scholarly journals Divergent Series and Its Assigned Value in a Hyperreal Context

2020 ◽  
Vol 2 (1) ◽  
pp. 29-30
Author(s):  
Bas Van der Reijden

This letter discusses the deep connection between the infinite sum of natural numbers and the value -1/12. Aside of more widely known facts, we consider a nontrivial way in which we show the veracity of this connection; more precisely this concerns the BGN method \citep{bgn} applied on the so-called damped oscillated Abel summed variant of the series. Moreover, we have found a generalization of this method which `correctly' assigns finite values to other divergent series. We conclude with some questions concerning whether and how we can analytically relate our hyperreal terms to frame the method in a more justifiable and applicable context.

2020 ◽  
Vol 5 (1-2) ◽  
pp. 05-08
Author(s):  
Dr. R. Sivaraman

The numbers which are sum of first n natural numbers are called Triangular numbers and numbers which are product of two consecutive positive integers are called Pronic numbers. The concept of Ramanujan summation has been dealt by Srinivasa Ramanujan for divergent series of real numbers. In this paper, I will determine the Ramanujan summation for positive integral powers of triangular and Pronic numbers and derive a new compact formula for general case.


1997 ◽  
Vol 66 (2) ◽  
pp. 211-224 ◽  
Author(s):  
Tomasz łuczak ◽  
Tomasz Schoen

Author(s):  
Diego Miramontes de León ◽  
Gerardo Miramontes de León

En este trabajo interesa mostrar que dos series divergentes, aunque ambas tienen un número infinito de términos, al tener términos diferentes, su valor al infinito también difiere. En el documento se muestra que la serie armónica, dada por la suma del inverso de los números naturales, puede descomponerse en dos series. Una de ellas dada por la suma del inverso de los naturales de la forma 1/np con p > 1 y la otra, que será llamada subarmónica, formada por el resto de los términos que completan la serie armónica original. Se muestra que cada una de estas series es, una convergente y la otra divergente, obteniendo así la serie original divergente. Se incluye la demostración de la divergencia de las nuevas series, y como extensión de esta descomposición de la serie armónica, se hace una comparación de dos series subarmónicas las cuales, a pesar de ser ambas divergentes, difieren en su valor al infinito.   Abstract This work aims to show that two divergent series, although both have an infinite number of terms, if they have different terms, their value to infinity also differs. In this document, it is shown that the harmonic series, given by the sum of the inverse of natural numbers, can be decomposed into two series; one of them is given by the sum of the inverse of the naturals in the form 1/np where p > 1 and the other, which will be called subharmonic, formed by the rest of the terms that complete the originalharmonic series. It is shown that each of these series is one convergent and the other divergent, thus obtaining the original divergent series. It is included the demonstration of the divergence of the new series, and as an extension of this decomposition of the harmonic series, a comparison is made of two subharmonic series which, despite being both divergent, differ in their value to infinity.


Author(s):  
Tyron Goldschmidt

This chapter considers Plantinga’s argument from numbers for the existence of God. Plantinga sees divine psychologism as having advantages over both human psychologism and Platonism. The chapter begins with Plantinga’s description of the argument, including the relation of numbers to any divine attribute. It then argues that human psychologism can be ruled out completely. However, what rules it out might rule out divine psychologism too. It also argues that the main problem with Platonism might also be a problem with divine psychologism. However, it will, at the least, be less of a problem. In any case, there are alternative, possibly viable views about the nature of numbers that have not been touched by Plantinga’s argument. In addition, the chapter touches on the argument from properties, and its relation to the argument from numbers.


Author(s):  
Øystein Linnebo

How are the natural numbers individuated? That is, what is our most basic way of singling out a natural number for reference in language or in thought? According to Frege and many of his followers, the natural numbers are cardinal numbers, individuated by the cardinalities of the collections that they number. Another answer regards the natural numbers as ordinal numbers, individuated by their positions in the natural number sequence. Some reasons to favor the second answer are presented. This answer is therefore developed in more detail, involving a form of abstraction on numerals. Based on this answer, a justification for the axioms of Dedekind–Peano arithmetic is developed.


2021 ◽  
Vol 31 (1) ◽  
pp. 51-60
Author(s):  
Arsen L. Yakymiv

Abstract Dedicated to the memory of Alexander Ivanovich Pavlov. We consider the set of n-permutations with cycle lengths belonging to some fixed set A of natural numbers (so-called A-permutations). Let random permutation τ n be uniformly distributed on this set. For some class of sets A we find the asymptotics with remainder term for moments of total cycle number of τ n .


Author(s):  
Vakeel A. Khan ◽  
Umme Tuba ◽  
SK. Ashadul Rahama ◽  
Ayaz Ahmad

In 1990, Diamond [16] primarily established the base of fuzzy star–shaped sets, an extension of fuzzy sets and numerous of its properties. In this paper, we aim to generalize the convergence induced by an ideal defined on natural numbers ℕ , introduce new sequence spaces of fuzzy star–shaped numbers in ℝ n and examine various algebraic and topological properties of the new corresponding spaces as well. In support of our results, we provide several examples of these new resulting sequences.


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