- Feodor Deahna
Heinrich Wilhelm Feodor Deahna (1815-1844) was a German
mathematician , best known for providing proof of what is now known asFrobenius theorem (differential topology) in 1840.Selected works
* Deahna, F. "Über die Bedingungen der Integrabilitat ....", "J. Refine Angew. Math." 20 (1840) 340-350.
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