Cristian Cobeli

most citedA game with divisors and absolute differences of exponents

6 citations · 7 across the 4 of their papers we have counts for

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math.NT2014★ 6 cited

A game with divisors and absolute differences of exponents

Cristian Cobeli, Alexandru Zaharescu

In this work, we discuss a number game that develops in a manner similar to that on which Gilbreath's conjecture on iterated absolute differences between consecutive primes is form…

math.NT2014

On the geometry behind a recurrent relation

Cristian Cobeli, Alexandru Zaharescu

We consider a certain linear recursive relation with integer parameters and study some of its algebraic and geometric properties, with the purpose of estimating the number of chain…

math.NT2014★ 1 cited

Radial Density in Apollonian Packings

Jayadev S. Athreya, Cristian Cobeli, Alexandru Zaharescu

Given an Apollonian Circle Packing $P$ and a circle $C_{0} = \partial B (z_{0}, r_{0})$ in $P$ , color the set of disks in $P$ tangent to $C_{0}$ red. What prop…

math.NT2008

On the discrete logarithm problem

Cristian Cobeli

Let $p > 2$ be prime and $g$ a primitive root modulo $p$ . We present an argument for the fact that discrete logarithms of the numbers in any arithmetic progression are uniformly dist…