activity
20182024
most citedOn Christol's conjecture

15 citations · 31 across the 7 of their papers we have counts for

collaborators

7 papers

math.CO2024

Determinant evaluations inspired by Di Francesco's determinant for twenty-vertex configurations

Christoph Koutschan, Christian Krattenthaler, Michael Schlosser

In his work on the twenty vertex model, Di Francesco [Electron. J. Combin. 28(4) (2021), Paper No. 4.38] found a determinant formula for the number of configurations in a specific…

math.CA2023

Collisionless shock region of the KdV equation and an entry in Gradshteyn and Ryzhik

Tewodros Amdeberhan, Victor Moll, John Lopez Santander +2

The long-time behavior of solutions to the initial value problem for the Korteweg-de Vries equation on the whole line, with general initial conditions has been described uniformly…

math.CO2023★ 1 cited

Diagonally symmetric alternating sign matrices

Roger E. Behrend, Ilse Fischer, Christoph Koutschan

The enumeration of diagonally symmetric alternating sign matrices (DSASMs) is studied, and a Pfaffian formula is obtained for the number of DSASMs of any fixed size, where the entr…

math.AG2020

Diagonals of rational functions: from differential algebra to effective algebraic geometry (unabridged version)

Y. Abdelaziz, S. Boukraa, C. Koutschan +1

We show that the results we had obtained on diagonals of nine and ten parameters families of rational functions using creative telescoping, yielding modular forms expressed as pull…

math.NT2020★ 15 cited

On Christol's conjecture

Y. Abdelaziz, C. Koutschan, J-M. Maillard

We show that the unresolved examples of Christol's conjecture and , are indeed diagon…

math-ph2019★ 7 cited

Heun functions and diagonals of rational functions (unabridged version)

Y. Abdelaziz, S. Boukraa, C. Koutschan +1

We provide a set of diagonals of simple rational functions of three and four variables that are squares of Heun functions. These Heun functions obtained through creative telescopin…