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math.FA2021★ 2 cited
Certifying the novelty of equichordal tight fusion frames
Matthew Fickus, Benjamin R. Mayo, Cody E. Watson
An equichordal tight fusion frame (ECTFF) is a finite sequence of equi-dimensional subspaces of a finite-dimensional Hilbert space that achieves equality in Conway, Hardin and Sloa…
math.FA2017
A brief introduction to equi-chordal and equi-isoclinic tight fusion frames
Matthew Fickus, John Jasper, Dustin G. Mixon +1
Equi-chordal and equi-isoclinic tight fusion frames (ECTFFs and EITFFs) are both types of optimal packings of subspaces in Euclidean spaces. In the special case where these subspac…