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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

Université de Fribourg

Long-ranged Cu-based order with $$d_{z^2}$$ orbital character at a YBa2Cu3O7/ manganite interface

Gaina, Roxana ; Nicholson, Christopher W. ; Rumo, Maxime ; Sarkar, Subhrangsu ; Khmaladze, Jarji ; Paris, Eugenio ; Tseng, Yi ; Zhang, Wenliang ; Asmara, Teguh C. ; McNally, Daniel ; Piamonteze, Cinthia ; Weschke, Eugen ; Schmitt, Thorsten ; Monney, Claude ; Bernhard, Christian

In: npj Quantum Materials, 2021, vol. 6, no. 1, p. 12

The interplay of nearly degenerate orders in quantum materials can lead to a myriad of emergent phases. A prominent case is that of the high-Tc cuprates for which the relationship between superconductivity and a short-ranged, incommensurate charge density wave in the CuO2 planes involving the dx2−y2 orbitals (Cu-CDW) is a subject of great current interest. Strong modifications of the...

Università della Svizzera italiana

Approximation algorithms for survivable network design

Jabal Ameli, Afrouz ; Grandoni, Fabrizio (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021INFO005.

Many relevant discrete optimization problems are believed to be hard to solve efficiently (i.e. they cannot be solved in polynomial time unless P=NP). An approximation algorithm is one of the ways to tackle these hard optimization problems. These algorithms have polynomial running time and compute a feasible solution whose value is within a proven factor (approximation factor) of the optimal...

Università della Svizzera italiana

Approximation algorithms for two-dimensional geometric packing problems

Gálvez, Waldo ; Grandoni, Fabrizio (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2019 ; 2019INFO013.

There are a lot of natural problems arising in real life that can be modeled as discrete optimization problems. Unfortunately many of them are believed to be hard to solve efficiently (i.e. they cannot be solved in polynomial time unless P=NP). An approximation algorithm is one of the ways to tackle these hard optimization problems. These algorithms have polynomial running time and guarantee a...