Proof of Goldbach´s conjecture
Goldbach’s Conjecture states that all even numbers greater than 2 can be expressed as the sum of two prime numbers.
Demonstration of the twin prime conjecture
Niceto Valcárcel Yeste. BSc in Physical Sciences from the Spanish National Distance Education University (U.N.E.D.).
Irrationality of numbers (pi + e) and (pi – e)
The aim of this paper is to demonstrate the irrationality of the numbers (π ± e), first showing that at least one of them is irrational and then, by the method of reductio ad absurdum, that the other is also irrational.
Irrationality of the numbers: π/e and πe
Niceto Valcárcel Yeste, BSc in Physical Sciences from the Spanish National Distance Education University (UNED).