Dear Arpad,

I could find only the following answer to your question on the internet, I hope this helps!

• General Topology by John L. Kelley (1955)

This classic textbook includes a chapter on Volterra spaces, which it defines as "spaces in which certain properties of real-valued functions on the space hold true." The chapter discusses the basic properties of Volterra spaces, as well as some examples and applications.

• Topology by Allen Hatcher (2002)

This more recent textbook also includes a chapter on Volterra spaces. Hatcher takes a more geometric approach to the subject, and he uses Volterra spaces to illustrate some of the key concepts of general topology.

• Introduction to General Topology by Gerald Kelly (1991)

This undergraduate textbook includes a brief discussion of Volterra spaces in its chapter on separation axioms. Kelly defines Volterra spaces as "spaces in which the intersection of finitely many dense Gδ subsets is dense."

• Problems and Solutions in General Topology by Nagata, Jun-iti (1970)

This problem book includes several problems on Volterra spaces. The problems range in difficulty from easy to challenging, and they cover a variety of topics related to Volterra spaces.

Dear Salih,

Thank you very much for your kind help.

However, in Kelley 's book, I could not find anythig about

Volterra spaces.

Moreover, the other three books were not available even

on the Library Genesis.

With best regards,

Arpad

Dear Prpf. Szaz, my question is not about volteterra spaces. I am asking concerning some notations in the word file which you sent me in Definition 11.1. I do not know what those notations mean \nu-R, N_R, \mu_R and M_R.

I o not remember, either in Us or in Canada, David Gauld talked about Volterra spaces, also Sina Greenwood in Hungaria. But in that time I had some other interests in research. In our joint paper with Jeyanthi and Geetha , some notations are not defined but implied for example what are C(f) and C(g) in the Introduction?

Dear doctor

I'm also looking for something useful about Volterra space.

So far, I haven't found anything about it that would be useful

I hope you find something about it that you can help me with

Gratefully

Dear Mustafa,

Thank you for your interest in this topic.

The enclosed incomplete References will help you.

Make researches in relator (generalized uniform ) spaces

instead of the less convenient opological ones.

With best wishes,

Arpad

Dear Professor Jafari,

Thank you for your two remarks.

Now, in additon to the two former joint papers of

Sina Greenwood I have found a third remarkable one

on sigma-ideals and Volterra spaces.

She also has several interesting papers on set-valued

functions, continuity, connectedness and "products"

of relations.

With best regards,

Arpad Szaz

Dear Professor Al-Jaafari.

Thank you for your note.

Now, most of the sources are unclear

Is it possible to obtain a thesis or dissertation?

with respect