Theory of numbers

Marsoni

M251S

$29.90

Get it in 3 business days with 1 day shipping. Friday, May 29

Theory of numbers"Theory of Numbers" by George Ballard Mathews is a foundational work in number theory. Written with clarity and precision, the book explores key topics such as divisibility, prime numbers, congruences, quadratic residues, and Diophantine equations. Mathews provides rigorous mathematical proofs while maintaining an accessible style, making it valuable for both students and researchers. Though intended as the first volume of a larger series, this book

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Cute, colorful and appears well made. I can't comment on how well it holds up to heavy chewing as my Jackshund (Francie) doesn't seem interested in it...possibly because it does not have a squeaker... It is a good size, not soft and squishy but harder (rope), which is why I purchased it, hoping it would last longer than some other dog toys that Francie has ripped apart. I may pass it on to two large granddogs.

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Reviewed in the United States on May 1, 2026

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Shadow Walker

Los Angeles, US

★★★★★ 5

Durable

Size: Large

Purchased this for a destructive cat. So far its held up to the chewing and raking.

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Reviewed in the United States on December 27, 2025

Verified Purchase