Summary
The so-called ‘Gauss-Jordan’ procedure for inverting matrices has been described in many papers and is well known. The present paper gives an unusual approach to this method insofar as the inverse is obtained by repeated application of a certain non-similarity transformation to the original matrix. Of course this transformation is related to the Gauss elimination process, but formally has rather the character of an exchange of components in two vector spaces.
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Rutishauser, H. Zur Matrizeninversion nach Gauss-Jordan. Journal of Applied Mathematics and Physics (ZAMP) 10, 281–291 (1959). https://doi.org/10.1007/BF01600606
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DOI: https://doi.org/10.1007/BF01600606