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• 29 Nearly all math classes are lecture+problem set based; this seems particularly true at the graduate level. What are some concrete examples of techniques other than the "standard math class" used at the *Graduate* level?
• 27 how does one understand GRR? (Grothendieck Riemann Roch)
• 23 Products of Conjugacy Classes in S_n
• 16 A natural refinement of the $A_n$ arrangement is to consider all $2^n-1$ hyperplanes given by the sums of the coordinate functions. Have you seen this arrangement? Is it completely intractable?
• 14 Gromov-Witten and integrability.
• 11 Fundamental group of $M_g^\circ$
• 10 An infinite product: combinatorial interpretation
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