188 citations · 1.3k across the 84 of their papers we have counts for
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math.CO2012
Analytic aspects of the circulant Hadamard conjecture
Teodor Banica, Ion Nechita, Jean-Marc Schlenker
We investigate the problem of counting the real or complex Hadamard matrices which are circulant, by using analytic methods. Our main observation is the fact that for $|q_0|=...=|q…
math.CO2012
Almost Hadamard matrices: the case of arbitrary exponents
Teodor Banica, Ion Nechita
In our previous work, we introduced the following relaxation of the Hadamard property: a square matrix is called "almost Hadamard" if is orthog…
math.CO2012
Almost Hadamard matrices: general theory and examples
Teodor Banica, Ion Nechita, Karol Zyczkowski
We develop a general theory of "almost Hadamard matrices". These are by definition the matrices having the property that is orthogonal, and is…