℘

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When you want $\pi ^{2}\csc \left(\pi x\right)^{2}-{\frac {\pi ^{2}}{3}}$ but in 2D.

℘ in Real life.

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...$\wp (z)={\frac {1}{z^{2}}}+\sum _{\lambda \in \Lambda \setminus \{0\}}\left({\frac {1}{(z-\lambda )^{2}}}-{\frac {1}{\lambda ^{2}}}\right).$