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 Constituent
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Jan
15
revised The relation between $\inf_{R\in \mathsf{U}_n} \left\Vert A - BR\right\Vert^2_F$ and $\left\Vert AA^*-BB^*\right\Vert$
corrected little errors in math
Jan
14
revised The relation between $\inf_{R\in \mathsf{U}_n} \left\Vert A - BR\right\Vert^2_F$ and $\left\Vert AA^*-BB^*\right\Vert$
edited title
Jan
14
revised The relation between $\inf_{R\in \mathsf{U}_n} \left\Vert A - BR\right\Vert^2_F$ and $\left\Vert AA^*-BB^*\right\Vert$
edited body; edited title
Jan
14
asked The relation between $\inf_{R\in \mathsf{U}_n} \left\Vert A - BR\right\Vert^2_F$ and $\left\Vert AA^*-BB^*\right\Vert$
Dec
21
awarded  Constituent
Dec
8
awarded  Caucus
Sep
30
awarded  Explainer
Sep
3
answered Spectral norm of a Hadamard product
Sep
3
revised Spectral norm of a Hadamard product
edited body
Aug
28
revised Prove that Frobenius matrix norm is compatible with the vector norm
added 1 character in body
Aug
19
answered How to prove this inequality without using Muirhead's inequality?
Jul
13
awarded  Yearling
Jul
11
revised IMO 2014 problem 3, first day
added 7 characters in body
Jul
11
revised IMO 2014 problem 3, first day
added 7 characters in body
Jul
11
answered IMO 2014 problem 3, first day
Jul
2
awarded  Curious
Jul
2
revised Spectral norm of a Hadamard product
added 30 characters in body
Jul
2
asked Spectral norm of a Hadamard product
Jun
20
revised QM-AM-GM-HM proof help
added 274 characters in body
Jun
20
comment QM-AM-GM-HM proof help
@jonnytan999 The way I know to prove this claim, requires taking one derivative, though. Do you need an elementary solution (i.e., without any calculus involved)?