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Questions about modular forms and related areas

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The mystery of the jumps of functions with the prescribed jumps: Eisenstein series and hidde...

Say that a function $f(t)$ “changes only by jumps” if $f(t) + \text{const} = C ∑_k j_k θ(t-t_k)$ for a certain constant $C$. Here $θ(t)$ is the Heaviside step function which has a jump 1 at $t=0$ (it …
Ilya Zakharevich's user avatar