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2015-03-14 21:56:42 +0100 | commented answer | Recurrent definiton of a function Great, adding resolved the problem. Thanks a lot! |

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2015-03-14 21:37:35 +0100 | commented question | Recurrent definiton of a function @vdelecroix, Thanks, I should have stated the problem more explicitly. I've added the setup to the question. |

2015-03-14 20:45:32 +0100 | asked a question | Recurrent definiton of a function Hi, I am trying to compose a code for calculating the numbers H01 defined as a sum of the following recursively defined numbers: I ended up with the following code: And here problems start. If I just type it produces the incorrect value 27/8. But if I type it results the correct tuple (7/6, 15/4). So how to fix the code ? Thanks in advance for any help. |

2014-11-17 00:36:39 +0100 | commented question | plotting a plane section in sage @tmonteil Sorry for misleading notation. X, y and z are functions in two variables p and q. |

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2014-11-14 21:55:50 +0100 | asked a question | plotting a plane section in sage Suppose I have a parametric surface given by three functions in two variables. Moreover, this surface is immersed in a solid torus like for some a and R. How can one plot a section of the surface by a plane with Sage? |

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