Envelope (mathematics) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Envelope (mathematics)" in English language version.

refsWebsite

Global rank English rank

6^th place

6^th place

451^st place

277^th place

ams.org

mathscinet.ams.org

Forsyth, Andrew Russell (1959), Theory of differential equations, Six volumes bound as three, New York: Dover Publications, MR 0123757, §§100-106.

archive.org

John, Fritz (1991), Partial differential equations (4th ed.), Springer, ISBN 978-0-387-90609-6.
Arnold, V. I. (1997), Mathematical Methods of Classical Mechanics, 2nd ed., Berlin, New York: Springer-Verlag, ISBN 978-0-387-96890-2, §46.