EntityQ1376876· pop 22· linked from 74 articlesdecimal representationSign in to saveexpression in the form of a seriesConnectionsnatural numberEntitydecimalEntitysequenceEntitydecimal separatorEntityPiConceptInternational Standard Book NumberEntityreal numberEntityrational numberEntityfractionEntitydigitEntityirrational numberEntityDonald KnuthEntityEuler's numberEntityseriesEntityintervalEntity0.999...EntitySimon StevinEntityif and only ifEntitysquare root of 2EntitysignEntityCategoriesMathematical notation