cf
FieldAncillary.
isfieldancillary
True, denoting that the variable is a field ancillary object.
New in version 2.0.
See also
isauxiliary, isdimension, isdomainancillary, ismeasure
isauxiliary
isdimension
isdomainancillary
ismeasure
>>> f.isfieldancillary True
cf.FieldAncillary.isdomainancillary
cf.FieldAncillary.ismeasure