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Criterion of unitary similarity for upper triangular matrices in general position
upper triangular matrices general position
2010/11/8
Each square complex matrix is unitarily similar to an upper triangular matrix with diagonal entries in any prescribed order. Let A and B be upper triangular n-by-n matrices that (i) are not similar to...
On affine motions and bar frameworks in general position
Bar frameworks universal rigidity stress matrices points in general position
2010/12/8
A configuration p in r-dimensional Euclidean space is a finite collection of points (p1, . . . , pn) that affinely span Rr. A bar framework, denoted by G(p), in Rr is a simple graph G on n vertices to...