def super_categories(self):
"""
EXAMPLES::
sage: NumberFields().super_categories()
[Category of fields]
"""
return[Fields()]
def super_categories(self):
"""
Returns the Category of which this is a direct sub-Category
For a list off all super categories see all_super_categories
EXAMPLES::
sage: FunctionFields().super_categories()
[Category of fields]
"""
return [Fields()]