General Letters in Mathematics

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Neighborhoods of certain p-valent analytic functions defined by using generalized differential operators

A. Amourah , O. Dalalaa , A. Alelaumi

In this paper, by use of the familiar concept of neighborhoods of p-valently analytic functions, the authors show several inclusion relations associated with the (n, )-neighborhood of certain subclasses of analytic functions.

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When Doesn’t the Interval [an+k + Pn, an+k+1 + Pn] (n, k 2 N) Contain any Primes? Theorem and Counterexamples (an is the nth Prime Number & Pn is the nth Prime Factorial)

Hayat Rezgui

The objective of this short paper is to give and prove a main theorem confirming that any interval of the special form: ]an+k + Pn, an+k+1 + Pn[ (n 2 N) does not contain any primes, for all k 2 N such that an+k+1 < a2 n+1 (an is the nth prime number & Pn is the nth prime factorial). Then ...

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