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Nonexistence conjecture for HFP codes of type $\operatorname{HFP}(2t,4_{\mathbf u})$
Let an $\operatorname{HFP}(2t,4_{\mathbf u})$ -code be a Hadamard full propelinear code of the indicated type and length $4t$ . HFP-code nonexistence conjecture. There do not exist…
Conjectureopencomplex-hadamard-matrices hadamard-codes propelinear-codesarXiv posted 2 days ago

Nonexistence conjecture for HFP codes of type HFP⁡(2t,4u)\operatorname{HFP}(2t,4_{\mathbf u})HFP(2t,4u​)