The continuum of base ten number is generally looked upon as a progressive and linear series of cardinal and ordinal numbers. Iterations signify the simple addition of the initial unit to each resulting member encountered in the continuing series of elements known as numbes. The digits 1 - 9 are known as integers or numerals. Of course, multiples of 10, 100, 1000, etc. are formed simply by adding zeros.
Further analysis discloses that this continuum can be viewed as both progressive and regressive. It is not exclusively linear, but has a cyclic function resulting from the terminal character of the last base digit and the next beginning initiated by zero producing the two-digit range. This doubling of number is for all practical purposes a cyclic function that recycles again and again with each ten-fold group produced.
Besides the cyclic and ambidirectional aspects of the number series, there is also a periodic series of reversals that occur in conjunction with the cyclic aspect.