Assertion: complex number | /r/HasProperty | understood at the time
Facets:
value: poorly
type: DEGREE
Source sentences:
text: At the time imaginary numbers, as well as negative numbers, were poorly understood and regarded by some as fictitious or useless, much as zero once was.
text: At the time imaginary numbers, as well as negative numbers, were poorly understood and regarded by some as fictitious or useless, much as zero once was.