On sets of points where the derivative is $+\infty$ or $-\infty$ correspondingly
Doklady Akademii Nauk, Tome 113 (1957) no. 1, pp. 36-38
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@article{DAN_1957_113_1_a7,
author = {V. M. Tsodyks},
title = {On sets of points where the derivative is $+\infty$ or $-\infty$ correspondingly},
journal = {Doklady Akademii Nauk},
pages = {36--38},
year = {1957},
volume = {113},
number = {1},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DAN_1957_113_1_a7/}
}
V. M. Tsodyks. On sets of points where the derivative is $+\infty$ or $-\infty$ correspondingly. Doklady Akademii Nauk, Tome 113 (1957) no. 1, pp. 36-38. http://geodesic.mathdoc.fr/item/DAN_1957_113_1_a7/