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Computing Determinants by Double-Crossing

Deanna Leggett, John Perry and Eve Torrence
The College Mathematics Journal
Vol. 42, No. 1 (January 2011), pp. 43-54
DOI: 10.4169/college.math.j.42.1.043
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Page Count: 12
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Computing Determinants by Double-Crossing
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Abstract Dodgson’s method of computing determinants is attractive, but fails if an interior entry of an intermediate matrix is zero. This paper reviews Dodgson’s method and introduces a generalization, the double-crossing method, that provides a workaround for many interesting cases.

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