# Questions tagged [order]

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### How do I reassign canonical ordering of symbols?

I have a big polynomial that evaluates to: $$A^2 e^2 \phi ^- \phi ^++A e \phi ^- \phi ^+ c_{2 w} g_Z+\frac{1}{2} A e g h W^- \phi ^+ +\ll13\gg,$$ which is supposed to represent some terms in the ...
3k views

### How to keep Collect[] result in order?

For example, Collect[(1 + x + Cos[s] x^2)^3, x] gives the result ...
239 views

### Ordering Problem With VoronoiMesh

Imagine I want to model 2D cells moving in a tissue. Consider, as an example, Lloyd's relaxation algorithm. Using VoronoiMesh I'm able to mimic some cell movement. ...
921 views

### ListPlot join points by nearest neighbor rather than order

I have found some software that allows me to "data mine" the values from publication figures. I have a bunch of contours from papers that I've mined using this software, and am having some trouble ...
1k views

### How do I get a two-term polynomial with a leading negative sign to display in the correct (i.e. textbook) order?

The first three expressions evaluate as expected and the polynomial is displayed in what I would call "textbook" form. The last expression, however, switches the order of terms. Mathematica employs ...
430 views

### SortBy first element then second element, and so on?

SortBy can sort list by first element easily like so: SortBy[{{1, 6}, {1, 2, 8}, {2}}, First] and the result is: {{1, 6}, {...
508 views

### Best way to insert element into an ordered list at the correct position?

Suppose I have an ordered list orderedList and I want to write some code that will involve regularly inserting new elements into ...
255 views

### How does Query decide the order in which the functions are applied?

First of all I know that Query is a nice way to organize your functions that are applying at specific levels of an expression. But I don't understand the order in ...
186 views

### Cross product without reordering (noncommutative)

Not related to question I assume this question (as it is of very general structure) might have been asked before, unfortunately I did not find an answer to it - despite what I used as search queries. ...
997 views

### How can I reorder the factors in the terms of a polynomial?

How can I reorder the factors in the terms of a polynomial? Consider ...
75 views

### Ascending and descending in the context of the order of operations on Datasets

I did not understand the concepts ascending and descending in the context of the order of operations on Datasets. It is listed in the documentation, on Dataset's page and yet I did not understand. ...
147 views

### Cyclically Flat Functions

Any idea how to define some operator ° such that e.g. $((a°b)°c)°d=a°(b°(c°d))=a°b°c°d=b°c°d°a$ (but $a°b\neq{b°a}$ in general)? So ° is Flat plus (insert here)?
446 views

### Change Contour Plot Overlap Ordering

I have a contour plot for which I have selected a finite set of contours. However, the contours overlap in some places and I would like to reverse the order in which they are drawn. In other words,...
72 views

### Concise way to do lexicographic ordering

I want to order a bunch of number sequences lexicographically. Did this with ...
111 views

### How do I reassign the ordering of symbols in a polynomial expression?

I have a big polynomial expression, like this: ...
903 views

### Permuting elements within a list

I have s = {2, 3, 5, 7, 1, 4, 6} (* always with diffente elements in {1,2....7}*) l = Length[s] n = 3 and n tells us that we ...
272 views

### ordered tree data structure

I have a map $f:X\to \mathbb{N}$ and I wish to find $x,x'\in X$ such that $f(x)=f(x')$. Since such elements are rare, I will have to check very many elements and perform many comparisons, so I suspect ...
131 views

### Symbol Order for Built-in Functions such as TrigReduce

I’d like to use the TrigReduce function on a sum of n sinusoids to any power, and am running into an issue with Mathematica’s default ordering of symbols. Is there a way that I can specify an order ...
66 views

### How to simplify a polynomial and get the results in the order that I want? [duplicate]

How to simplify a polynomial in a order that I want? Assume that I have a polynomial here, for example, $a^3 b^4 c^2$, the order of symbels is the dictionary order, $a>b>c$. But what if I want ...
47 views

### How to reorder {x,y} list data and plot as ListLinePlot

How to re-arrange data to find line plot in order (I tried with given below code). ...