La Belle Noiseuse
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 Feb 23 awarded Popular Question May 3 comment Sparse subset of a vector space and entanglement Please don't write clearly vague or vaguely clear comments. If you don't have eyes just to confirm you that I wanted concrete mathematical ideas or examples not your wise advice May 3 asked Sparse subset of a vector space and entanglement Oct 8 accepted why non orthogonal states are indistinguishable? Oct 7 accepted A question on partial trace and density matrix computation Oct 7 revised Dimension of separable state deleted 144 characters in body Oct 7 accepted Dimension of separable state Oct 7 comment Intuition on positive-operator valued measures (POVM) I think they are positive means they are positive definite? Oct 5 awarded Teacher Oct 4 asked why non orthogonal states are indistinguishable? Sep 2 comment A question on partial trace and density matrix computation then it must be a $2\times 2$ matrix but in the book it is $3\times 2$ matrix Sep 2 asked A question on partial trace and density matrix computation Sep 1 comment Dimension of separable state Thanks! I am trying to understand your point Sep 1 comment Dimension of separable state ah! algebraic geometry is everywhere! but I am such a poor fellow who doesn't understand, Thanks but sorry with my mathematics background I don't understand your answer Sep 1 revised Dimension of separable state added 7 characters in body Sep 1 awarded Scholar Sep 1 revised $\exp(i\alpha\hat {\bf n}\cdot{\bf \sigma} )=\cos\alpha I+i(\hat {\bf n}\cdot{\bf \sigma})\sin\alpha$ edited title Sep 1 accepted $\exp(i\alpha\hat {\bf n}\cdot{\bf \sigma} )=\cos\alpha I+i(\hat {\bf n}\cdot{\bf \sigma})\sin\alpha$ Sep 1 comment $\exp(i\alpha\hat {\bf n}\cdot{\bf \sigma} )=\cos\alpha I+i(\hat {\bf n}\cdot{\bf \sigma})\sin\alpha$ @gj255 Thank you for the reply Sep 1 asked Dimension of separable state