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9 September 2019 An infinite family of two-distance tight frames
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Abstract
The relationship between equiangular tight frames and strongly regular graphs has been known for several years. This relationship has been exploited to construct many of the latest examples of new strongly regular graphs. Recently it was shown that there is a similar relationship between two-distance tight frames and strongly regular graphs. In this paper we present a new tensor like construction of two-distance tight frames, and hence a family of strongly regular graphs. While graphs with these parameters were known to exist, this new construction is very simple, requiring only the existence of an affine plane, whereas the original constructions often require more complicated objects such as generalized quadrangles.
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Nicholas P. Brown and John Jasper "An infinite family of two-distance tight frames", Proc. SPIE 11138, Wavelets and Sparsity XVIII, 111381D (9 September 2019); https://doi.org/10.1117/12.2528878
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