Density covers
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A. M. Bruckner, Charles L. Thorne (1973)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
Ladislav Mišík (1971)
Pokroky matematiky, fyziky a astronomie
H. H. Pu, H. W. Pu (1982)
Colloquium Mathematicae
P. Du Bois-Reymond (1879)
Bulletin des Sciences Mathématiques et Astronomiques
T. W. Körner (1990)
Colloquium Mathematicae
Ammi, Moulay Rchid Sidi, Ferreira, Rui A.C., Torres, Delfim F.M. (2008)
Journal of Inequalities and Applications [electronic only]
Zdeněk Hustý (1990)
Czechoslovak Mathematical Journal
(1995)
S.D. Chatterji (1971)
Manuscripta mathematica
Artur Korniłowicz (2017)
Formalized Mathematics
In this article, we formalize in the Mizar system [3] the notion of the derivative of polynomials over the field of real numbers [4]. To define it, we use the derivative of functions between reals and reals [9].
H. Fejzić, R. E. Svetic, C. E. Weil (2010)
Fundamenta Mathematicae
The main result of this paper is that if f is n-convex on a measurable subset E of ℝ, then f is n-2 times differentiable, n-2 times Peano differentiable and the corresponding derivatives are equal, and except on a countable set. Moreover is approximately differentiable with approximate derivative equal to the nth approximate Peano derivative of f almost everywhere.
Richard Fleissner (1977)
Fundamenta Mathematicae
Boyarsky, Abraham (1984)
International Journal of Mathematics and Mathematical Sciences
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