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2021-09-21 05:10:36 +0100 | edited answer | Unable to link Jupyter notebook to correct kernel The fix I found was to remove the folder sagemath from the following folder: /Users/williamorrick2/Library/Jupyter/kern |

2021-09-21 05:06:25 +0100 | marked best answer | Unable to link Jupyter notebook to correct kernel A while ago I installed sage version 9.1 on my MacBook Pro running MacOS Mojave 10.14.6. That installation was from binary and was made in the MacOS Applications folder. Today I tried to install sage version 9.4, compiling from source. The install was in a subfolder of my user folder. The install seems fine, and I am able to run sage 9.4 from the command line. Now I am trying to run 9.4 in a Jupyter notebook. After typing or in the root directory of my new installation things start well—the following banner comes up in the terminal, —but when the notebook opens (either in Jupyter notebook or in Jupyterlab) the kernel is sage 9.1 rather than 9.4. Furthermore I am unable to execute any code. In the terminal, immediately following the lines quoted above, I get a bunch of messages like which suggest that Jupyter is running the old kernel in the Applications folder, and that it is looking for python2 under my new installation, which only contains python3. How do I go about correcting this? |

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2021-09-19 04:03:15 +0100 | commented question | Unable to link Jupyter notebook to correct kernel Thinking about this some more, perhaps it makes sense. I started up sage 9.4 in my local user directory, which then star |

2021-09-19 00:29:38 +0100 | commented question | Jupyter notebook slow to load and unresponsive Update: I upgraded from jupyter-notebook 5.7.6 to jupyter-notebook 6.1.1 and still just as slow. Will try to find time t |

2021-09-19 00:23:16 +0100 | edited answer | Unable to link Jupyter notebook to correct kernel The fix I found was to remove the folder sagemath from the following folder: /Users/williamorrick2/Library/Jupyter/kern |

2021-09-19 00:22:27 +0100 | commented question | Unable to link Jupyter notebook to correct kernel My problem has been solved--see my answer and the better answer of Masacroso--but one mystery remains, namely why my sag |

2021-09-18 16:40:23 +0100 | commented answer | Unable to link Jupyter notebook to correct kernel Thanks. The install part wouldn't have been necessary in my case because the sage installation takes care of that. But " |

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2021-09-18 04:52:22 +0100 | edited question | Unable to link Jupyter notebook to correct kernel Unable to link Jupyter notebook to correct kernel A while ago I installed sage version 9.1 on my MacBook Pro running Mac |

2021-09-18 00:57:01 +0100 | answered a question | Unable to link Jupyter notebook to correct kernel The fix I found was to remove the folder sagemath from the following folder: /Users/williamorrick2/Library/Jupyter/kern |

2021-09-17 12:55:03 +0100 | edited question | Unable to link Jupyter notebook to correct kernel Unable to link Jupyter notebook to correct kernel A while ago I installed sage version 9.1 on my MacBook Pro running Mac |

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2021-09-17 12:51:54 +0100 | commented answer | Unable to link Jupyter notebook to correct kernel Thanks for your message. In my old installation I never ran sage from the command line--I had a sage icon in my dock and |

2021-09-17 12:40:22 +0100 | edited question | Unable to link Jupyter notebook to correct kernel Unable to link Jupyter notebook to correct kernel A while ago I installed sage version 9.1 on my MacBook Pro running Mac |

2021-09-17 01:47:10 +0100 | commented question | Jupyter notebook slow to load and unresponsive @rburing Thanks for trying to reproduce the issue and for your suggestions. I'm trying a new version of sage (which cont |

2021-09-17 01:44:30 +0100 | commented question | Jupyter notebook slow to load and unresponsive @EmmanuelCharpentier I think I now have a more precise description of my problem, but no real diagnosis that might be he |

2021-09-17 01:35:47 +0100 | asked a question | Unable to link Jupyter notebook to correct kernel |

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2021-09-16 04:51:18 +0100 | edited question | Jupyter notebook slow to load and unresponsive Jupyter notebook slow to load and unresponsive At some point one of my SageMath Jupyter notebooks became very slow to re |

2021-09-16 03:55:31 +0100 | commented question | Jupyter notebook slow to load and unresponsive I'm not doing any LaTeX rendering - just plain text. It's funny because notebooks of ten times the file size with lots o |

2021-09-15 04:51:54 +0100 | commented question | Jupyter notebook slow to load and unresponsive Thanks for this suggestion. I have started to do this, and so far any differences are minor. I'm beginning to suspec, ho |

2021-09-14 15:44:57 +0100 | edited question | Jupyter notebook slow to load and unresponsive Jupyter notebook slow to load and unresponsive At some point one of my SageMath Jupyter notebooks became very slow to re |

2021-09-14 15:44:19 +0100 | asked a question | Jupyter notebook slow to load and unresponsive Jupyter notebook slow to load and unresponsive At some point one of my SageMath Jupyter notebooks became very slow to re |

2021-08-31 00:57:55 +0100 | edited question | support() and coefficients() in combinatorial free modules support() and coefficients() in combinatorial free modules I was surprised that in the code below I could not count on t |

2021-08-29 23:06:13 +0100 | commented question | support() and coefficients() in combinatorial free modules I should have tried expr.coefficients()? first, to see what help was available. This provides me with "'sort' -- (defaul |

2021-08-29 23:01:38 +0100 | commented answer | support() and coefficients() in combinatorial free modules Interesting that the behavior may be version or platform dependent. The dictionary method does seem to be the better way |

2021-08-29 23:01:17 +0100 | commented answer | support() and coefficients() in combinatorial free modules Interesting that the behavior may be version or platform dependent. The dictionary method does seem to be the better way |

2021-08-29 22:57:32 +0100 | commented question | support() and coefficients() in combinatorial free modules I should have tried expr.coefficients()? first, to see what help was available. This provides me with "'sort' -- (defaul |

2021-08-29 22:57:16 +0100 | commented question | support() and coefficients() in combinatorial free modules I should have tried expressions.coefficients()? first, to see what help was available. This provides me with "'sort' -- |

2021-08-29 22:20:58 +0100 | commented question | support() and coefficients() in combinatorial free modules expr.monomial_coefficients() looks like the right approach; I've managed to use it to set up a sparse matrix and solve m |

2021-08-29 05:02:37 +0100 | asked a question | support() and coefficients() in combinatorial free modules support() and coefficients() in combinatorial free modules I was surprised that in the code below I could not count on t |

2021-01-20 20:52:29 +0100 | commented question | Tensor product of elements of non-free algebras Thanks. I've been trying (with difficulty) to follow the discussion there, and there seems to be some question about whether tensor() is even supposed to be defined on elements. I did find examples in the documentation here and here. But maybe it's not defined for every type of algebra? If not, is this something that is feasible for a user to define themselves? |

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2021-01-19 21:04:27 +0100 | asked a question | Tensor product of elements of non-free algebras In SageMath 9.1 I am unable to execute the code which is copied verbatim from this answer posted back in 2012. Instead, I get AttributeError on the tensor command. Is there some ingredient I'm missing? More to the point, I am unable to run which is the code I'm actually interested in. In this instance I get AssertionError on the tensor command. Is there some restriction on using tensor on non-free algebras? The code below executes fine: |

2021-01-08 17:39:18 +0100 | commented answer | tensor_product of matrices over cyclotomic field Thanks for creating these tickets and for the sample code. I learned a lot about Python and Sage by studying them. |

2021-01-08 17:38:06 +0100 | marked best answer | tensor_product of matrices over cyclotomic field Beginner question: I have created some matrices over a cyclotomic field and attempted to compute some of their tensor products: If I uncomment either of the last two lines I get
It seems my code is working when both matrices in the tensor product are rational or when self is non-rational, but not when self is rational and the argument is non-rational. Should I be somehow instructing sagemath to regard self as a matrix over the cyclotomic field? |

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