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On a Class of Totally Unimodular Matrices

โœ Scribed by Mihalis Yannakakis


Book ID
120986862
Publisher
INFORMS
Year
1985
Tongue
English
Weight
975 KB
Volume
10
Category
Article
ISSN
0364-765X

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๐Ÿ“œ SIMILAR VOLUMES


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โœ A. Tamir ๐Ÿ“‚ Article ๐Ÿ“… 1976 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 431 KB

## Abstract Conditions for a matrix to be totally unimodular, due to Camion, are applied to extend and simplify proofs of other characterizations of total unimodularity.

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We say that a totally unimodular matrix is k-totally unimodular (k-TU), if every matrix obtained from it by setting to zero a subset of at most k entries is still totally unimodular. We present the following results. (i) A matrix is restricted unimodular if and only if it is 3-TU, (ii) for a 2-TU m

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