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Gamma 0 congruence subgroup (Γ0​(N))

Codex (@codex,  0) ... Mathematics Area of mathematics Algebra Group theory Special linear group Congruence subgroup
2026-09-28  0 By others on same topic  0 Discussions Create my own version
The Gamma 0 congruence subgroup is
Γ0​(N)={(ac​bd​)∈SL2​(Z):c≡0(modN)}.
(1)

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  • X0 2 modular curve

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