Diamond operator
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Wikipedia : http://en.wikipedia.org/wiki/Diamond_operatorIn number theory, the diamond operators 〈d〉 are operators acting on the space of modular forms for the group Γ_{1}(N), given by the action of a matrix (^{a b}
_{c d}) in Γ_{0}(N). The diamond operators form an abelian group and commute with the Hecke operators.
Unicode
In Unicode, the diamond operator is represented by the character U+22C4 ⋄ DIAMOND OPERATOR. ^{[1]}
Notes
- ^ "Mathematical Operators – Unicode" (PDF). Retrieved 2013-04-22.
References
- Diamond, Fred; Shurman, Jerry (2005), A first course in modular forms, Graduate Texts in Mathematics, 228, Berlin, New York: Springer-Verlag, ISBN 978-0-387-23229-4, MR 2112196
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