J. Harjani

1.3k total citations · 2 hit papers
41 papers, 977 citations indexed

About

J. Harjani is a scholar working on Geometry and Topology, Applied Mathematics and Modeling and Simulation. According to data from OpenAlex, J. Harjani has authored 41 papers receiving a total of 977 indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Geometry and Topology, 22 papers in Applied Mathematics and 15 papers in Modeling and Simulation. Recurrent topics in J. Harjani's work include Fixed Point Theorems Analysis (30 papers), Nonlinear Differential Equations Analysis (22 papers) and Fractional Differential Equations Solutions (15 papers). J. Harjani is often cited by papers focused on Fixed Point Theorems Analysis (30 papers), Nonlinear Differential Equations Analysis (22 papers) and Fractional Differential Equations Solutions (15 papers). J. Harjani collaborates with scholars based in Spain, Saudi Arabia and Romania. J. Harjani's co-authors include Kishin Sadarangani, B. López, J. Caballero, Vasile Berinde, Bessem Samet and V. A. Stephanovich and has published in prestigious journals such as SHILAP Revista de lepidopterología, Applied Mathematics and Computation and Computers & Mathematics with Applications.

In The Last Decade

J. Harjani

38 papers receiving 893 citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Fixed point theorems for weakly contractive mappings in partially ordered sets

2009 274 citations J. Harjani, Kishin Sadarangani Nonlinear Analysis profile →
Generalized contractions in partially ordered metric spaces and applications to ordinary differential equations

2009 208 citations J. Harjani, Kishin Sadarangani Nonlinear Analysis profile →

Peers

J. Harjani

CTM

A. Amini-Harandi Iran

Jamal Rezaei Roshan Iran

Jeong Sheok Ume South Korea

Mădălina Pačurar Romania

Tayyab Kamran Pakistan

Satish Shukla India

Dhananjay Gopal India

Javid Ali India

Peyman Salimi Iran

Gabriela Petruşel Romania

A. Amini-Harandi Iran

J. Harjani

908 ×1.1

173 ×0.7

56 ×0.4

121 ×1.3

236 ×2.8

CTM

Citations per year, relative to J. Harjani J. Harjani (= 1×) peers A. Amini-Harandi

Countries citing papers authored by J. Harjani

Since Specialization

Citations

This map shows the geographic impact of J. Harjani's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by J. Harjani with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. Harjani more than expected).

Fields of papers citing papers by J. Harjani

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. Harjani. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by J. Harjani. The network helps show where J. Harjani may publish in the future.

Co-authorship network of co-authors of J. Harjani

This figure shows the co-authorship network connecting the top 25 collaborators of J. Harjani. A scholar is included among the top collaborators of J. Harjani based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with J. Harjani. J. Harjani is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Stephanovich, V. A., et al.. (2024). Quantum chaotic features of the spin-orbit coupled excitons in disordered two-dimensional insulators. Physical review. E. 110(2). 24201–24201. 1 indexed citations

Caballero, J., J. Harjani, & Kishin Sadarangani. (2023). Existence and Uniqueness of Positive Solutions to a Class of Singular Integral Boundary Value Problems of Fractional Order. Mediterranean Journal of Mathematics. 20(2). 1 indexed citations

Berinde, Vasile, J. Harjani, & Kishin Sadarangani. (2022). Existence and Approximation of Fixed Points of Enriched φ-Contractions in Banach Spaces. Mathematics. 10(21). 4138–4138. 1 indexed citations

Caballero, J., J. Harjani, & Kishin Sadarangani. (2021). Existence and uniqueness of positive solutions for a class of singular fractional differential equation with infinite-point boundary value conditions. Revista de la Real Academia de Ciencias Exactas Físicas y Naturales Serie A Matemáticas. 115(2). 1 indexed citations

Caballero, J., J. Harjani, & Kishin Sadarangani. (2020). Uniqueness of solutions for a fractional thermostat model. Carpathian Journal of Mathematics. 36(2). 223–228. 1 indexed citations

Harjani, J., B. López, & Kishin Sadarangani. (2020). Existence and uniqueness of mild solutions for a fractional differential equation under Sturm-Liouville boundary conditions when the data function is of Lipschitzian type. Demonstratio Mathematica. 53(1). 167–173. 4 indexed citations

Caballero, J., J. Harjani, & Kishin Sadarangani. (2019). A fixed point theorem for operators of Meir–Keeler type via the degree of nondensifiability and its application in dynamic programming. Journal of Fixed Point Theory and Applications. 22(1). 3 indexed citations

Harjani, J., et al.. (2013). Fixed point theorems for cyclic weak contractions in partially ordered sets endowed with a complete metric. Carpathian Journal of Mathematics. 29(2). 179–186. 4 indexed citations

Harjani, J., B. López, & Kishin Sadarangani. (2013). Fixed point theorems for cyclic weak contractions in compact metric spaces. The Journal of Nonlinear Sciences and Applications. 6(4). 279–284. 3 indexed citations

10.

Caballero, J., J. Harjani, & Kishin Sadarangani. (2012). A best proximity point theorem for Geraghty-contractions. Fixed Point Theory and Applications. 2012(1). 64 indexed citations

11.

Harjani, J., B. López, & Kishin Sadarangani. (2011). Fixed point theorems for weakly C-contractive mappings in ordered metric spaces. Computers & Mathematics with Applications. 61(4). 790–796. 38 indexed citations

12.

Caballero, J., J. Harjani, & Kishin Sadarangani. (2011). Positive solutions for a class of singular fractional boundary value problems. Computers & Mathematics with Applications. 62(3). 1325–1332. 29 indexed citations

13.

Caballero, J., J. Harjani, & Kishin Sadarangani. (2011). Positive and nondecreasing solutions to a singular boundary value problem for nonlinear fractional differential equations. Acceda (Universidad de Las Palmas de Gran Canaria). 3 indexed citations

14.

Caballero, J., et al.. (2011). On existence and uniqueness of positive solutions to a class of fractional boundary value problems. Boundary Value Problems. 2011(1). 9 indexed citations

15.

Harjani, J., et al.. (2010). Contractive-Like Mapping Principles in Ordered Metric Spaces and Application to Ordinary Differential Equations. SHILAP Revista de lepidopterología. 7 indexed citations

16.

Harjani, J., B. López, & Kishin Sadarangani. (2010). On positive solutions of a nonlinear fourth order boundary value problem via a fixed point theorem in ordered sets. Dynamic Systems and Applications. 19. 3 indexed citations

17.

Harjani, J., B. López, & Kishin Sadarangani. (2010). Fixed point theorems for mixed monotone operators and applications to integral equations. Nonlinear Analysis. 74(5). 1749–1760. 88 indexed citations

18.

Harjani, J., et al.. (2009). Existence and Uniqueness of Positive and Nondecreasing Solutions for a Class of Singular Fractional Boundary Value Problems. SHILAP Revista de lepidopterología. 1 indexed citations

19.

Harjani, J. & Kishin Sadarangani. (2009). Fixed point theorems for weakly contractive mappings in partially ordered sets. Nonlinear Analysis. 71(7-8). 3403–3410. 274 indexed citations breakdown →

20.

Harjani, J. & Kishin Sadarangani. (2009). Generalized contractions in partially ordered metric spaces and applications to ordinary differential equations. Nonlinear Analysis. 72(3-4). 1188–1197. 208 indexed citations breakdown →

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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