Displaying similar documents to “The modular degree and the congruence number of a weight 2 cusp form”

Semiregularity of congruences implies congruence modularity at 0

Ivan Chajda (2002)

Czechoslovak Mathematical Journal

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We introduce a weakened form of regularity, the so called semiregularity, and we show that if every diagonal subalgebra of 𝒜 × 𝒜 is semiregular then 𝒜 is congruence modular at 0.