4 papers
Proposed method to reduce the determinant of order n
Denis Martínez Tápanes, Jose E. Martínez Serra
This paper presents a theorem which solves the problem of reduction of the determinant order by means of a transformation of it, into other determinant whose each element are a det…
Algunas ideas acerca de la numerabilidad de los conjuntos infinitos
Denis Martínez Tápanes
In which a review of the concept of countability is done in mathematics, subjecting review some of the theorems so far accepted, showing their inconsistency and also taking concret…
General method of Complex Polynomial for determining the radius of the circle circumscribed to a cyclic polygon an arbitrary number of sides, and some important consequences
Denis Martínez Tápanes, J. Enrique Martínez Serra, L. Osiel Rodríguez Cañizarez
This paper presents a general method for obtaining radius of the corresponding circumference to a cyclical polygon sides given the lengths of said sides, using the notion of co…
Some elements of a possible demonstration of the Collatz conjecture
Denis Martínez Tápanes, Jose E. Martínez Serra
In this paper we are shown the following facts: The probability of increased , and the probability of decrease $B_{k}=P(T^{k} (x_{0})<T^{k…