Consider a unitary (up to scaling) submatrix of the Fourier matrix with rows indexed by \mathcal{I} and columns indexed by \mathcal{J}. From the column index set \mathcal{J} we construct a graph \mathcal{G} so that the row index set \mathcal{I} determines a max-clique. Interpreting \mathcal{G} as coming from an association scheme gives certain bounds on the clique number, which has possible applications to Fuglede's conjecture on spectral and tiling sets. © 2018 IEEE.

Aditya Siripuram

Department of Electrical Engineering

B. Osgood

Indian Institute of Technology Hyderabad (IITH) is a premier institute of science and technology established in 2008. IITH has been consistently ranked in the&nbsp;<a href="https://iith.ac.in/reports/" rel="noopener noreferrer">top 10 institutes</a>&nbsp;in India for Engineering&nbsp;<a href="https://www.nirfindia.org/2021/EngineeringRanking.html" rel="noopener noreferrer" target="_blank">according to NIRF</a>&nbsp;making it one of the most coveted schools for science and technology in the country.

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Journal	Data powered by TypesetIEEE International Symposium on Information Theory - Proceedings
Publisher	Data powered by TypesetInstitute of Electrical and Electronics Engineers Inc.
ISSN	21578095