Christian Ikenmeyer

Affiliations:
  • University of Warwick, Department of Mathematics, Coventry, UK
  • University of Liverpool, Department of Computer Science, UK (former)
  • Max Planck Institute for Software Systems, Saarbrücken, Germany (former)
  • Max Planck Institute for Informatics, Saarbrücken, Germany (former)
  • Texas A&M University, College Station, TX, USA (former)
  • University of Paderborn, Institute of Mathematics, Germany (former, PhD 2012)


According to our database1, Christian Ikenmeyer authored at least 44 papers between 2011 and 2024.

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Bibliography

2024
On the Power of Border Width-2 ABPs over Fields of Characteristic 2.
Proceedings of the 41st International Symposium on Theoretical Aspects of Computer Science, 2024

Fixed-Parameter Debordering of Waring Rank.
Proceedings of the 41st International Symposium on Theoretical Aspects of Computer Science, 2024

Homogeneous Algebraic Complexity Theory and Algebraic Formulas.
Proceedings of the 15th Innovations in Theoretical Computer Science Conference, 2024

2023
All Kronecker coefficients are reduced Kronecker coefficients.
CoRR, 2023

Positivity of the symmetric group characters is as hard as the polynomial time hierarchy.
Proceedings of the 2023 ACM-SIAM Symposium on Discrete Algorithms, 2023

2022
A note on VNP-completeness and border complexity.
Inf. Process. Lett., 2022

Border complexity via elementary symmetric polynomials.
Electron. Colloquium Comput. Complex., 2022

Degree-Restricted Strength Decompositions and Algebraic Branching Programs.
Proceedings of the 42nd IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science, 2022

What is in #P and what is not?
Proceedings of the 63rd IEEE Annual Symposium on Foundations of Computer Science, 2022

2021
Karchmer-Wigderson Games for Hazard-free Computation.
Electron. Colloquium Comput. Complex., 2021

Young Flattenings in the Schur module basis.
CoRR, 2021

On the Orbit Closure Containment Problem and Slice Rank of Tensors.
Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms, 2021

On the Complexity of Evaluating Highest Weight Vectors.
Proceedings of the 36th Computational Complexity Conference, 2021

2020
On Geometric Complexity Theory: Multiplicity Obstructions Are Stronger Than Occurrence Obstructions.
SIAM J. Appl. Algebra Geom., 2020

Algebraic Branching Programs, Border Complexity, and Tangent Spaces.
Electron. Colloquium Comput. Complex., 2020

The Computational Complexity of Plethysm Coefficients.
Comput. Complex., 2020

Implementing geometric complexity theory: on the separation of orbit closures via symmetries.
Proceedings of the 52nd Annual ACM SIGACT Symposium on Theory of Computing, 2020

Search Problems in Algebraic Complexity, GCT, and Hardness of Generators for Invariant Rings.
Proceedings of the 35th Computational Complexity Conference, 2020

2019
On the Complexity of Hazard-free Circuits.
J. ACM, 2019

The Geometry of Rank Decompositions of Matrix Multiplication I: 2 × 2 Matrices.
Exp. Math., 2019

Hyperpfaffians and Geometric Complexity Theory.
CoRR, 2019

Variety Membership Testing, Algebraic Natural Proofs, and Geometric Complexity Theory.
CoRR, 2019

2018
On Algebraic Branching Programs of Small Width.
J. ACM, 2018

On the relative power of reduction notions in arithmetic circuit complexity.
Inf. Process. Lett., 2018

Generalized Matrix Completion and Algebraic Natural Proofs.
Electron. Colloquium Comput. Complex., 2018

The geometry of rank decompositions of matrix multiplication II: 3×3 matrices.
CoRR, 2018

2017
Symmetrizing tableaux and the 5th case of the Foulkes conjecture.
J. Symb. Comput., 2017

Strassen's 2x2 matrix multiplication algorithm: A conceptual perspective.
CoRR, 2017

On vanishing of Kronecker coefficients.
Comput. Complex., 2017

2016
Complexity of Linear Circuits and Geometry.
Found. Comput. Math., 2016

On the complexity of the permanent in various computational models.
CoRR, 2016

Geometric complexity theory and matrix powering.
CoRR, 2016

The geometry of rank decompositions of matrix multiplication I: 2x2 matrices.
CoRR, 2016

Rectangular Kronecker Coefficients and Plethysms in Geometric Complexity Theory.
Proceedings of the IEEE 57th Annual Symposium on Foundations of Computer Science, 2016

No Occurrence Obstructions in Geometric Complexity Theory.
Proceedings of the IEEE 57th Annual Symposium on Foundations of Computer Science, 2016

2015
The Saxl conjecture and the dominance order.
Discret. Math., 2015

Permanent versus determinant: not via saturations of monoids of representations.
CoRR, 2015

Fundamental invariants of orbit closures.
CoRR, 2015

2014
Binary Determinantal Complexity.
CoRR, 2014

2013
Deciding Positivity of Littlewood-Richardson Coefficients.
SIAM J. Discret. Math., 2013

Equations for Lower Bounds on Border Rank.
Exp. Math., 2013

Computer aided methods for lower bounds on the border rank
CoRR, 2013

Explicit lower bounds via geometric complexity theory.
Proceedings of the Symposium on Theory of Computing Conference, 2013

2011
Geometric complexity theory and tensor rank.
Proceedings of the 43rd ACM Symposium on Theory of Computing, 2011


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