundles
Aug 13 '10 at 15:02 Hailong Dao 27.7k
2
4
votes
3
answers
1k
views

Degree of an embedded algebraic variety

ag.algebraic-geometry
Jan 7 '10 at 3:05 Emerton 53.4k
1
3
votes
1
answer
2k
views

Multiplicity of a singular point

ag.algebraic-geometry ac.commutative-algebra
Jul 19 '11 at 23:35 Qing Liu 10.5k
4
3
votes
4
answers
1k
views

Can $\mathbb{P}^n$ be regarded as an algebraic vector bundle over some algebraic variety?

ag.algebraic-geometry vector-bundles
Aug 3 '10 at 1:49 Charles Staats 6,730
1
3
votes
1
answer
629
views

Proof of a Theorem in the paper “Construction of bundles on P^n” by Horrocks

ag.algebraic-geometry vector-bundles
Apr 15 '10 at 6:54 Hailong Dao 27.7k
1
3
votes
1
answer
392
views

Homotopy classes of differential maps VS those of continuous maps

dg.differential-geometry gt.geometric-topology
Mar 28 '10 at 17:12 Pete L. Clark 60.5k
 
2
votes
1
answer
147
views

Differentiability of restricted volumes of big divisors

ag.algebraic-geometry
Nov 17 '18 at 19:23 Takumi Murayama 1,288
1
2
votes
1
answer
187
views

Minimal number of nodes in a complex line arrangement.

co.combinatorics ag.algebraic-geometry
Aug 13 '11 at 10:20 rita 6,143
 
2
votes
2
answers
670
views

Curves on elliptic ruled surfaces?

ag.algebraic-geometry elliptic-curves
Dec 19 '09 at 9:03 Joel Fine 5,387
 
1
vote
2
answers
365
views

Dimension and singularities of the minimal log canonical center

ag.algebraic-geometry
Nov 1 '12 at 17:51 Community♦ 1
 
1
vote
1
answer
268
views

Ext modules of coherent sheaves and associated modules

ac.commutative-algebra ag.algebraic-geometry
May 30 '12 at 4:41 Fei YE 2,278
1
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