Strengthened Fourier-type -operator Clarkson inequality conjecture
Let be a Hilbert space, let denote the Schatten -class, and define . Let . The strengthened Fourier-type conjecture. For ,
For , the inequality is reversed. The source introduces this as a replacement conjecture after reporting that the preceding Fourier-type conjecture is false; no resolution of the strengthened assertion is supplied.
References
Primary source
Teng Zhang, “Clarkson–McCarthy type inequalities, part I: _p–_p and _q–_p Schatten p-estimates”, arXiv:2410.21961 (2026).
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