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On nonnegative invariant quartics in type A
Sebastian Debus, Charu Goel, Salma Kuhlmann, Cordian Riener
A semidefinite programming hierarchy for covering problems in discrete geometry
Cordian Riener, Jan Rolfes, Frank Vallentin
Attitudes towards mathematics, achievement, and drop-out intentions among STEM and Non-STEM students in Norway
Gabriella Óturai, Cordian Riener, Sarah E Martiny
Optimization of trigonometric polynomials with crystallographic symmetry and spectral bounds for set avoiding graphs
Evelyne Hubert, Tobias Metzlaff, Philippe Moustrou, Cordian Riener
Reflection groups and cones of sums of squares
Sebastian Debus, Cordian Riener
Symmetric SAGE and SONC forms, exactness and quantitative gaps
Philippe Moustrou, Cordian Riener, Theosten Theobald, Hugues Verdure
The wonderful geometry of the Vandermonde map
Jose Acevedo, Grigoriy Blekherman, Sebastian Debus, Cordian Riener
Equivariant algebraic and semi-algebraic geometry of infinite affine space
Mario Kummer, Cordian Riener
Linear slices of hyperbolic polynomials and positivity of symmetric polynomial functions
Cordian Riener, Robin Schabert
Orbit Spaces of Weyl Groups Acting on Compact Tori - A Unified and Explicit Polynomial Description
Evelyne Hubert, Tobias Metzlaff, Cordian Riener