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math.CO2022
Equi-isoclinic subspaces, covers of the complete graph, and complex conference matrices
Matthew Fickus, Joseph W. Iverson, John Jasper +1
In 1992, Godsil and Hensel published a ground-breaking study of distance-regular antipodal covers of the complete graph that, among other things, introduced an important connection…
math.FA2022
Diagonals of self-adjoint operators I: compact operators
Marcin Bownik, John Jasper
Given a self-adjoint operator on a separable infinite-dimensional Hilbert space we study the problem of characterizing the set of all possible diagonals of .…