Paul Émile Appell

M. P. Appell is the same person: it stands for Monsieur Paul Appell.
Paul Appell
Appell in 1921
Born(1855-09-27)27 September 1855
Died24 October 1930(1930-10-24) (aged 75)
NationalityFrench
Known forAppell polynomials
Appell series
Appell sequence
Appell's equation of motion
Appell–Humbert theorem
Appell–Lerch sums
Complex–shift method
Scientific career
FieldsMathematics
Physics

Paul Émile Appell (27 September 1855 in Strasbourg – 24 October 1930 in Paris) was a French mathematician and Rector of the University of Paris. Appell polynomials and Appell's equations of motion are named after him, as is rue Paul Appell in the 14th arrondissement of Paris and the minor planet 988 Appella.