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2020-01-08 21:05:47 +0200 | asked a question | SageMath-9.0.app fails to start on macOS 10.14.6 Happy New Year Hi, SageMath-9.0.app fails to start on macOS 10.14.6 : - the file:///Applications/SageMath-9.0.app/Contents/Resources/loading-page.html appears on Firefox
- the log file says :
/Applications/SageMath-9.0.app/Contents/Resources/sage/src/bin/sage: line 617: exec: python3: not found
However, everything works fine in a term window /Applications/SageMath-9.0.app/Contents/Resources/sage/sage --notebook=jupyter copy and paste one of these URLs: http://localhost:8888/?token=688ebf86...
Can anyone help ? Thank you |

2019-04-12 21:26:19 +0200 | commented answer | multiprocessing.Pool does not work Thank you ! |

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2019-04-12 19:50:35 +0200 | asked a question | multiprocessing.Pool does not work Hi, when trying to run SM_black_hole_rendering.ipynb with sagemanifols the cell 28 does not execute well
Can anyone help ? Thank you Epi |

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2018-08-22 17:30:44 +0200 | commented answer | su2 matrix exponentiation Thank you for your answer. I have added these sage commands for checking the expected result (exp(tX)=cos(t) It is surprising that the sage exp cannot perform it. |

2018-08-22 17:29:20 +0200 | answered a question | su2 matrix exponentiation Thank you for your answer. I have added these sage commands for checking the expected result (exp(tX)=cos(t) |

2018-08-22 13:57:53 +0200 | asked a question | su2 matrix exponentiation Hi, does anyone know if sage math is able to successfully calculate exp(G) where G belongs to su(2) ? The sagemath commands are given below : exp(G) returns the following error code :
Thank you for helping. Epi |

2018-01-26 20:06:35 +0200 | commented question | integral(rho*sqrt(1/(-m*sin(u)^2 + 1)),(u,0,x)) gives a wrong answer rho is a constant returns |

2018-01-25 22:16:50 +0200 | asked a question | integral(rho*sqrt(1/(-m*sin(u)^2 + 1)),(u,0,x)) gives a wrong answer HI everybody, returns Expected answer is Does anyone know how to fix this ? Thank you. |

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2017-06-08 21:49:42 +0200 | answered a question | integrate x^3/(exp(x)-1) between 0 and infinity Before proceeding, I have installed the giac package 1.2.3.25
returns
even after restarting SageMath What would you advice ? Thank you. |

2017-06-08 19:56:33 +0200 | asked a question | integrate x^3/(exp(x)-1) between 0 and infinity If I type
The command numerical_integral(x^3/(exp(x)-1),0,infinity) gives 6.4939394075 I have two questions : - How do I evaluate the limit ?
- The correct answer is pi^4/15(=6.49393940226683) : why SageMath does not give it with symbolic integration ?
Thanks |

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2016-11-27 17:41:11 +0200 | asked a question | simplifying ( x^beta )^( (mu - Lambda) / ( mu -2)) * x ^ ( alpha - beta + 4) is not satisfactory The SageMath commands donot give the correct answer which I would expect that is g(x) Does anyone know why ? Here is what I would expect Here is what SageMath answers : It does not mix the exponants of x in the numerator with those of x in the denominator. Thank you Philippe |

2016-11-27 17:33:16 +0200 | commented question | simplifying ( x^beta )^( (mu - Lambda) / ( mu -2)) * x ^ ( alpha - beta + 4) This is what I would expect : instead of Thank you Philippe |

2016-11-27 17:32:16 +0200 | answered a question | simplifying ( x^beta )^( (mu - Lambda) / ( mu -2)) * x ^ ( alpha - beta + 4) This is what I would expect : instead of Thank you Philippe |

2016-11-27 14:30:06 +0200 | asked a question | simplifying ( x^beta )^( (mu - Lambda) / ( mu -2)) * x ^ ( alpha - beta + 4) the sage command does not give the correct answer g(x) does anyone know why ? thank you Philippe |

2015-05-08 16:46:39 +0200 | edited question | unable to solve([x^2+y^2==4, (y-y0)^2+z^2==4], [x, y, z]) here is the script: but if: gives the expected answer: With parameter y0, I would expect: Thank you for helping me. |

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