2019-01-08 08:07:36 -0600 | commented question | Sage Notebook IOPub data rate exceeded error? Jupyter has been updated to version 5.7.1 in SageMath 8.5, which has been released on 20 December. Maybe it is worth to try with SageMath 8.5 if you have not already done it. |

2019-01-08 08:00:09 -0600 | edited answer | Calling Sage from Java Hello CupOfCoffee, First some caveats: I don't use windows and I've never tried to connect sage to java. I think you should be able to run programs in Java with ProcessBuilder (https://docs.oracle.com/javase/6/docs...). I expect you'd need to pass some parameters to sage to get it working correctly. Here are some relevant links: - https://stackoverflow.com/questions/5... - StackOverflow question on passing parameters to ProcessBuilder
- http://doc.sagemath.org/html/en/refer... - Command line options for sage
Then I would think you would want to pass and read commands to Sage through input/output to the process. There is a StackOverflow question addressing this here: https://stackoverflow.com/questions/1... I imagine if you want to just do what you are suggesting, this wouldn't be too bad, but if you want to do something more complex, dealing with the input/output could be a pain. Best, Pat PS. Sorry for mangling the links. The post wouldn't go through without it. |

2019-01-08 07:56:18 -0600 | answered a question | Can't display figures It looks like libtk8.6 is not installed on your system. Can you install the Ubuntu package |

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2019-01-01 10:46:06 -0600 | answered a question | Sage Python Executable On Linux I would say |

2018-12-17 19:23:26 -0600 | commented answer | Can I alias a sage command? As explained by @nbruin, |

2018-12-15 07:55:49 -0600 | answered a question | Wrong Pointer Thanks for pointing this! The link has been corrected. |

2018-12-15 07:54:36 -0600 | commented question | Velocity of time The 3d plots display correctly for me. Which browser are you using? |

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2018-12-04 06:32:22 -0600 | answered a question | Sagemanifold - Connection components from a tensor (not a metric) If you consider a non-symmetric "metric", you should probably define a function with a code similar to that of the method LeviCivitaConnection.coef() (starting at line 388 of |

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2018-11-25 11:43:30 -0600 | commented answer | .canonicalize_radical() produces incorrect result I would say it is pretty safe to use to have some sqrt simplification be done correctly. |

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2018-11-24 11:22:32 -0600 | answered a question | .canonicalize_radical() produces incorrect result A solution is to use More generally, you can use |

2018-11-22 08:31:44 -0600 | commented question | Tensor density in sagemanifolds? Btw, if you would like to implement tensor densities, please visit https://sagemanifolds.obspm.fr/contri.... |

2018-11-22 07:20:46 -0600 | commented question | Assignation of components of a differential form (or multivector field) in sagemanifold Yes, please provide some example. Note that when you assign components to a tensor with symmetries, it suffices to assign the minimal number of independent components, the other components are then set by (anti)symmetry. |

2018-11-22 07:16:29 -0600 | commented question | Tensor density in sagemanifolds? Yes I confirm that tensor densities are not implemented yet. In particular, the method |

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2018-11-19 06:54:18 -0600 | answered a question | integration - StopIntegration support? You can do it by setting the attribute gives You can plot the obtained solution by and check that it indeed stops at For more details, see the documentation of solve_ivp. |

2018-11-18 14:06:10 -0600 | answered a question | SageManifolds different frames The result of whereas the components returned by Same thing for the vector agrees with while agrees with |

2018-11-08 10:48:17 -0600 | answered a question | Defining functions over symbolic domains A solution is to use the symbolic function |

2018-11-08 10:40:41 -0600 | commented answer | Killing vectors Not to my knowledge. It would be a nice addition to Sage to express the Killing equation as a system of linear 1st order PDEs and attempt to solve those. |

2018-11-07 01:14:12 -0600 | answered a question | Restriction of domain of vector field A solution is to transform the implicit graph into a curve and to use the method See this page for help/tutorials on vector fields with Sage. |

2018-11-06 06:25:30 -0600 | commented question | how to get the transformation matrix for a transformation over 4x4 matrices? The error message is triggered by which is quite weird, because So I would say it is a bug in |

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2018-10-31 04:59:52 -0600 | answered a question | Symbolic Taylor expansion You can do $\frac{1}{6} {\left(a_{1}^{3} \frac{\partial^{3}}{(\partial x)^{3}}f\left(x\right) + 6 a_{1} a_{2} \frac{\partial^{2}}{(\partial x)^{2}}f\left(x\right) + 6 a_{3} \frac{\partial}{\partial x}f\left(x\right)\right)} \mathit{dt}^{\frac{3}{2}} + a_{1} \sqrt{\mathit{dt}} \frac{\partial}{\partial x}f\left(x\right) + \frac{1}{2} {\left(a_{1}^{2} \frac{\partial^{2}}{(\partial x)^{2}}f\left(x\right) + 2 a_{2} \frac{\partial}{\partial x}f\left(x\right)\right)} \mathit{dt} + f\left(x\right)$ |

2018-10-25 02:52:22 -0600 | answered a question | How to realize the composition of rational function mappings with Sagemath? In addition to @slelievre 's answer, a possibility is to consider f and g as functions on the Euclidean plane: Then you may compose f and g via the Note that the result is automatically simplified. You may access to the symbolic expressions composing the result via the method |

2018-10-23 13:35:17 -0600 | commented answer | Cannot get threejs rendering to work on MacOS In console mode yes, but not in the Jupyter notebook: one gets |

2018-10-22 17:55:06 -0600 | commented answer | Error while compiling sage 8.3 on Ubuntu 16.04 In the log, |

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2018-10-22 11:55:19 -0600 | answered a question | Cannot get threejs rendering to work on MacOS It seems that you are using a version of SageMath built with Python3. Alas, Python3 SageMath is not fully ready yet (see this question for a status update, and in particular the ticket #26212). In particular, the |

2018-10-22 11:44:54 -0600 | answered a question | Error while compiling sage 8.3 on Ubuntu 16.04 From your logs, it seems that you are trying to compile Sage on an external media, with some permissions which are not suitable, like
Basically, after having checked that you have all these Ubuntu prerequisites, you should type, from e.g. your home directory possibly adapting the |

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2018-10-11 09:11:24 -0600 | answered a question | How to convert an integer to fixed length binary string in Sage? Sage's preparser (*) turns To enforce the original (Python) xor behavior, use (*) see the answer to this question. |

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2018-10-11 06:46:24 -0600 | answered a question | How to edit pixel values of color image in SageMath? This is because Sage's preparser transforms the More generally to check what Sage's preparser is doing with things you type, use the ( |

2018-10-07 07:34:57 -0600 | answered a question | error with importing sage into a python file A solution is run Sage's Python (instead of your system's Python): Equivalently, you can run Python from Sage shell: Then all Sage's environment variables are automatically set and |

2018-10-02 04:52:40 -0600 | commented question | Error: 'Object has no attribute 'intersection'' I cannot reproduce your issue with SageMath 8.3 since the step Which version of SageMath are you using? |

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2018-10-01 08:09:01 -0600 | answered a question | show(LatexExpr(" \frac{x}{\cos(x)}")) need 2 \\ Yes, that's normal: the backslash character in a string is interpreted as an escape character for special commands; for instance |

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