Numerical Functional Analysis and Optimization

Aims & Scope

Numerical Functional Analysis and Optimization is a journal aimed at development and applications of functional analysis and operator-theoretic methods in numerical analysis, optimization and approximation theory, control theory, signal and image processing, inverse and ill-posed problems, applied and computational harmonic analysis, operator equations, and nonlinear functional analysis.

Not all high-quality papers within the union of these fields are within the scope of NFAO.

Generalizations and abstractions that significantly advance their fields and reinforce the concrete by providing new insight and important results for problems arising from applications are welcome.

On the other hand, technical generalizations for their own sake with window dressing about applications, or variants of known results and algorithms, are not suitable for this journal.

Numerical Functional Analysis and Optimization publishes about 70 papers per year.

It is our current policy to limit consideration to one submitted paper by any author/co-author per two consecutive years.

Exception will be made for seminal papers.

View Aims & Scope

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Metrics & Ranking

Impact Factor

Year	Value
2025	1.4
2024	1.40

SJR (SCImago Journal Rank)

Year	Value
2024	0.657

Quartile

Year	Value
2024	Q2

h-index

Year	Value
2024	54

Journal Rank

Year	Value
2024	8742

Journal Citation Indicator

Year	Value
2024	369

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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 Computer Science and 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.

• Differentiation with Respect to the Domain in Boundary Value Problems

  Citation: 252

  Authors: J.

• Hybrid Steepest Descent Method for Variational Inequality Problem over the Fixed Point Set of Certain Quasi-nonexpansive Mappings

  Citation: 195

  Authors: Isao, Nobuhiko

• The Finite Difference Methods for Fractional Ordinary Differential Equations

  Citation: 188

  Authors: Changpin, Fanhai

• Optimality for ill-posed problems under general source conditions

  Citation: 187

  Authors: Ulrich

• Proximinal Retracts and Best Proximity Pair Theorems

  Citation: 187

  Authors: W. A., Simeon, P.

• Common Fixed Point Theorems in Complex Valued Metric Spaces

  Citation: 184

  Authors: Akbar, Brian, M.

• Sampling procedures in function spaces and asymptotic equivalence with shannon's sampling theory

  Citation: 172

  Authors: Akram, Michael, Akram

• The majorant method in the theory of newton-kantorovich approximations and the pták error estimates

  Citation: 155

  Authors: P. P., D. F.

• AN IMPLICIT ITERATION PROCESS FOR NONEXPANSIVE MAPPINGS

  Citation: 154

  Authors: Hong-Kun, Ramesh G.

• Minimizing certain convex functions over the intersection of the fixed point sets of nonexpansive mappings

  Citation: 145

  Authors:

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