Changes of sign of error terms related to Euler's function and to divisor functions.
Pétermann, Y.-F. S.
Commentarii mathematici Helvetici, Tome 61 (1986), p. 84-101 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1986-01-01
EUDML-ID : urn:eudml:doc:140042 
@article{GDZPPN00206605X,
     title = {Changes of sign of error terms related to Euler's function and to divisor functions.},
     journal = {Commentarii mathematici Helvetici},
     volume = {61},
     year = {1986},
     pages = {84-101},
     zbl = {0613.10037},
     url = {http://dml.mathdoc.fr/item/GDZPPN00206605X}
}

Pétermann, Y.-F. S. Changes of sign of error terms related to Euler's function and to divisor functions.. Commentarii mathematici Helvetici, Tome 61 (1986) pp. 84-101. http://gdmltest.u-ga.fr/item/GDZPPN00206605X/