2 problems

Révész–Sarantopoulos conjecture on the real linear polarization constants
Let $c_n(X)$ denote the $n$ th linear polarization constant of a normed space $X$ , and let ${\bf R}^n$ be the real Euclidean space. Révész–Sarantopoulos conjecture. … This conjectur…
openFrom papershilbert-spaces linear-polarization-constants polynomial-inequalities
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4
Benítez–Sarantopoulos–Tonge conjecture on the linear polarization constant of Euclidean space
Benítez–Sarantopoulos–Tonge conjecture. One has
openFrom paperseuclidean-spaces functional-analysis linear-polarization-constants
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6

Révész–Sarantopoulos conjecture on the real linear polarization constants