Information Menu

Authors Guidelines

Copyright Policy

Editorial Workflow

Our Journals

vol1-2017-black
oma-cover
ODAM-cover
Ptolemy Journal of chemistry
EASL-cover
Trends in Clinical and Medical Sciences

Ptolemy Scientific Research Press (PSR Press)is a highly regarded publisher of scientific literature dedicated to bringing the latest research and findings to a broader audience. With a focus on cutting-edge research and technology, Ptolemy Scientific Research Press offers a range of publications catering to professionals, researchers, and student’s needs. Whether looking for information on the latest breakthroughs in physics, biology, engineering, or computer science, you can trust Ptolemy Scientific Research Press to deliver insightful, accurate, and engaging content. With its commitment to quality, accessibility, and innovation, Ptolemy Scientific Research Press is an essential resource for anyone interested in science and technology.

Latest Published Articles

Distance-based Indices Computation of Symmetry Molecular Structures

OMS-Vol. 2 (2018), Issue 1, pp. 323–337 Open Access Full-Text PDF
Li Yan, Mohammad Reza Farahani, Wei Gao
Abstract:Most of molecular structures have symmetrical characteristics. It inspires us to calculate the topological indices by means of group theory. In this paper, we present the formulations for computing the several distance-based topological indices using group theory. We solve some examples as applications of our results.
Read Full Article

On Graph Invariants of Oxide Network

EASL-Vol. 1 (2018), Issue 1, pp. 23–28 | Open Access Full-Text PDF
Muhammad Imran, Asima Asghar, Abdul Qudair Baig
Abstract:The application of graph theory in chemical and molecular structure research far exceeds people’s expectations, and it has recently grown exponentially. In the molecular graph, atoms are represented by vertices and bonded by edges. In this report, we study the several Zagreb polynomials and Redefined Zagreb indices of Oxide Network.
Read Full Article

\(L^p-\) boundedness for integral transforms associated with singular partial differential operators

OMA-Vol. 2 (2018), Issue 2, pp. 53–77 | Open Access Full-Text PDF
Lakhdar T. Rachdi, Samia Sghaier
Abstract:We define fractional transforms \(\mathscr{R}_\mu\) and \(\mathscr{H}_\mu\), \(\mu>0\) on the space \(\mathbb{R}\times\mathbb{R}^n\). First, we study these transforms on regular function spaces and we establish that these operators are topological isomorphisms and we give the inverse operators as integro differential operators. Next, we study the \(L^p\)-boundedness of these operators. Namely, we give necessary and sufficient condition on the parameter \(\mu\) for which the transforms \(\mathscr{R}_\mu\) and \(\mathscr{H}_\mu\) are bounded on the weighted spaces \(L^p([0,+\infty[\times\mathbb{R}^n,r^{2a}dr\otimes dx)\) and we give their norms.
Read Full Article
BOOK-foundations-of-mathematical-analysis-and-semigroups-theory
BOOK - NULL CONTROLLABILITY OF DEGENERATE AND NON-DEGENERATE SINGULAR PARABOLIC