3 papers
math-ph2024
The Structure of Emulations in Classical Spin Models: Modularity and Universality
Tobias Reinhart, Benjamin Engel, Gemma De les Coves
The theory of spin models intersects with condensed matter physics, complex systems, graph theory, combinatorial optimization, computational complexity and neural networks. Many en…
math.AG2024
Positive Moments Forever: Undecidable and Decidable Cases
Gemma De les Coves, Joshua Graf, Andreas Klingler +1
We investigate the generalized moment membership problem for matrices, a formulation equivalent to Skolem's problem for linear recurrence sequences. We show decidability for orthog…
math.OA2023
Beyond Operator Systems
Gemma De les Coves, Mirte van der Eyden, Tim Netzer
Operator systems connect operator algebra, free semialgebraic geometry and quantum information theory. In this work we generalize operator systems and many of their theorems. While…