Integral Equations and Operator Theory

Aims & Scope

Integral Equations and Operator Theory (IEOT) is devoted to the publication of current research in integral equations, operator theory and related topics with emphasis on the linear aspects of the theory.

The journal reports on the full scope of current developments from abstract theory to numerical methods and applications to analysis, physics, mechanics, engineering and others.

The journal consists of two sections: a main section consisting of refereed papers and a second consisting of short announcements of important results, open problems, information, etc.

View Aims & Scope

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Metrics & Ranking

Impact Factor

Year	Value
2025	0.9
2024	0.80

SJR (SCImago Journal Rank)

Year	Value
2024	0.724

Quartile

Year	Value
2024	Q1

h-index

Year	Value
2024	54

Journal Rank

Year	Value
2024	7761

Journal Citation Indicator

Year	Value
2024	138

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Abstracting & Indexing

Journal is indexed in leading academic databases, ensuring global visibility and accessibility of our peer-reviewed research.

• Scopus
• Google Scholar
• Web of Science

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Subjects & Keywords

Journal’s research areas, covering key disciplines and specialized sub-topics in Mathematics, designed to support cutting-edge academic discovery.

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Most Cited Articles

The Most Cited Articles section features the journal's most impactful research, based on citation counts. These articles have been referenced frequently by other researchers, indicating their significant contribution to their respective fields.

• General Fractional Calculus, Evolution Equations, and Renewal Processes

  Citation: 292

  Authors: Anatoly N.

• Onp-hyponormal operators for 0<p<1

  Citation: 236

  Authors: Ariyadasa

• m-Isometric transformations of Hilbert space, I

  Citation: 187

  Authors: Jim, Mark

• Boundary integral equations for screen problems in IR3

  Citation: 168

  Authors: Ernst P.

• Exponential stability, exponential expansiveness, and exponential dichotomy of evolution equations on the half-line

  Citation: 164

  Authors: Frank, Roland

• Integral equations with non integrable kernels

  Citation: 135

  Authors: J. C.

• Modulation spaces and pseudodifferential operators

  Citation: 133

  Authors: Karlheinz, Christopher

• Neumann and mixed problems on curvilinear polyhedra

  Citation: 121

  Authors: Monique

• Boundary integral operators for the heat equation

  Citation: 119

  Authors: Martin

• m-Isometric transformations of hilbert space, III

  Citation: 117

  Authors: Jim, Mark

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