Advance in Functional Equations

Dear Colleagues,

It is our pleasure to invite you to contribute to the special issue of Symmetry dedicated to functional equations. Functional equations and inequalities find their applications in many areas of science, including approximate reasoning, physics, economy and behavioral sciences. Symmetry is a fundamental attribute of several functional equations, including the famous Cauchy functional equations. Free variables appearing in many equations often enjoy several symmetry properties and many techniques rely on exploring them. Therefore, functional equations and inequalities fit into the scope of the multidisciplinary journal Symmetry.

This issue is mainly devoted to research connected with functional equations and inequalities of one and several variables, their stability in a sense of Ulam and applications in all areas of science. In particular, we seek for submissions which bring new methods and new ideas to the field and which discover connections with various branches of science. Papers dealing with applications of functional equations or inequalities are also welcome.

Prof. Włodzimierz Fechner
Prof. Jacek Chudziak
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Symmetry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.