Information For Authors

Aims and scope
Founded in 1972, Journal of Numerical Analysis and Approximation Theory publishes original papers presenting rigorous analysis, numerical methods with theoretical results (accuracy, convergence, stability), computational examples, development and implementation of numerical algorithms, and the interplay between these aspects for topics such as: differential equations (ordinary and partial), optimization, control theory, inverse problems, nonlinear equations and systems, iterative methods, numerical linear algebra, applied functional analysis, approximation theory, interpolation, mathematical aspects of neural networks and machine learning, mathematical modeling, scientific computing.

Papers dealing with iterative methods in \(\mathbb{R}^n\), accompanied by numerical applications, are preferred to settings in \(\mathbb{R}\) or abstract spaces (with no concrete applications indicated).
Applications and strong connections to the aspects mentioned above are mandatory for papers whose main topics concern, for example, inequalities, fractional equations, fuzziness.

It is recommended that original papers do not exceed 20 pages in length.

Reproducibility: Authors should include sufficient information in the manuscript to enable the results of the manuscript to be reproduced. It is recommended to include an online repository containing relevant software and data.

The journal also publishes survey papers in all areas of Numerical Analysis and Approximation Theory, recommended not to exceed 40 pages.

Journal of Numerical Analysis and Approximation Theory is a single-blind peer-reviewed journal. It considers for publication only papers written in English. There are no publication fees. For more infomation about the journal see About the Journal.

Peer review process
Submitted manuscripts are first analyzed by the editors-in-chief and then assigned to an editor, provided they are a good fit to the scope of the journal. The editor invites at least two external reviewers with expertise in the addressed topics to write single-blind review reports, in a period of 6-8 weeks typically. The authors are then informed about the editorial decision (acceptance, minor revisions, major revisions or rejection).

For accepted manuscripts, the average time from submission to publication is around 20 weeks.

The entire peer review process is done on the journal's website using the platform and workflow of Open Journal System.

Open Access Policy
Journal of Numerical Analysis and Approximation Theory articles are published Open Access under a Creative Commons Attribution (CC-BY) 4.0 License that allows others to share the work with an acknowledgment of the work’s authorship and initial publication in this journal.

How to submit
Authors should first check the Submission Guidelines and the Ethics Statements.

Authors need to register with the journal prior to submitting.
If registered, they can simply log in and begin the five-step process.

In the following situations, the authors are asked to create a public profile (e.g.,,,,, etc):
- they have registered to JNAAT without using an institutional e-mail address,
- they do not have a public research profile (homepage, etc.) which contains their CV and list of papers,

Other rules
Number of submissions: authors should typically have no more than one pending submission.

Paper length: the papers should have reasonable length according to the topic they address. Authors may choose to post additional figures, tables, results on specific sites (arxiv, etc.).

Artwork. For the best quality paper, it is highly recommended that the authors submit the artwork – photographs, line drawings, etc. – in an electronic format. The published paper will directly reflect the quality of the artwork provided.