Sigmund Gundelfinger
Sigmund Gundelfinger (14 February 1846 in Kirchberg an der Jagst – 13 December 1910 in Darmstadt) was a German-Jewish mathematician who introduced the Gundelfinger quartic and proved the completeness of the invariants of a ternary cubic. Gundelfinger quartic 
In mathematics, the Gundelfinger quartic is a quartic surface in projective space studied by . Selected works

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19th-century German mathematicians
20th-century German mathematicians
1846 births
1910 deaths
19th-century German Jews
Mathematicians from the German Empire