Elliptic function
Definition

A meromorphic function is called an elliptic function, if there are two R {\displaystyle \mathbb {R} } - linear independent complex numbers ω 1, ω 2 ∈ C {\displaystyle \omega _{1},\omega _{2}\in \mathbb {C} } such that

So elliptic functions have two periods and are therefore doubly periodic functions.
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