Stanislav Popovych

most citedPositivstellensatz and flat functionals on path *-algebras

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math.RT2009

The Spectral Problem and Algebras Associated with Extended Dynkin Graphs

Stanislav Popovych

The Spectral Problem is to describe possible spectra $σ (A_{j})$ for an irreducible $n$ -tuple of Hermitian operators s.t. $A_{1} + ... + A_{n}$ is a scalar operator. In case when $m_j= | σ(A_…