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Complex analysis, holomorphic functions, automorphic group actions and forms, pseudoconvexity, complex geometry, analytic spaces, analytic sheaves.

7 votes

Minimizing the modulus of a polynomial around a circle

There is another way. Every non-negative trigonometric polynomial $f$ on the circle is of the form $|q|^2$, where $q$ is an analytic polynomial. (I mean by this that $f$ is of form $\sum_{-N}^N a_n z^ …
John E. McCarthy's user avatar