In this paper, we develop a family of third order asymptotic-preserving (AP) and asymptotically accurate (AA) diagonally implicit Runge–Kutta (DIRK) time discretization methods for the stiff hyperbolic relaxation systems kinetic Bhatnagar–Gross–Krook (BGK) model in semi-Lagrangian (SL) setting. The are constructed based on an accuracy analysis SL scheme BGK limiting fluid regime when Knudsen nu...

This work generalizes the additively partitioned Runge-Kutta methods by allowing for different stage values as arguments of different components of the right hand side. An order conditions theory is developed for the new family of generalized additive methods, and stability and monotonicity investigations are carried out. The paper discusses the construction and properties of implicit-explicit ...

AA nn ii nn tt ee rr vv ii ee ww ww hh ii tt DD ii rr kk KK nn ee mm ee yy ee rr Ho avuto modo di conscere Dirk Knemeyer la scorsa estate in occasione de “Le Frontiere dell’Interazione”, evento che ho coorganizzato in Università Bicocca a Milano. Dirk e’ un acuto pensatore, grande esperto delle tecnologie web-related e un eccellente oratore. Attraverso l’intervista che voglio ora condurvi alla ...

Michael Esfeld & Dirk-André Deckert, A Minimalist Ontology of the Natural World. New York/Abingdon: Routledge, 2018.

A monopolist sells informative experiments to heterogeneous buyers who face a decision problem. Buyers differ in their prior information, and hence in their willingness to pay for additional signals. The monopolist can profitably offer a menu of experiments. Even under costless acquisition and degrading of information, the optimal menu is quite coarse. The seller offers at most two experiments,...