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math.FA2026
A generalization of Frenkel's formula
Shmuel Friedland
We generalize Frenkel's integral formula for traces of operators to operators. The resulting formula holds for bounded self-adjoint positive operators and -Schatten class of com…
math.RT2026
Complete invariants for simultaneous similarity
Klaus Bongartz, Shmuel Friedland
Always dealing with an arbitrary field we consider the variety under the action of by simultaneous similarity. We define discrete and continuous inva…