# User Portlet

Patrick Scheibe
Discussions
Have you tried for instance [this solution](https://askubuntu.com/questions/900585/in-16-04-how-to-turn-off-the-gray-darken-feature-when-a-window-system-is-busy)?
*Click image to zoom in. Use browser back button to read further.* ---------- [![enter image description here][2]][2] Over the Christmas holidays, I finally found some time to test out something I had in mind for a while: Creating an...
## How to cite Rubi If you want to cite Rubi in your scientific work, you can now refer to the official paper in the Journal of Open Source Software we have prepared in the last 2 months. ...
Nope, at least right now, I wouldn't know how to do this. The term (1 - 3 z^2) is a dealbreaker. If you use a*z^3 instead, an analytic solution is possible, but with your original expression, there are two terms including FresnelC that neither...
Since your package came up in several discussions so far and most notably [in this highly discussed post on StackExchange](https://mathematica.stackexchange.com/q/169209/187), I'd like to leave some words. There are two things I appreciate in your...
Syntax highlighting for prettifying online or offline code is widely used today. Here on Wolfram community, we use a [plugin for the google-code-prettify](https://github.com/halirutan/Mathematica-Source-Highlighting) framework that I initially hacked...
You are mistaken and this is an excellent question to understand a small portion of the "Main Evaluation" that happens in every single Mathematica call. Let's start with a very simple expression Print[1+1] Why do you think Mathematica...
You can turn a number into a list of its digits using IntegerDigits. If you do that on all your numbers, you have a list where each element is a list of digits. Then you can Flatten this list to get one long list of digits. After that, you...
For starters: a1 = 1.5; a2 = 3; a3 = 6; X = 1000; \[Lambda] = 0.01; R = Range[-10.01, 10.01, 0.1]; I1[R_] := (BesselJ[1, 2*Pi*a1*(R/(\[Lambda]*X))]/(2*Pi*a1*(R/(\[Lambda]*X))))^2; I2[R_] := (BesselJ[1,...
Hey Wolfram Team, the presentations of the [WTC 2017 are online](https://www.wolfram.com/events/technology-conference/2017/presentations/#wednesday). Unfortunately, the one I was most excited about is not available ...