Leonid Lebedev [SEP] country of citizenship
Leonid Lebedev
Leonid Lebedev (born May 2, 1956) is a Russian billionaire businessman, and a former elected representative in Russia's Upper House of Parliament.
Lebedev is sole owner of Sintez Group, a privately held energy, oil and gas and property development company with more than $1 billion in annual sales. In 1988 he co-founded the company, which according to "Forbes Russia" now ranks 154th among private companies in Russia.
He has also been a businessman in music and film,
in the Mathematics and Computer Sciences: The 1985–1986 Survey", Mathematical Association of America No. 7.
- John Lane Bell: "A Primer of Infinitesimal Analysis", Cambridge University Press, 1998. . Uses synthetic differential geometry and nilpotent infinitesimals.
- Florian Cajori, "The History of Notations of the Calculus." "Annals of Mathematics", 2nd Ser., Vol. 25, No. 1 (Sep. 1923), pp. 1–46.
- Leonid P. Lebedev and Michael J. Cloud