Kreǐn's trace formula and the spectral shift function.
A series transformation formula and related polynomials.
Harmonic number identities via Euler's transform.
The Euler series transformation and the binomial identities of Ljunggren, Munarini and Simons.
Consecutive evaluation of Euler sums.
Logaritmos y potencias imaginarias de operadores sobre espacios de Hilbert.
Integral representation of functions on sectors, functional calculus and norm estimates.
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