Generalized Fermat conjecture on primitive solutions

Let p,qp,q and rr be positive integers satisfying

1p+1q+1r<1.\frac{1}{p}+\frac{1}{q}+\frac{1}{r}<1.

A solution (X,Y,Z)(X,Y,Z) is called primitive here when XYZ0XYZ\ne0 and gcd(X,Y)=1\gcd(X,Y)=1. Generalized Fermat conjecture. All primitive solutions of

Xp+Yq=ZrX^p+Y^q=Z^r

come from the following ten identities: 1p+23=321^p+2^3=3^2, 72+25=347^2+2^5=3^4, 132+73=2913^2+7^3=2^9, 173+27=71217^3+2^7=71^2, 114+35=122211^4+3^5=122^2, 15490342+338=1561331549034^2+33^8=15613^3, 962223+438=30042907296222^3+43^8=30042907^2, 22134592+14143=6572213459^2+1414^3=65^7, 153122832+92623=113715312283^2+9262^3=113^7, and 762713+177=21063928276271^3+17^7=21063928^2. The conjecture is a proposed classification of all such solutions when the reciprocal-exponent sum is less than one; its resolution status is not specified in the supplied text.

Sources & referencesView supporting material

Primary source

Takafumi Miyazaki and István Pink, “Number of solutions to a special type of unit equations in two variables”, arXiv:2006.15952 (2020).

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