Het lichaam van alle rationele and irrationele getallen wordt de reele getallen genoemd, en aangeduid als
.
De reele getallen kan men uitbreiden met de het imaginare getal i, gelijk aano
.
,
bevatten zijn de surreele getallen.
Affinely Extended Reele Getallen, Complexe Getallen, Continuum, i, Imaginair Getal, Integer Relatie, Projectively Extended Reele Getallen, Rationeel Getal, Reel Getal Picking, Reel Deel, Surreel Getal
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