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Results tagged with modular-curves
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user 141653
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Explicit natural correspondence between cusps of $X(N)$ and isomorphism classes of level $N$...
In Katz' paper Antwerp III, section 1.4 (Ka-14) one reads (we assume $n \geq 3$ integer):
''The scheme $\overline{M}_n - M_n$" over $\mathbb{Z}[1/n]$ is finite and étale, and over $\mathbb{Z}[1/n,\zet …
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