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Università della Svizzera italiana

Multigrid methods for fractional diffusion equations

Trotti, Ken ; Krause, Rolf (Dir.) ; Donatelli, Marco (Codir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021INFO013.

Recent years have seen the rapid growth in interest towards fractional calculus. Fractional calculus plays an important role in modelling anomalous diffusion phenomena, however closed-form analytical solutions of such equations are rarely available, hence numerical estimates are needed. In this thesis we consider various fractional diffusion equations (FDEs), where different fractional ...

Consortium of Swiss Academic Libraries

Dimensional estimates for singular sets in geometric variational problems with free boundaries

De Philippis, Guido ; Maggi, Francesco

In: Journal für die reine und angewandte Mathematik (Crelles Journal), 2017, vol. 2017, no. 725, p. 217-234

Consortium of Swiss Academic Libraries

Comparison of approximate shape gradients

Hiptmair, R. ; Paganini, A. ; Sargheini, S.

In: BIT Numerical Mathematics, 2015, vol. 55, no. 2, p. 459-485

Università della Svizzera italiana

Multilevel solution strategies for unfitted finite element methods

Kothari, Hardik ; Krause, Rolf (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2020 ; 2020INFO009.

In the unfitted finite element methods, traditionally we can use Nitsche's method or the method of Lagrange multipliers to enforce the boundary/interface conditions. In this work, we present tailored multilevel methods for solving the problems stemming from either of these discretizations. Generally, multigrid methods require a hierarchy of finite element (FE) spaces which can be created...

Consortium of Swiss Academic Libraries

Wave Relations

Cattaneo, Alberto ; Mnev, Pavel

In: Communications in Mathematical Physics, 2014, vol. 332, no. 3, p. 1083-1111

Consortium of Swiss Academic Libraries

Discretization Errors in the Hybrid Finite Element Particle-in-cell Method

Thielmann, M. ; May, D. ; Kaus, B.

In: Pure and Applied Geophysics, 2014, vol. 171, no. 9, p. 2165-2184

Consortium of Swiss Academic Libraries

Notions of affinity in calculus of variations with differential forms

Bandyopadhyay, Saugata ; Sil, Swarnendu

In: Advances in Calculus of Variations, 2016, vol. 9, no. 3, p. 293-304