Positive derivatives and increasing functions.
Zalcman, Lawrence
Elemente der Mathematik, Tome 43 (1988), p. 120-121 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1988-01-01
EUDML-ID : urn:eudml:doc:141435 
@article{GDZPPN002082012,
     title = {Positive derivatives and increasing functions.},
     journal = {Elemente der Mathematik},
     volume = {43},
     year = {1988},
     pages = {120-121},
     zbl = {0701.26006},
     url = {http://dml.mathdoc.fr/item/GDZPPN002082012}
}

Zalcman, Lawrence. Positive derivatives and increasing functions.. Elemente der Mathematik, Tome 43 (1988) pp. 120-121. http://gdmltest.u-ga.fr/item/GDZPPN002082012/