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 Jul20 asked Problem in Skew Symmetric Matrix Jul20 comment Lattice Reduction of two matrix Thank you all for the effort. Now I am trying to write LLL algorithm in Sage to solve the problem. Jul15 asked Lattice Reduction of two matrix Jul3 comment Discrete Fourier Transform Matrix (DFT) Thanks for the information. What is about n=5, 6,7, 8? Jul2 revised Problem in Matrix edited tags Jul2 asked Problem in Matrix Jul1 asked Discrete Fourier Transform Matrix (DFT) Jun30 comment Expectation of an event Thanks for the solution. It works nicely. Just one quarry. In the recursive formula of $E[k]$, why did you add 1? That is $E[k]=1 + \ldots$. Jun30 asked Help need in Mathematica or Sage Jun28 awarded Editor Jun28 revised Expectation of an event added 126 characters in body Jun28 asked Expectation of an event Jun28 comment Expectation of an event I take three random integer r,s,t in [1,1000] with replacement. And 1. Set A[r]=1 2. Set A[s]=1 if A[t]=0 3. A[t]=1 if A[s]=0. Jun25 asked Expectation of an event Jun24 comment Commutative Matrix Problem Thanks for the details. Jun20 comment Commutative Matrix Problem It is clear that polynomial in B must be commutative with B. Will you kindly explain why converse is true? Jun20 comment Commutative Matrix Problem Will you kindly give the details? Jun19 awarded Student Jun19 comment Commutative Matrix Problem Thanks for LaTeX. Yes, identity or zero matrix satisfies the condition but I want to find general form. Jun19 asked Commutative Matrix Problem