The three great mathematicians of Berlin, Kummer, Weierstrass and Kronecker were close friends for twenty years as they worked closely and effectively together, However, around 1875 Weierstrass and Kronecker fell out. Kummer continued his friendship with Kronecker but this put a strain on his relation with Weierstrass .
Ang tatlong great mathematicians ng Berlin, Kummer, Weierstrass at Kronecker ay malapit na kaibigan para sa dalawampung taon na sila nagtrabaho malapit at epektibong magkasama, Gayunman, sa paligid 1875 Weierstrass at Kronecker Nahulog out. Kummer patuloy ang kanyang friendship na may Kronecker ngunit ito maglagay ng pilay sa kanyang kamag-anak na may Weierstrass.