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Jun Lu's user avatar
Jun Lu's user avatar
Jun Lu
  • Member for 14 years, 8 months
  • Last seen more than 9 years ago
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I'm interesting in algebraic surface now.
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question
13
How to compute the Picard-Lefschetz monodromy matrix of a non-semistable fiber?
Apr 2, 2010
question
11
How to get a Dehn-twist presentation of a periodic map of a Riemann surface?
Jul 5, 2010
question
5
What is the definition of ideal boundary?
May 31, 2010
question
4
Why do the subgroups of $Hdg^{2k}(X)$ generated by the cycle classes and Chern classes of vector bundles coincide in algebraic variety $X$?
Jul 12, 2011
question
3
Why $\pi_1(X)\cong \pi_1(Y)$ for a double cover $\pi:X\to Y$ with a nef, smooth and big branch locus?
Oct 27, 2012
question
2
What is Mordell-Weil lattice?
Jun 25, 2010
question
2
How to find the global equation of a dual curve?
Oct 27, 2012
answer
2
Global sections of a linear system
Jul 12, 2011
answer
2
Monodromy group of 1-dimensional families of hyperelliptic curves
Nov 19, 2012
question
1
Why does the divisor $Z$ homologous to $0$ in projective mainfold satisfy that every irreducible hypersurface appears in $Z$ with multiplicity $1$?
Jul 14, 2011