Three theorems of Nagell of 1923 concerning integer values of certain sums of fractions are extended.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-ba61-3-1,
author = {A. Schinzel},
title = {Extensions of Three Theorems of Nagell},
journal = {Bulletin of the Polish Academy of Sciences. Mathematics},
volume = {61},
year = {2013},
pages = {195-200},
zbl = {06273828},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ba61-3-1}
}
A. Schinzel. Extensions of Three Theorems of Nagell. Bulletin of the Polish Academy of Sciences. Mathematics, Tome 61 (2013) pp. 195-200. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ba61-3-1/