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k_c
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  • Rome, Italy
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Lattice points in regular simplex
May 29, 2016
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Blowup of $\mathbb{P}^n$ at a point is irreducible
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Calculating eigenvalues of the induced action on $H^0(2 K_C)$
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Consider the ring $R=ℂ[X,Y]$ and the ideal $I=(X^2-Y,X^2+Y)$. We find (??) that $R/I ≅ℂ[X]/(X^2)$.