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Alexandra Seceleanu's user avatar
Alexandra Seceleanu's user avatar
Alexandra Seceleanu's user avatar
Alexandra Seceleanu
  • Member for 13 years, 10 months
  • Last seen more than 9 years ago
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26
Is the sum $\sum\limits_{j=0}^{k-1}(-1)^{j+1}(k-j)^{2k-2} \binom{2k+1}{j} \ge 0?$
8
Constructing a space with prescribed cohomology ring
5
Harder-Narasimhan filtration of rank 4 vector bundles on $P^2$
5
Analogue of a ring extension splitting in the Kummer case