# All Questions

467 views

### For loop with steps other than 1

I would like to do a For loop with a jump 2*Pi instead of 1. For[j = 0, j <= nmax, (incr = 2 Pi), ...] Actually what I want to do is ...
218 views

### How to evaluate all the essentially distinct polynomials in 4 variables over $F_2$ on points of $F_2 ^ 4$

I am a beginner with Mathematica. For my research purpose I would like to get a list of all the polynomials in $F_2[x,y,z,w]$ and for each polynomial I would like to know the result that it gives then ...
448 views

2k views

### How do I simplify a vector expression?

I am doing vector analysis. I have figured out that the following expression won't be simplified in Mathematica: Simplify[Dot[x, y] - Dot[y, x]] I think the ...
366 views

### Counting the number of a specific type of permutation

In the theory of cumulants of vector-valued random variables, the following types of formulas appear: \theta^i \theta^{jk} [3] = \theta^i \theta^{jk} + \theta^j \theta^{ik} + \theta^k ...
447 views

### Dropping n consecutive terms from a list periodically

Suppose I have the following list lis = Range[100]; and I want to remove n consecutive terms periodically from the list. For example suppose I want to drop terms ...
207 views

### Why FrontEnd`KernelExecute doesn't work in KeyEventTranslations.tr?

Which commands can you put in KeyEventTranslations.tr ? There is an extensive list of FrontEndTokens, but what else can you use? Why something like this doesn't ...
306 views

### Evaluating FindRoot at different starting points on a grid

I'm trying to evaluate the roots of a complex function at different starting points on a grid using Do[Do[FindRoot[g[z], {z, j + k*I}], {j, 10}], {k, 10}]. However, ...
175 views

### Issue with ListConvolve

I am a new Mathematica user, learning the intricacies of functional programming. I have issues withe applying a function over a moving list. My function seems to work and give correct results but it ...
513 views

### How make f[{x,y}] evaluate as f[x,y]?

I frequently encounter the situation where I have a function of two real variables defined, e.g.: f[x_, y_] := 9 - x^2 - y^2 But then I need to feed into ...
120 views

### Detect Standalone CDF vs Browser Plugin environment [duplicate]

Recently, Wolfram informed me that there's no way to have a Print button in a CDF running within a plugin environment since the plugin does not interact with the operating system. If you have a way to ...
184 views

### How can I add a background to a stylesheet?

In version 9 we can set the background to an image, however I'd like to save this into a stylesheet that can be installed.
704 views

### How to change coordinates of integration?

Is there some built-in routine, some easier method to change variables of integration, without/before solving the integral? Say I have ...
130 views

### Plotting an array of data onto a sphere [duplicate]

See the link to plot at the bottom of this post, it is a function of the spherical coordinates theta and phi. It is generated by MatrixPlot of an Array of data. I would like to plot this onto a sphere ...
### Is there an $n^{\text{th}}$ root function in Mathematica?
Is there a way to find $\sqrt[n]{x}$ with Mathematica beside of x^(1/n) as this is something different, because this is not always the same (-1)^{\frac{2}{4}}=i ...