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20170213 13:38:32 +0100  answered a question  Code error in sagemath SageMath code is written in Python (with a few extensions by the preparser). Your code does not resemble Python.
Indentation matters, no 
20170210 12:54:37 +0100  asked a question  Conversion fraction field(QQ[X]) to fraction field(ZZ[X]) How to I convert an element of the fraction field of QQ[X] to the fraction field of ZZ[X]? In my use case, 
20170104 14:40:30 +0100  commented answer  Lifting a matrix from $\mathbb{Q}[Y]/(Y1)$ Thank you, the workaround works for me. Is the underlying problem a known bug or shall I create a ticket? 
20170104 06:34:11 +0100  asked a question  Linear Combination for Resultant Let I need to compute polynomials Pari has a function Nevertheless, I have a few questions:

20161215 11:23:52 +0100  asked a question  What is _SAGE_VAR_(0)? Using SageMath 7.4, I do the following: I am wondering what 
20161113 06:47:52 +0100  asked a question  Lifting a matrix from $\mathbb{Q}[Y]/(Y1)$ I have a matrix in $\mathbb{Q}[Y]/(Y1)$ and want to lift it to $\mathbb{Q}[Y]$, however, I get an error: Lifting single elements instead of a matrix works: Lifting a matrix from the integers modulo a prime works also: So how do I lift the matrix? Building a new matrix by hand und lifting componentwise seems to be an option; however, I think that it is somewhat ugly. 
20161003 13:59:24 +0100  commented answer  How to extend ring homomorphism to polynomial ring (or its fraction field) I now have performance problems with my above solution: Any ideas? 
20160927 08:24:43 +0100  commented answer  How to extend ring homomorphism to polynomial ring (or its fraction field) It worked once, but then my code came accross another example and UniqueRepresentation gave me problems. So I ended up avoiding 
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20160927 05:28:23 +0100  commented answer  How to extend ring homomorphism to polynomial ring (or its fraction field) Thank you, the shortcut was exactly what I need. 
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20160926 16:11:42 +0100  asked a question  How to extend ring homomorphism to polynomial ring (or its fraction field) I have a homomorphism from a number field
I now work in the polynomial ring
How do I get a homomorphism from
Same question about the fraction field of
Is there a more elegant way than calling
So basically, I'd like to extend my homomorphism 