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Article

Frobenius Numbers Associated with Diophantine Triples of x2-y2=zr

1
Department of Mathematical Sciences, School of Science, Zhejiang Sci-Tech University, Hangzhou 310018, China
2
Faculty of Education, Nagasaki University, Nagasaki 852-8521, Japan
*
Author to whom correspondence should be addressed.
Symmetry 2024, 16(7), 855; https://doi.org/10.3390/sym16070855 (registering DOI)
Submission received: 24 April 2024 / Revised: 25 June 2024 / Accepted: 3 July 2024 / Published: 5 July 2024
(This article belongs to the Section Physics)

Abstract

We give an explicit formula for the p-Frobenius number of triples associated with Diophantine Equations x2y2=zr (r2), that is, the largest positive integer that can only be represented in p ways by combining the three integers of the solutions of Diophantine equations x2y2=zr. This result is also a generalization because if r=2 and p=0, the (0-)Frobenius number of the Pythagorean triple has already been given. To find p-Frobenius numbers, we use geometrically easy to understand figures of the elements of the p-Apéry set, which exhibits symmetric appearances.
Keywords: Frobenius problem; Diophantine equations; Pythagorean triples; Apéry set Frobenius problem; Diophantine equations; Pythagorean triples; Apéry set

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MDPI and ACS Style

Yin, R.; Komatsu, T. Frobenius Numbers Associated with Diophantine Triples of x2-y2=zr. Symmetry 2024, 16, 855. https://doi.org/10.3390/sym16070855

AMA Style

Yin R, Komatsu T. Frobenius Numbers Associated with Diophantine Triples of x2-y2=zr. Symmetry. 2024; 16(7):855. https://doi.org/10.3390/sym16070855

Chicago/Turabian Style

Yin, Ruze, and Takao Komatsu. 2024. "Frobenius Numbers Associated with Diophantine Triples of x2-y2=zr" Symmetry 16, no. 7: 855. https://doi.org/10.3390/sym16070855

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