Sources of Data
The 5th edition of the Research.com Best Mathematics Scientists in Iran, Islamic Republic Of Ranking was developed using comprehensive bibliometric data primarily sourced from OpenAlex and CrossRef, complemented by multiple other trusted data providers. These databases collectively offer extensive coverage of scientific publications and citations across disciplines, enabling a robust and data-driven evaluation of research impact. The bibliometric data utilized to calculate citation-based metrics for this ranking were collected on January 12, 2026.
A scientist’s position in the ranking is determined by their D-index (Discipline H-index), which uniquely considers only those papers and citation metrics strictly within the examined discipline, thus providing a field-specific measure of research influence and productivity.
Scope of Research and Eligibility Criteria
The ranking assessment examined profiles of 279,971 scientists identified from a wide range of bibliometric sources covering all research disciplines. Within the specific scope of Mathematics, 37 scientists were evaluated in detail.
To qualify for inclusion in the Mathematics ranking, a scientist’s D-index had to meet or exceed a threshold of 30. Additionally, a majority of their tier publications needed to be directly within the area of Mathematics. Consideration was also given to awards and notable achievements pertinent to Mathematics, ensuring recognition of meaningful contributions within the field.
The D-index threshold is calibrated in increments of 10 based on the estimated total number of scholars in each discipline, designed to include approximately the top 1% of leading researchers while maintaining discipline-specific relevance. Furthermore, eligibility required a proximity of 30% or less between a scientist’s overall H-index and their discipline-specific D-index to ensure alignment of general productivity and domain-focused impact.
Additional Verification Practices
Recognizing that raw bibliometric data alone does not fully capture the nuances of scholarly impact, the Research.com team applied rigorous manual verification procedures. Each scientist profile was individually checked and cross-referenced against publications listed across a broad spectrum of reputable sources. This step assures data accuracy and reduces potential errors or misattributions.
While not a direct factor affecting ranking position, the volume of papers published in prominent journals and conference proceedings serves as an important secondary indicator of scientific contribution within the Mathematics community.
The final ranking positions are established using each researcher’s D-index derived from the citation and publication information aggregated principally from OpenAlex and CrossRef — two of the foremost bibliometric databases accessible to the global research community. For further details on the rigorous methodology employed, please visit our methodology page.
Research.com’s Mission and Agenda
Research.com is dedicated to motivating researchers, companies, and policy makers worldwide to observe and understand the trajectories of leading experts in their respective fields. Our goal is to provide the global scientific community with transparent, reliable insights into who the foremost experts are in specific areas of study, across various countries, and within research institutions.
By compiling and publishing these rankings with meticulous care and professionalism, we strive to foster connectivity, collaboration, and informed decision-making in science policy, research funding, and academic advancement. This ranking stands as a testament to careful data curation and a commitment to excellence in the evaluation of scientific impact.
