17 citations · 33 across the 14 of their papers we have counts for
Showing 2025Show all
3 papers · 1 filter
math.NT2025
Reducible modular differential equations, Jacobi pole divisors, and supersingular lifts
Khalil Besrour, Hicham Saber, Abdellah Sebbar
We study the reducible parameter values of a second-order modular differential equation for the full modular group and show that their pole data is controlled by a single polynomia…
math.NT2025
Higher Schwarzian, quasimodular forms and equivariant functions
Hicham Saber, Abdellah Sebbar
The Schwarzian derivative plays a fundamental role in complex analysis, differential equations, and modular forms. In this paper, we investigate its higher-order generalizations, k…
math.CO2025
On a Conjecture Concerning the Complementary Second Zagreb Index
Hicham Saber, Tariq Alraqad, Akbar Ali +2
The complementary second Zagreb index of a graph is defined as , where denotes the degree of a vertex in and…