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Feb 17, 2022 at 17:09 vote accept Carlo Beenakker
Feb 17, 2022 at 16:49 comment added David E Speyer This can be thought of as an interlacing theorem for singular values. math.stackexchange.com/questions/1382142/…
Feb 17, 2022 at 16:30 history answered Noam D. Elkies CC BY-SA 4.0