Adolf Kneser, Date of Birth, Place of Birth, Date of Death

Adolf Kneser

German mathematician

Date of Birth: 19-Mar-1862

Place of Birth: Grüssow, Mecklenburg-Vorpommern, Germany

Date of Death: 24-Jan-1930

Profession: mathematician, university teacher

Nationality: Germany

Zodiac Sign: Pisces

Adolf Kneser (19 March 1862 – 24 January 1930) was a German mathematician. He was born in Grüssow, Mecklenburg, Germany and died in Breslau, Germany (now Wroclaw, Poland). He is the father of the mathematician Hellmuth Kneser and the grandfather of the mathematician Martin Kneser. Kneser is known for the first proof of the four-vertex theorem that applied in general to non-convex curves. Kneser's theorem on differential equations is named after him, and provides criteria to decide whether a differential equation is oscillating.
He is also one of the namesakes of the Tait-Kneser theorem on osculating circles.