Hans Carl Friedrich von Mangoldt (1854–1925) was a German mathematician who contributed to the solution of the prime number theorem.
Von Mangoldt completed his Doctor of Philosophy (Ph.D) in 1878 at the University of Berlin, where his advisors were Ernst Kummer and Karl Weierstrass. He contributed to the solution of the prime number theorem by providing rigorous proofs of two statements in Bernhard Riemann's seminal paper On the Number of Primes Less Than a Given Magnitude. Riemann himself had only given partial proofs of these statements. Mangoldt worked as professor at the RWTH Aachen and was succeeded by Otto Blumenthal.
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