Hello,
I wrote some code that relies on univariate taylor series in q.
Since it was cumbersome to always carry the variable name 'q and the
center of expansion 0 in the type, I created a kind of wrapper domain.
(See attachement for something that demonstrates my problem.)
My wrapper domain actually works nicely as long as I do not want to make
a connection back and forth to UnivariateTaylorSeries.
My question is how can I coerce an element of QEtaTaylorSeries(Q) to an
element of UnivariateTaylorSeries(Q, 'q, 0$Q) and/or the other way round?
I simply cannot find the error in the implementation.
I am sure it has something to do with non-type-valued arguments, but how
can I make this code work nicely without tricks?
Thank you
Ralf
==========================================================
(7) -> t1 - t2
There are 9 exposed and 6 unexposed library operations named -
having 2 argument(s) but none was determined to be applicable.
Use HyperDoc Browse, or issue
)display op -
to learn more about the available operations. Perhaps
package-calling the operation or using coercions on the arguments
will allow you to apply the operation.
Cannot find a definition or applicable library operation named -
with argument type(s)
UnivariateTaylorSeries(Fraction(Integer),q,0)
QEtaTaylorSeries(Fraction(Integer))
Perhaps you should use "@" to indicate the required return type,
or "$" to specify which version of the function you need.
(7) -> t1 :: QTS(Q)
Cannot convert the value from type UnivariateTaylorSeries(Fraction(
Integer),q,0) to QEtaTaylorSeries(Fraction(Integer)) .
(7) -> t2 :: UTS(Q)
Cannot convert the value from type QEtaTaylorSeries(Fraction(Integer
)) to UnivariateTaylorSeries(Fraction(Integer),q,0) .
(7) -> coerce(t1)$QTS(Q)
There are 81 exposed and 159 unexposed library operations named
coerce having 1 argument(s) but none was determined to be
applicable. Use HyperDoc Browse, or issue
)display op coerce
to learn more about the available operations. Perhaps
package-calling the operation or using coercions on the arguments
will allow you to apply the operation.
Cannot find a definition or applicable library operation named
coerce with argument type(s)
UnivariateTaylorSeries(Fraction(Integer),q,0)
Perhaps you should use "@" to indicate the required return type,
or "$" to specify which version of the function you need.
--
You received this message because you are subscribed to the Google Groups
"FriCAS - computer algebra system" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/fricas-devel/36374078-d168-8f4b-eef1-9330f4c81bb2%40hemmecke.org.
