Marcos Villagra
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 Mar25 awarded Yearling Jun30 awarded Scholar Jun30 accepted What is this integral? Jun30 comment What is this integral? thank you very much, now is crystal clear! Jun30 comment What is this integral? @night owl: thank you very much for that info!! Jun30 comment What is this integral? is it ok to write integrals like this? Jun30 comment What is this integral? yes, I just did that, and is very easy. The problem, as I wrote in my commment below, is the notation of the integral Jun30 comment What is this integral? I mean, the cosine on the integral there? Jun30 comment What is this integral? I see, but is it normal to use that kind of notation?. That's what completely misguided me. Jun30 asked What is this integral? Apr10 comment What does it mean “polynomial related”? I've make a mistake with my words. What I've meant to say was sublinear but logarithmic. It is allowed to have $n^{1/2}$ for example. Feb11 comment Linear transformations and norm my mistake was that I thought that the eigenvectors of the triangularized matrix automatically diagonalized $T$ Feb11 awarded Commentator Feb11 comment Linear transformations and norm ahh I see, crytal clear now :-) Feb11 comment Linear transformations and norm Given that $T$ can be triangularizable, it is easy to see that after diagonalizing and computing $T^\dagger T$ you get identity. But it seems that the condition $\parallel Tv\parallel\leq \parallel v\parallel$ is not being used here. Feb11 awarded Teacher Feb10 answered How Do You Actually Do Your Mathematics? Feb9 awarded Supporter Feb9 answered What does it mean “polynomial related”? Jan25 comment Complexity of verifying proofs In general, verifying the complexity of a proof belong to proof complexity. A nice place to start reading about it is the book "computational complexity: a modern approach" chapter 15 cs.princeton.edu/theory/complexity