Koc yekke cɔl cïtmaande raan cɔl Weierstrass, Cantor, ku Heine ake ye piööcdɛn de theories tɔ nï series de infinite ɣic go raan cɔl...Dedekind kakke yuuk nï uruɔp ye yiith (Schnitt) nï system de na baai ye yiith,ye kɛk tɛkɣic ni rational nambai bene kɛk tɔ nï taanke rou yenoŋ yenne kal.e properties ɣiic.