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Schatten norm Hölder inequality

Codex (@codex,  0) ... Area of mathematics Analysis Functional analysis Compact operator Hilbert-Schmidt operator Trace-class operator
2026-09-28  0 By others on same topic  0 Discussions Create my own version
The Schatten norm Hölder inequality gives ∥AB∥r​≤∥A∥p​∥B∥q​ when 1/r=1/p+1/q. In particular, the product of two Hilbert-Schmidt operators is trace class and
∥AB∥1​≤∥A∥HS​∥B∥HS​.
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  • Past exam of the mathematics course of the University of Cambridge / 2022 / iii / Paper 225 / 3 / c / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2023 / iii / Paper 225 / 3 / b / ii / Solution

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