Ernest A
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 Apr 2 awarded Critic Apr 1 accepted How to determine the number of free variables in a nonlinear system? Mar 31 asked How to determine the number of free variables in a nonlinear system? Mar 26 awarded Curious Mar 25 accepted Permutation of rows with repetition Mar 25 revised Permutation of rows with repetition changed example to make it more general Mar 25 asked Permutation of rows with repetition Feb 9 revised Derivative with respect to vectors related through a matrix fixed typo Feb 8 asked Derivative with respect to vectors related through a matrix Dec 22 awarded Informed Dec 19 accepted What can we say about the trace of this matrix? Dec 19 comment What can we say about the trace of this matrix? Thanks. Yes I meant $E$ and $\Lambda$. Corrected. Dec 19 revised What can we say about the trace of this matrix? typo Dec 19 asked What can we say about the trace of this matrix? Aug 18 comment Formula for the distance from a point to a straight line in $R^n$ Yes, now I see it's the same thing. Thanks. Aug 18 awarded Editor Aug 18 revised Formula for the distance from a point to a straight line in $R^n$ fixed formatting Aug 18 asked Formula for the distance from a point to a straight line in $R^n$ Jun 13 awarded Tumbleweed Aug 1 accepted Derivative of $f(x) = a \sum_{i=1}^x 10^{x-i}$