2022-03-17 03:47:06 +0200 | received badge | ● Popular Question (source) |

2020-08-12 01:12:31 +0200 | commented answer | Sage pip not compatible with PyPI Sage 9.0 switched to Python 3, so if you have a newer version of Sage use |

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2019-03-07 19:30:13 +0200 | answered a question | How to change sqrt(5) to decimal? Try |

2019-02-04 21:59:43 +0200 | asked a question | basis of subspace of complex field Hi - Given a set of elements of For example, given $3$, $1+\sqrt{5}$, $i$, and $i-1$, I'd expect my output to be $\{1, \sqrt{5}, i\}$, since my original four elements can be written as $(3,0,0)$, $(1,1,0)$, $(0,0,1)$, and $(-1,0,1)$ with respect to that basis. Obviously, the basis won't be unique. Can anybody suggest what tools in Sage might be useful for this calculation? |

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2019-01-23 19:24:03 +0200 | answered a question | Multiplying Roots of a Polynomial You can also get exact results by using the Algebraic Field In Sage 8.4, I'd also suggest setting |

2018-06-15 04:38:16 +0200 | commented answer | How to access variables from libsingular? I wasn't able to get it working using only the Singular language. libsingular prohibits subroutines changing the basering, and I couldn't figure how to access the variable without changing the basering. @nbruin seems to be right - something in cython/C is probably required. |

2018-05-25 21:44:05 +0200 | commented answer | How to access variables from libsingular? I was hoping for something else, but your suggestion (write a wrapper function) might be the most practical solution. |

2018-05-23 23:47:38 +0200 | asked a question | How to access variables from libsingular? I have some Sage code that works using the expect interface, and I'm trying to port it to The Singular function in question ( Anybody know how to do this with |

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2018-04-13 23:30:04 +0200 | asked a question | Mapping between isomorphic NumberFields If I set up two NumberFields that differ only in the variable used in their defining polynomials, they don't report equal: sage: a=QQ['a'].0 sage: aRing = NumberField(a^2 + 1, 'a') sage: sage: b=QQ['b'].0 sage: bRing = NumberField(b^2 + 1, 'a') sage: sage: aRing is bRing False This I can live with. But shouldn't I be able to convert elements between them? sage: aa=aRing.0 sage: bb=bRing.0 sage: bRing(aa) TypeError: No compatible natural embeddings found for Number Field in a with defining polynomial b^2 + 1 and Number Field in a with defining polynomial a^2 + 1 I can convert like this: sage: bbb = aa.polynomial()(bb) sage: bbb.parent() == bRing True ...but this seems awkward, and requires defining an auxilary function if you want to pass it to map or map_coefficients. Is this a bug? Should I report it on Sage's Trac, or is there a good reason for this? |

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