Gottfried Wilhelm Leibniz
The Max Born academic genealogy leads to كارل فريدريش غاوس and then on to Otto Mencke. The Sommerfeld genealogy leads to Felix Klein and then to Otto Mencke (via Gauss) and غوتفريد لايبنتس. The Leibniz heritage، however، is due to the premature death of Klein's advisor، جوليوس بلكر، which forced a second supervisor for the final examination، namely رودولف ليبشيتز.