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The matrix exponential is a matrix function on square matrices analogous to the ordinary exponential function.

4 votes

Fast Upper Triangular Matrix Exponentiation

When I teach the exponential of matrices, I tell the students that the converging series is not a practical tool for calculation. It is way better to solve the differential equation. This turns out to …
Denis Serre's user avatar
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13 votes

What is the time complexity of the matrix exponential?

The exponential of a matrix is not, in general, computable explicitly. Strictly speaking, the Complexity of Matrix Exponential does not exist. Instead, you have an approximate calculation and you are …
Denis Serre's user avatar
  • 52.3k