If a class of objects named after this mathematician are simply connected, then they must be isomorphic to either another object named for this man, the complex plane, or the unit disk. Those objects are also the subject of a theorem he co-names with Roch. A problem named for this mathematician can be generalized to involve all Dirichlet L-functions. His namesake (*) surfaces are connected complex manifolds of dimension one. A function named for this mathematician was expressed as an infinite product over the primes by 
If a class of objects named after this mathematician are simply connected, then they must be isomorphic to either another object named for this man, the complex plane, or the unit disk. Those objects are also the subject of a theorem he co-names with Roch. A problem named for this mathematician can be generalized to involve all Dirichlet L-functions. His namesake (*) surfaces are connected complex manifolds of dimension one. A function named for this mathematician was expressed as an infinite product over the primes by Euler. That function evaluates to pi squared over 6 at two and to zero at all negative even integers. For 10 points, name this German mathematician whose namesake hypothesis is a Millennium Prize problem.
If a class of objects named after this mathematician are simply connected, then they must be isomorphic to either another object named for this man, the complex plane, or the unit disk.
Bernhard Riemann