With Lebesgue, this man's name denotes a lemma which states that if a function oscillates rapidly about zero, its integral will be small.  With Cauchy, his name describes a set of equations necessary for a complex function to be holomorphic, and his namesake surface is a one-dimensional complex manifold.  This man may be most famous for formulating one of the most well kno
With Lebesgue, this man's name denotes a lemma which states that if a function oscillates rapidly about zero, its integral will be small.  With Cauchy, his name describes a set of equations necessary for a complex function to be holomorphic, and his namesake surface is a one-dimensional complex manifold.  This man may be most famous for formulating one of the most well known unsolved problems in mathematics -  whether the real part of any nontrivial zero of his eponymous zeta function has real part one-half. FTP, name this German mathematician whose namesake sums also approach his namesake integral.
With Lebesgue, this man's name denotes a lemma which states that if a function oscillates rapidly about zero, its integral will be small.  
Bernhard Riemann