An Introduction to Trigonometry and its Applications

Indexed in: EBSCO, Ulrich's Periodicals Directory

This book represents a novel approach for the trigonometry and an original scientific work in this field, by using the ensemble structure composed of the real analysis and the axiomatic fundaments of ...
[view complete introduction]

US $

*(Excluding Mailing and Handling)

Sets. Relations. R and R¯

Pp. 1-28 (28)

Vasile Postolică


In this chapter we will briefly present the fundamental terminology of mathematics regarding notions such as set and, respectively, relation, mentioning the algebraic-topological structures for R and R__ sets.


Axiom, geometry, cardinal, relation, function, real number, extension, completeness axiom, Cantor- Dedekind, topology, implication.


Romanian Academy of Scientists, “Vasile Alecsandri” University of Bacău, România.