Weierstrass, Cantor, and Heine base their theories on infinite series, while Dedekind founds his on the idea of a cut (Schnitt) in the system of all rational numbers, separating them into two groups having certain characteristic properties.
Weierstrass, Cantor ad Heine assiɣaymən timusnawen nassən fal anəlkəm waren imədi,aguden Dedekind assiɣayma taness fal anyat ən aɣatas (Schniƭ)dǎɣ tartit ən maɗinan kul atwəjanen,tan azunen as assin gruɗtan lanen tikraš olahnen.