20240223 17:40:11 +0200  received badge  ● Notable Question (source) 
20231104 19:36:04 +0200  received badge  ● Famous Question (source) 
20230729 12:19:30 +0200  received badge  ● Notable Question (source) 
20230702 12:40:18 +0200  received badge  ● Popular Question (source) 
20230702 12:40:12 +0200  received badge  ● Popular Question (source) 
20230526 00:09:41 +0200  received badge  ● Nice Question (source) 
20221017 17:21:19 +0200  answered a question  How to add latex itemize environment in sagemath markdown cell. With a single dash as first character in the line. More info: https://www.markdownguide.org/basicsyntax/#unorderedlist 
20221010 10:44:37 +0200  marked best answer  Integrating an integral Hi community. I'm interested in manipulating a formal expression $$\int \mathrm{d}t \; e^{ 2 \int \mathrm{d}t \; h(t)}.$$ My notebook contains the following code but the result is QUESTION(S):

20221010 10:34:52 +0200  answered a question  Integrating an integral Thanks to the comment by @fredericc I found the answer! The solution is to use the algorithm='maxima' flag, e.g. var('t 
20221009 17:40:21 +0200  received badge  ● Nice Question (source) 
20221009 10:34:55 +0200  asked a question  Integrating an integral Integrating an integral Hi community. I'm interested in manipulating a formal expression $$\int \mathrm{d}t \; e^{ 
20220516 12:36:44 +0200  received badge  ● Notable Question (source) 
20220126 04:06:53 +0200  received badge  ● Popular Question (source) 
20220102 20:55:01 +0200  received badge  ● Taxonomist 
20211022 10:27:39 +0200  received badge  ● Notable Question (source) 
20211015 17:12:09 +0200  received badge  ● Popular Question (source) 
20210529 13:30:09 +0200  received badge  ● Popular Question (source) 
20210518 03:35:09 +0200  received badge  ● Popular Question (source) 
20210115 20:07:10 +0200  received badge  ● Famous Question (source) 
20201216 22:03:13 +0200  received badge  ● Popular Question (source) 
20200907 21:31:12 +0200  received badge  ● Nice Question (source) 
20200520 05:37:53 +0200  received badge  ● Famous Question (source) 
20190730 10:47:49 +0200  marked best answer  Differential forms and tensors Dear all, A long time ago I was trying to implement a SAGE code for working with Differential Forms with values in a certain Lie algebra, but due to my lack of programming knowledge, I couldn't. This kind of objects are important for working with nonAbelin gauge theories. Question Is it possible to define and work with those objects? So far there is no reference of it in the manual. Thank you! 
20190520 14:11:07 +0200  marked best answer  Size of Labels on a Plot dear all: I'd like to know if there is any way to change the size of the font of labels (in a plot) without changing the size of the numbers on the ticks. Thank you 
20190520 14:02:27 +0200  received badge  ● Famous Question (source) 
20190517 21:46:48 +0200  commented answer  Restricting a variable to a (real) range Thank you @dsejas Yes, your comment was incredible useful! It drove me to a nice solution. Since I had a lot of assumptions, I was trying to find a way to drop the last assumption (still don't know it possible), and looking for that I found the 
20190517 16:18:03 +0200  asked a question  Restricting a variable to a (real) range Hi. I'm solving a differential equation which depends on two parameters $c1$ and $c2$. They are both positive but in order to solve the equation, assume(c2  3 > 0) the equation is solved; But imposing Question Is it possible to set a condition like 
20190514 09:41:24 +0200  asked a question  Solving an ODE and simplifying the result I'm interested in solving the differential equation $$3 h' + 3 h^2 = c_1,$$ where $c_1$ is a positive real number. The above code works, but it's not solved explicitly for $h$, so This gives something like $$h\left(t\right) = \frac{\sqrt{3} \sqrt{c_{1}} {\left(e^{\left(\frac{2}{3} \, \sqrt{3} C \sqrt{c_{1}} + \frac{2}{3} \, \sqrt{3} \sqrt{c_{1}} t\right)} + 1\right)}}{3 \, {\left(e^{\left(\frac{2}{3} \, \sqrt{3} C \sqrt{c_{1}} + \frac{2}{3} \, \sqrt{3} \sqrt{c_{1}} t\right)}  1\right)}},$$ in sage notation (nonLaTeX) it starts like Question 1: Is there a way to allocate to the solution (i.e. I had to set by hand (it is ease, but it would be nice to automatize the allocation) Then, by simply looking at the solution it is clear that it can be simplified. I tried things like but none of them returns the expected result, which could be obtained from Mathematica's kernel $$ \sqrt{\frac{c_1}{3}} \tanh\left( \sqrt{\frac{c_1}{3}} (t  3 c_2) \right) $$ Question 2: How could the expression 
20190208 13:26:30 +0200  received badge  ● Popular Question (source) 
20181204 09:18:37 +0200  asked a question  Sagemanifold  Connection components from a tensor (not a metric) Dear community. This might sound dump, but I'm trying to determine whether a tensor satisfy the properties of a metric (under certain conditions). Of course it is a (0,2)symmetric tensor, call it $S$, but I cannot (to my understanding) calculate the (LeviCivitalike) connection components that would be associated to $S$... unless I declare it as a metric. The way it is implemented makes sense... and it's solid! What I did...?I defined like a metric and calculate the associated connection (and curvatures) Why should I do something else?In the file Question:Is this possible? 
20181204 08:34:54 +0200  commented answer  How to get the collection of all functions from X to Y in SageMath Thanks for the theory! 
20181203 22:15:00 +0200  received badge  ● Nice Question (source) 
20181203 19:20:48 +0200  commented answer  Subtitute functions  in a differential equation  Sagemanifold hehehehe... Thank you again! I almost got it... but I tried 
20181203 19:18:45 +0200  marked best answer  Subtitute functions  in a differential equation  Sagemanifold Dear community, I have a differential equation that depends on a function $\xi(t)$, but is a component of a tensor (calculated with I'd like to define the restriction to $\xi = 0$, and assign it to a new tensor but I get an I know that it works for functions QuestionIs there a way to substitute functions that are not 
20181203 19:18:05 +0200  commented answer  Sagemanifold  `only_nonredundant = True` by default Excellent! Thank you for the answer, and a wonderful use of the 
20181203 19:17:27 +0200  marked best answer  Sagemanifold  `only_nonredundant = True` by default Hi, I find the option 