# Upcoming Seminars & Events

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##### A Lefschetz principle in non-archimedean geometry

PLEASE CLICK ON COLLOQUIUM TITLE FOR COMPLETE ABSTRACT: The "Lefschetz Principle" is the informal idea that for geometric questions about algebraic varieties over fields of characteristic 0, it is often sufficient to assume the ground field is the complex numbers (where analytic tools are available).

##### From Stochastic Modeling to Fractional Modeling - New Tools in Computational Science & Engineering

##### Regular operator mappings and multivariate geometric means

We introduce the notion of regular operator mappings of several variables generalising the notion of spectral function. This setting is convenient for studying maps more general than what can be obtained from the functional calculus, and it allows for Jensen type inequalities and multivariate non-commutative perspectives.