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106.35 On the representation of rational numbers in the form

Published online by Cambridge University Press:  12 October 2022

Thanh Tung Vu*
250 Quang Trung, Namdinh City, Vietnam e-mail:


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© The Authors, 2022. Published by Cambridge University Press on behalf of The Mathematical Association

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Krachun, D., Sun, Z.-W., Each positive rational number has the form φ (m 2)/φ (n 2), The American Mathematical Monthly, 127(9) (2020) pp. 847849.Google Scholar