is exist a field is FunctionField() but not RationalFunctionField()?
is exist a field is FunctionField() but RationalFunctionField()?
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3 Answers
I am not sure i understand your question, but FunctionField() creates a rational funciton field (from which you can create other function fields), see this page;
sage: K.<x> = FunctionField(RDF)
sage: K
Rational function field in x over Real Double Field
from sage.rings.function_field.function_field import is_FunctionField
is_FunctionField(RDF)
False
from sage.rings.function_field.function_field import is_RationalFunctionField
Traceback (click to the left of this block for traceback) ... ImportError: cannot import name is_RationalFunctionField
thank you very much!
I donot know other function fields not RationalFunctionField,cound give more?
Real Field is not a RationalFunctionField? is there a polynomial?
F(RR)(t),even F(CC)(t) is RationalFunctionField.like p-adic,whether F(Qp)(t) is a RationalFunctionField?
there a word name totally_positive in Real Field ,and there a function named is_totally_positive() in Global Number Fields,the same meaning?
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Asked: 2013-12-23 04:55:36 +0100
Seen: 264 times
Last updated: Dec 25 '13
