Saif Ullah

In this study, we use DFT calculations to investigate the electronic and structural properties of MoX $_{2}$ (X = S, Se, Te) monolayers doped with substitutional Sb atoms, with a cent…

cond-mat.mtrl-sci2020★ 22 cited

Electronic properties of substitutional impurities in graphene-like C $_{2}$ N, $t g$ -C $_{3}$ N $_{4}$ , and $h g$ -C $_{3}$ N $_{4}$

Saif Ullah, Pablo A. Denis, Marcos G. Menezes +2

We study the electronic and structural properties of substitutional impurities of graphenelike nanoporous materials C $_{2}$ N, $t g$ -, and $h g$ -C $_{3}$ N $_{4}$ by means of density functiona…

math.GM2014★ 2 cited

Application of fuzzy Laplace transforms for solving fuzzy partial Volterra integro-differential equations

Saif Ullah, Muhammad Farooq, Latif Ahmad +1

Fuzzy partial integro-differential equations have a major role in the fields of science and engineering. In this paper, we propose the solution of fuzzy partial Volterra integro-di…

math.GM2014

Solving fuzzy convolution Volterra integro-differential equation via fuzzy Laplace transforms

Saif Ullah, Latif Ahmad, Muhammad Farooq +1

The solution of integro-differential equations have a major role in the fields of science and engineering. Different approaches both numerical and analytic are used to solve these…

math.NA2014

An alternative derivation of a new Lanczos-type algorithm for systems of linear equations

Saif Ullah, Muhammad Farooq, Abdellah Salhi

Various recurrence relations between formal orthogonal polynomials can be used to derive Lanczos-type algorithms. In this paper, we consider recurrence relation $A_{12}$ for the ch…

math.GM2014★ 3 cited

Solving fuzzy two-point boundary value problem using fuzzy Laplace transform

Latif Ahmad, Muhammad Farooq, Saif Ullah +1

A natural way to model dynamic systems under uncertainty is to use fuzzy boundary value problems (FBVPs) and related uncertain systems. In this paper we use fuzzy Laplace transform…

Unveiling the multi-level structure of midgap states in Sb-doped MoX2​ (X = S, Se, Te) monolayers

Electronic properties of substitutional impurities in graphene-like C2​N, tg-C3​N4​, and hg-C3​N4​

Application of fuzzy Laplace transforms for solving fuzzy partial Volterra integro-differential equations

Solving fuzzy convolution Volterra integro-differential equation via fuzzy Laplace transforms

An alternative derivation of a new Lanczos-type algorithm for systems of linear equations

Solving fuzzy two-point boundary value problem using fuzzy Laplace transform

Unveiling the multi-level structure of midgap states in Sb-doped MoX $_{2}$ (X = S, Se, Te) monolayers

Electronic properties of substitutional impurities in graphene-like C $_{2}$ N, $t g$ -C $_{3}$ N $_{4}$ , and $h g$ -C $_{3}$ N $_{4}$