Several results are presented concerning when partial operator matrices of the forms
Completion of partial matrices to contractions
β Scribed by Charles R Johnson; Leiba Rodman
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 389 KB
- Volume
- 69
- Category
- Article
- ISSN
- 0022-1236
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π SIMILAR VOLUMES
Hankel partial contraction is a Hankel matrix such that not all of its entries are determined, but in which every well-defined submatrix is a contraction. We address the problem of whether a Hankel partial contraction in which the upper left triangle is known can be completed to a contraction. It is
An n Γ n real matrix is said to be totally nonpositive if every minor is nonpositive. In this paper, we are interested in totally nonpositive completion problems, that is, does a partial totally nonpositive matrix have a totally nonpositive matrix completion? This problem has, in general, a negative