On the BMV Conjecture for 2 $$\times $$ × 2 Matrices and the Exponential Convexity of the Function $${\cosh (\sqrt{at^2+b})}$$ cosh ( a t 2 + b )
Crossref DOI link: https://doi.org/10.1007/s11785-015-0513-4
Published Online: 2015-12-11
Published Print: 2017-04
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Katsnelson, Victor
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