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Calculating Determinants of Block Matrices

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arxiv 1112.4379 v1 pith:LE5YPJIJ submitted 2011-12-16 math.RA cs.NAmath.NA

classification math.RAcs.NAmath.NA
keywords blocksdeterminantsblockdeterminantmatrixmethodallowsanalytic
verification ladder T0 review T1 audit T2 compute T3 formal

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This paper presents a method for expressing the determinant of an N {\times} N complex block matrix in terms of its constituent blocks. The result allows one to reduce the determinant of a matrix with N^2 blocks to the product of the determinants of N distinct combinations of single blocks. This procedure proves useful in the analytic description of physical systems with multiple discrete variables, as it provides a systematic method for evaluating determinants which might otherwise be analytically intractable.

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Cited by 2 Pith papers

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