12 citations · 18 across the 12 of their papers we have counts for
13 papers
On the -vectors of -multichain subdivisions
Shaheen Nazir
For a poset and an integer , let be a collection of all -multichains in . Corresponding to each strictly increasing map , there is a…
On the homeomorphism and homotopy type of complexes of multichains
Shaheen Nazir, Volkmar Welker
In this paper we define and study for a finite partially ordered set P a class of simplicial complexes on the set P_r of r-element multichains from P. The simplicial complexes depe…
On $\g$- and local $\g$-Vectors of the Interval Subdivision
Imran Anwar, Shaheen Nazir
We show that the $\g$-vector of the interval subdivision of a simplicial complex with a nonnegative and symmetric -vector is nonnegative. In particular, we prove that such $\g$-…
The - and -vectors of Interval Subdivisions
Imran Anwar, Shaheen Nazir
The interval subdivision Int of a simplicial complex was introduced by Walker. We give the complete combinatorial description of the entries of the transformation matrices…
The equivariant cohomology of weighted flag orbifolds
Haniya Azam, Shaheen Nazir, Muhammad Imran Qureshi
We describe the torus-equivariant cohomology of weighted partial flag orbifolds of type . We establish counterparts of several results known for the partial flag…
An Efficient Algebraic Criterion for Shellability
Imran Anwar, Zunaira Kosar, Shaheen Nazir
In this paper, we give a new and efficient algebraic criterion for the pure as well as non-pure shellability of simplicial complex over [n]. We also give an algebraic character…