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May 28, 2023 at 18:15 history edited Thomas Lehéricy CC BY-SA 4.0
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May 27, 2023 at 16:53 history edited Thomas Lehéricy CC BY-SA 4.0
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May 27, 2023 at 16:52 comment added Thomas Lehéricy You are correct; wikipedia lacks the hypothesis... I have updated my answer. It does weaken it even more than before.
May 27, 2023 at 16:40 comment added an_ordinary_mathematician That would be the case only for normal compact operators, right ?
May 27, 2023 at 15:58 history edited Thomas Lehéricy CC BY-SA 4.0
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May 27, 2023 at 15:42 history answered Thomas Lehéricy CC BY-SA 4.0