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20152026
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math.DG2015

On a discretization of confocal quadrics. I. An integrable systems approach

Alexander I. Bobenko, Wolfgang K. Schief, Yuri B. Suris +1

Confocal quadrics lie at the heart of the system of confocal coordinates (also called elliptic coordinates, after Jacobi). We suggest a discretization which respects two crucial pr…