Some graph theoretical characterizations of positive definite symmetric quasi-Cartan matrices
Abarca, M. · Rivera, D.
Original · EN
We present some graphical characterizations of positive definite symmetric quasi-Cartan matrices of Dynkin type Aₙ and Dₙ. Our proofs are constructive, purely graph theoretical, and almost self-contained in the sense that they rely on the classical inflations method only.
English translation
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