activity
20232026
most citedOn Cohen-Macaulay non-prime collections of cells

3 citations · 6 across the 8 of their papers we have counts for

collaborators

8 papers

cs.HC2026

The Accessibility Capability Boundary: Operational Limits and Expansion Potential of AI-Generated Browser-Native Accessibility Systems

Rizwan Jahangir, Daisuke Ishii

As large language models (LLMs) demonstrate increasing competence in synthesizing functional user interfaces, a fundamental question emerges in accessibility computing: \textit{how…

cs.CR2026

Explainable PQC: A Layered Interpretive Framework for Post-Quantum Cryptographic Security Assumptions

Daisuke Ishii, Rizwan Jahangir

This paper studies how post-quantum cryptographic (PQC) security assumptions can be represented and communicated through a structured, layered framework that is useful for technica…

math.CO2026

Canonical Lattices of Integer Relations Associated to Rational Fans: Wall Generation and a Two-Step Support Filtration

Rizwan Jahangir, Daisuke Ishii

We study the lattice of integer relations among the primitive ray generators of a rational fan , from an intrinsic, co…

math.AG2025

Combinatorial Cycle Classes in the Intersection Cohomology of Projective Toric Varieties

Rizwan Jahangir, Daisuke Ishii

We investigate cycle-class realizations inside the combinatorial intersection cohomology for fans developed by Barthel, Brasselet, Fieseler, and Kaup (BBFK). For projective toric v…

math.AC2024

Collections of cells, binomial ideals and combinatorics

Carmelo Cisto, Rizwan Jahangir, Francesco Navarra

In this paper we provide a description of the package \textit{PolyominoIdeals} for \textit{Macaulay2} that allows to deal with collections of cells, polyominoes and related binomia…

math.AC2024★ 3 cited

On Cohen-Macaulay non-prime collections of cells

Carmelo Cisto, Rizwan Jahangir, Francesco Navarra

In this paper we investigate Cohen-Macaulayness, Gorensteinness and the Hilbert-Poincaré series for some classes of non-prime collections of cells. In particular, we show that all…

math.CO2023★ 3 cited

Shellable simplicial complex and switching rook polynomial of frame polyominoes

Rizwan Jahangir, Francesco Navarra

Let be a frame polyomino, a new kind of non-simple polyomino. In this paper we study the -polynomial of in terms of the switching rook polynomial…

math.CO2023

On Cohen-Macaulay posets of dimension two and permutation graphs

Rizwan Jahangir, Dharm Veer

We characterize Cohen-Macaulay posets of dimension two; they are precisely the shellable and strongly connected posets of dimension two. We also give a combinatorial description of…