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2015-06-14 00:48:40 +0200 | commented answer | About finding roots of polynomials in specific domains If I am reading the code correctly and R is a list, then you could try |

2015-06-14 00:44:39 +0200 | asked a question | Inverting a polynomial in a Quotient Polynomial Ring. I need to compute the inverse of a polynomial p (when such an inverse exists, of course) in Z_q[X]/(X^n+1) and Q[X]/(X^n+1). I tried the natural approach:
I get Another approach I tried : I implemented addition and multiplication in a ring similar to Q[X]/(X^n+1) by doing the operations in Q[X] and then reducing mod (X^n+1). Inversing the polynomial has me stumped with this approach. Any ideas? Either code-wise or mathematical-wise. (To clarify, Z_q = Z/qZ.) |

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2015-06-10 13:43:12 +0200 | asked a question | Organizing files in Sage Cloud/modules I am working in sage cloud, in a worksheet (sagews). I wrote some classes and methods so far and I wish to keep them separated from my new code/organize my projects in files that I can import from. I want something like file Resources.(.py? .sage? .sagews?) with classes Foo, Foo2, Foo3 and to use this in a new spreadsheet:
While this seems like a basic question, the only thing I could discover on this topic was a similar unanswered question: http://ask.sagemath.org/question/2604... How do I do this? How do I split a project in several files(modules?) that I could import from? |

2015-06-09 19:57:59 +0200 | commented answer | Quotient of Polynomial rings reduction not working I didn't know that, and it's going to help me tremendously. Thank you! |

2015-06-09 18:37:51 +0200 | received badge | ● Scholar (source) |

2015-06-09 18:37:33 +0200 | commented answer | Quotient of Polynomial rings reduction not working Thank you very much for your answer. I googled the commented code and found the source code, and I now understand why it wasn't working as expected. Since I'm working with a slightly more complicated ring than this (Z[x]/poly1/poly2), I am now trying to use overriding and inheritance (of PolynomialQuotientRing and QuotientRing, I hope that "_domain_with_category" isn't significant for this) to obtain the behaviour that I want (reduce, quo_rem...). Thank you. |

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2015-06-09 15:44:26 +0200 | asked a question | Quotient of Polynomial rings reduction not working
` `
Why am I not getting the result 1 in both cases? |

2015-06-07 14:06:30 +0200 | asked a question | Polynomial Ring default_variable
AttributeError: 'PolynomialQuotientRing_domain_with_category.element_class' object has no attribute 'default_variable' From my point of view, sage doesn't know what to use as a symbolic variable to g. How do I assign a variable to g? var('x') var('xbar') before the gen_lattice call don't work, and neither I can use self.R.<x> = ZR.quo((x^self.n+1)) (although R.<x> = ZR.quo((x^self.n+1)) ) works. |

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