Recent content by Mathsadness

  1. M

    I Definiteness of a nonsymmetric matrix

    Can you please elaborate a bit? Wouldn't the process I mentioned above apply i.e making the matrix symmetric first and then use the usual procedure?
  2. M

    I Definiteness of a nonsymmetric matrix

    There is no specific example but my attempt at one would be to make the non-symmetric matrix symmetric. Then we would be able the usual formulas as designed for symmetric matrices. Is this how it works? Alternatively, do I just calculate the Eigen values without making it symmetric? I don't...
  3. M

    I Why is [0,1] compact in the case of a collection of open neighborhoods?

    Can you explain the part why 1/n does not converge to a point in (0,1)? Is it because we define limit as |1/n-0|<e, which boils down to 1/n<e which can be made arbitrarily small by archimedean property? Essentially saying that 1/n=0. As 0 is not in (0,1) it converges in [0,1]?
  4. M

    I Why is [0,1] compact in the case of a collection of open neighborhoods?

    For (0,1), the collection of neighborhoods N_e of q from (0,1) is an open cover. However, there exists e>0 such that it will not have a finite sub cover. Let us take e=0.5*min{|p-q|}, where p=/=q and both are from (0,1). I am not sure if the construction of e here is right, please correct me if...
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