Carl Neumann

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Carl Gottfried Neumann (May 7, 1832 - March 27, 1925) was a German mathematician, born in Königsberg (now Kaliningrad, Russia) and died in Leipzig.

Neumann worked on the Dirichlet principle, and can be considered one of the initiators of the theory of integral equations. The Neumann series, which is analogous to the geometric series

but for infinite matrices, is named after him.

Together with Alfred Clebsch he founded the mathematical research journal Mathematische Annalen.

The Neumann boundary condition for certain types of ordinary and partial differential equations is named after him.

[edit] External references

• O'Connor, John J., and Edmund F. Robertson. "Carl Neumann". MacTutor History of Mathematics archive.
• Carl Neumann at the Mathematics Genealogy Project