Case number 16

The non-integrabel pfaffian problem ydx - xdy + k dz = 0 Real part of the Hankel function Real part surface Real part surface
Real part of a theta series with explanatory plaque Real part surface of e^z Surface of the elliptic integral of 3. type Surface of the elliptic sigma function
Real part of the Weierstraß p-function Imaginary part of the Weierstraß  p-function Weierstraß p'-function

The corresponding bottom case is: Case number U 16

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