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It is great to learn math on this website.

Dec
2
awarded  Notable Question
Nov
27
comment Intersections of hypersurfaces of degree $d$ in $\mathbb CP^n$
Thanks a lot for this!
Nov
27
accepted Intersections of hypersurfaces of degree $d$ in $\mathbb CP^n$
Nov
27
asked Intersections of hypersurfaces of degree $d$ in $\mathbb CP^n$
Nov
8
awarded  Popular Question
Sep
24
awarded  Autobiographer
Jul
24
comment A topological criterion for connectedness of a semi-ample divisor
Artie, I think you right. Thank you! This reasoning is considerably simpler than what I had in mind.
Jul
24
comment A topological criterion for connectedness of a semi-ample divisor
Artie, thanks for your comment. Why $f: X\to Y$ has connected fibres?
Jul
24
revised A topological criterion for connectedness of a semi-ample divisor
added 10 characters in body
Jul
24
asked A topological criterion for connectedness of a semi-ample divisor
Jul
22
comment Non-vanishing of elements in cohomology of full Flag varieties
I finally got it :)
Jul
22
accepted Non-vanishing of elements in cohomology of full Flag varieties
Jul
21
comment Non-vanishing of elements in cohomology of full Flag varieties
Thank you very much David! I will need a bit of time to digest your proof :)
Jul
21
comment Non-vanishing of elements in cohomology of full Flag varieties
abx, yes thank you, I understand (I added one more tag - combinatorics). I ask this question here because for the moment I can not answer this combinatorial question.
Jul
21
revised Non-vanishing of elements in cohomology of full Flag varieties
edited tags
Jul
21
comment Non-vanishing of elements in cohomology of full Flag varieties
No Peter, I am interested in classes $\sigma_i$. If one replaces $\sigma_i$ by $\sigma_i-\sigma_{i-1}$ as you suggest, the question becomes completely different (and easy to answer)
Jul
21
asked Non-vanishing of elements in cohomology of full Flag varieties
Jul
20
accepted Rational normal curves on Grassmanians
Jul
16
comment A semi-ampleness criterion for homogeneous bundles on homogeneous spaces?
Tanks Jason! I could not understand that ${\cal F}(X)$ are global sections :) . But now once I've got it, your answer is crystal clear :)
Jul
16
accepted A semi-ampleness criterion for homogeneous bundles on homogeneous spaces?