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Questions about modular forms and related areas

3 votes
0 answers
145 views

Classical Hecke operators and Hecke algebra of type $A_1$

What's the relation between the classical Hecke operators (as defined in J. P. Serre's A course in arithmetic chapter 6) and the Hecke algebra of type $A_1$, i.e. the algebra generated by the vertices …
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4 votes
0 answers
106 views

Elliptic integral as quantity associated with Riemann surface?

There are many elliptic integrals, so to show my point let me just pick one of them (complete elliptic integral of the first kind [1]): $$K(k) = \int_{0}^{1} \frac {dx} {\sqrt{(1-x^{2})(1-k^{2}x^{2})} …
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2 votes
0 answers
88 views

Quillen bundles and 2D CFTs

Roughly speaking, a (mathematical) genus-$0$ conformal field theory (CFT) is a projective symmetric monoidal functor $Z$ from $C$ to $GrVec$ [1], where $GrVec$ is the category of graded complex vector …
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