20190210 11:42:12 0600  received badge  ● Nice Question (source) 
20190210 06:57:48 0600  edited question  Use colormap for a 3dlistplot? How can I plot a list of points in space where the points are colored by their height? The following code: produces the following error: 
20190208 02:29:45 0600  edited question  draw all faces of alcoves (affine root system) I am trying to plot alcoves for in a rank 3 affine root system with some of those alcoves highlighted by having all faces drawn and the others only shown as a wire frame. The manual on visualising root systems at sagemath.org is quite useful, but I have some effects show that I don't understand. For some reason while the fundamental alcove will have all faces shown many of the others have not, that is, some faces are missing. Below you find one example code that I have done. For the chosen seq one face is missing, the red one. For other choices of seq one might even see only one face drawn. How do I force to have all faces shown? 
20190205 14:00:00 0600  commented question  What does the [ File " " , Line 1, in < module > ] error mean? This looks like the error that appears when calling "var" inside python, not inside sage.. 
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20190204 13:01:46 0600  answered a question  Problem with Padé approximation Here is what I get with sage 8.7.beta2. This seems to be correct. Which version of sage are you using ? 
20190127 09:09:04 0600  answered a question  codimension of an ideal or free submodule Like that 
20190119 02:46:07 0600  commented question  weird behavior quotient operator try ZZ(test)//2 
20190119 02:45:43 0600  edited question  weird behavior quotient operator Hello, i am calculating the quotient of a really big number using the operator // the fact is: if the big number is in a variable, let's say x, and i write x//2, it won't work (it'll return x/2). But if i copy/paste the big number and write //2 at the end, it works. I don't understand it. I wanted to post a picture as example, but it seems that i need more karma to do it... so instead i put a copy/paste of the problem at the end of this post. The variable's name is "test", so i first print it, then do the //2; as you can see it doesn't work, i got the same number with /2 at the end. Then i copy/paste the number and use //2 again and here it works. The point is: when i use it in a programm, i can't copy/paste the number, it'll be in a variable. And then it fails. 
20190117 02:54:02 0600  commented question  How can I solve the following (linear) differential equation? giac gives an answer, but this answer fails to be converted to sage 
20190115 09:59:43 0600  commented question  sage 8.5 windows jupyter can't work What can not be decoded is 未命名 
20190115 09:57:52 0600  edited question  sage 8.5 windows jupyter can't work i use a windows laptop with Chinese. i download the windows installer, and install the sage 8.5 successfully. it can run sage(shell) correctly, but when i launch the jupyter, something wrong with it. "sage n" use the cmd to start a server, i got so i try some solutions, i can skip this step, but i got stuck in the jupyter launch step: i know there is something wrong with the coding in python (and there are many problems when software operate with Chinese), but i can't find the right way to solve it 
20190110 10:22:29 0600  commented question  Is it possible to import machine learning libraries in Sage? or more precisely in the python used by sage, which can be the system's python, depending on the way you installed sage. 
20190110 04:25:21 0600  commented question  Number of elements in vector This can be found using len(v) 
20190110 01:57:27 0600  commented question  Is it possible to import machine learning libraries in Sage? you can import any python module that is installed in sage's own python. 
20190109 02:32:22 0600  edited answer  How to format posts on this forum? Not exactly Markdown, but close to it, you can discover the syntax by editing a post and clicking on the icons on top of the edit section (e.g. B, I, planet, ", 101010, picture,...). For example bild is obtained with **, italic with *, and so on. Regarding formatting Sage, you can have a monospaced code either with the button 101010, or by adding 4 spaces at the beginning of very code line. I edited your other question, you can check the markup by editing it. 
20190104 03:03:04 0600  edited question  Torsion subgroups of Jacobian over fields bigger than rationals. I am interested to compute: ``torsion subgroups of Jacobian abelian variety J_0(p^2) defined over fields bigger than rationals." The command: Upto p=11 it is fine after that if you give gives the error: Can somebody kindly tell me why Sage can compute upto p=11? 
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20181230 04:19:42 0600  commented question  What is the .modulus() function doing? See 
20181221 01:17:08 0600  commented question  Error in SageMath Code which crash my PC syntax error, the brackets are not right. You are trying to iterate over QQ... 
20181220 11:41:04 0600  edited answer  Is it possible to use python3? The longterm plan is to move Sage to Python 3. Here's a couple Trac metatickets that show the progress:
In the mean time, just be aware of the major changes between the two versions and write Python 3compatible code as much as possible. 
20181220 11:40:25 0600  edited question  Is it possible to use python3? I just learnt python3. But i came to know after installing sage that it use python2? Do I have a future in sage? I don't prefer to use the cloud, but the package i have?

20181218 02:59:52 0600  commented question  Global Dependency in Polyhedron Volume There is a known issue with volume computations when coefficients are in RR. Try if possible to use coefficients in QQ. See https://trac.sagemath.org/ticket/18214 for the known bug. 
20181211 13:09:15 0600  answered a question  Overloading the binary operation of symmetric groups to reverse the order Well, this is sort of a known problem.. https://trac.sagemath.org/ticket/14885 There is something for permutations: But this does not seem to be available for SymmetricGroup. 
20181211 02:48:49 0600  commented question  Norm in UniversalCyclotomicField Maybe using to make your own norm method for vectors ? 
20181211 02:46:36 0600  commented question  Viewer 3D issues Which version of sage ? Which OS (windows© or not windows©) ? How did you install sage ? etc.. 
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20181203 14:22:56 0600  commented question  Get bit representation of an elliptic curve group element Maybe like that: 
20181203 14:21:43 0600  commented question  How to get the collection of all functions from X to Y in SageMath Like this: 
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20181203 04:48:18 0600  commented question  gaussLegendre quadrature Did you look at the doc: numerical_integral? 
20181127 13:09:59 0600  commented question  TypeError with graphs.RandomGNP typical sage+python3 error ; already fixed in the latest beta 
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20181108 14:46:13 0600  answered a question  Are subtypes of Cartan types implemented correctly? It seems that currently the index set for reducible types can only be consecutive integers starting from 1. This is displayed also in the following example So there is certainly room for improvement here. 
20181026 08:16:28 0600  commented question  Indefinite integral is incorrect in 8.5.b0: 
20181025 10:18:02 0600  answered a question  How to define this polynomial? Use something like that 
20181023 09:30:16 0600  commented answer  Cannot get threejs rendering to work on MacOS The threejs works very well for me with a python3built sage (on Ubuntu). 
20181012 08:14:09 0600  commented question  Polynomial interpolation given a mathematic function f(x), an interval [a,b] and a natural number n your px and py should be vectors, not matrices. Use vector(list2(2,5,6)) 
20181009 11:05:08 0600  commented answer  Is it possible to run (may be partially) Sage with Python 3? You should not use "make" for the moment. 
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20181008 03:40:52 0600  commented question  Python3 MigrationStatus 
20180919 11:00:04 0600  answered a question  Enumerating prime ideals in SAGE Like that maybe 