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Università della Svizzera italiana

New shape control tools for rational Bézier curve design

Ramanantoanina, Andriamahenina ; Hormann, Kai

In: Computer aided geometric design, 2021, vol. 88, p. 11

Bézier curves are indispensable for geometric modelling and computer graphics. They have numerous favourable properties and provide the user with intuitive tools for editing the shape of a parametric polynomial curve. Even more control and flexibility can be achieved by associating a shape parameter with each control point and considering rational Bézier curves, which comes with the...

Università della Svizzera italiana

A fast direct solver for nonlocal operators in wavelet coordinates

Harbrecht, Helmut ; Multerer, Michael

In: Journal of computational physics, 2021, vol. 428, p. 15 p

In this article, we consider fast direct solvers for nonlocal operators. The pivotal idea is to combine a wavelet representation of the system matrix, yielding a quasi- sparse matrix, with the nested dissection ordering scheme. The latter drastically reduces the fill-in during the factorization of the system matrix by means of a Cholesky decomposition or an LU decomposition, respectively. This...

Consortium of Swiss Academic Libraries

Higher Abelian Dijkgraaf-Witten Theory

Monnier, Samuel

In: Letters in Mathematical Physics, 2015, vol. 105, no. 9, p. 1321-1331

Consortium of Swiss Academic Libraries

Reflection Positivity for Majoranas

Jaffe, Arthur ; Pedrocchi, Fabio

In: Annales Henri Poincaré, 2015, vol. 16, no. 1, p. 189-203

Consortium of Swiss Academic Libraries

Lagrangian Reductions and Integrable Systems in Condensed Matter

Gay-Balmaz, François ; Monastyrsky, Michael ; Ratiu, Tudor

In: Communications in Mathematical Physics, 2015, vol. 335, no. 2, p. 609-636

Consortium of Swiss Academic Libraries

A Construction of Observables for AKSZ Sigma Models

Mnev, Pavel

In: Letters in Mathematical Physics, 2015, vol. 105, no. 12, p. 1735-1783

Consortium of Swiss Academic Libraries

Decoupling with Random Quantum Circuits

Brown, Winton ; Fawzi, Omar

In: Communications in Mathematical Physics, 2015, vol. 340, no. 3, p. 867-900