Cordian Riener

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UiT Norges arktiske universitet

Norway

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Professor Cordian Riener is a faculty member at UiT Norges arktiske universitet in Norway. His research areas include stable and hyperbolic polynomials, group theory, and optimization, with a particular focus on the connections between mathematics and its applications in STEM education. Recent publications include contributions to the fields of polynomial theory and the study of symmetry in mathematical structures.

Recent Grants

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Symmetry in Algorithmic and Quantitative Real Algebraic Geometry

Open Date: 2018-03-01

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POEMA

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Articles (13)

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2026

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2025

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2025

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2024

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2023

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2023

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2022

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2022

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2021

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2021

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2020

Collaborators (3)

Gabriella Óturai

Associate professor

UiT Norges arktiske universitet

NORWAY

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Thorsten Theobald

Professor

Goethe-Universität

GERMANY

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Sebastian Debus

Chemnitz University of Technology

GERMANY

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Cordian Riener

Research Interests

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About

Recent Grants

Articles (13)

Constructively describing orbit spaces of finite groups by few inequalities

Optimization of trigonometric polynomials with crystallographic symmetry and spectral bounds for set avoiding graphs

On nonnegative invariant quartics in type A

Slices of Stable Polynomials and Connections to the Grace-Walsh-Szeg\H{o} Theorem

Orbit Spaces of Weyl Groups Acting on Compact Tori: A Unified and Explicit Polynomial Description

Linear slices of hyperbolic polynomials and positivity of symmetric polynomial functions

Reflection groups and cones of sums of squares

Attitudes towards mathematics, achievement, and drop-out intentions among STEM and Non-STEM students in Norway

Symmetry Reduction in AM/GM-Based Optimization

Vandermonde Varieties, Mirrored Spaces, and the Cohomology of Symmetric Semi-algebraic Sets

Symmetric Non-Negative Forms and Sums of Squares

Symmetric ideals, Specht polynomials and solutions to symmetric systems of equations

On the Isotypic Decomposition of Cohomology Modules of Symmetric Semi-algebraic Sets: Polynomial Bounds on Multiplicities

Collaborators (3)

Gabriella Óturai

Thorsten Theobald

Sebastian Debus

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