On the quality of the ABC-solutions
Date: Fri, May 12, 2023
Location: PIMS, University of Lethbridge, Online, Zoom
Conference: A Day to Celebrate Women and Diversity in Mathematics
Subject: Mathematics
Class: Scientific
Abstract:
Let the triple (a,b,c) of integers be such that gcd(a,b,c)=1 and a+b=c. We call such a triple an ABC-solution. The quality of an ABC-solution (a,b,c) is defined as
q(a,b,c)=max{log|a|,log|b|,log|c|}lograd(|abc|)
where rad(|abc|) is the product of distinct prime factors of |abc|. The ABC-conjecture states that given ϵ>0 the number of the ABC-solutions (a,b,c) with q(a,b,c)≥1+ϵ is finite. In the first part of this talk, under the ABC-conjecture, we explore the quality of certain families of the ABC-solutions formed by terms in Lucas and associated Lucas sequences. We also introduce, unconditionally, a new family of ABC-solutions that has quality >1. In the remainder of the talk, we provide a result on a conjecture of Erdõs on the solutions of the Brocard-Ramanujan equation
n!+1=m2
by assuming an explicit version of the ABC-conjecture proposed by Baker.