Assertion: function | /r/HasProperty | meaningful
Facets:
value: as expressions
type: MANNER
Source sentences:
text: However such interpretation is not required to be possible, because formal series are not required to give a convergent series when a nonzero numeric value is substituted for x. Also, not all expressions that are meaningful as functions of x are meaningful as expressions designating formal series; for example, negative and fractional powers of x are examples of functions that do not have a corresponding formal power series.