Sufficient conditions for positive definiteness of tridiagonal matrices revisited
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- Anđelić, M. & da Fonseca, C.M. Positivity (2011) 15: 155. doi:10.1007/s11117-010-0047-y
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We review several sufficient conditions for the positive definiteness of a tridiagonal matrix and propose a different approach to the problem, recalling and comprising little-known results on chain sequences.