Mathematica symbols are the ultimate atoms of symbolic data. Every symbol has a unique name, exists in a certain Mathematica context or namespace, and can have a variety of types of values and attributes.

learn more… | top users | synonyms (2)

0
votes
0answers
8 views

Mathematical formal expression of find “subfunction” in function [migrated]

Imagine if I have a function $s(t)$ and $r(t)$. $s(t)$ may contain $r(t)$ one or more times as $s(t)$ is a quasi-period function. What is the correct expression if I want to say the $s(t)$ contains ...
14
votes
3answers
476 views

Defining symbol shortcuts in the Front End

I was wondering (because I could not find any documentation on this) if it is possible to do shorthand abbreviations for domains or could one define them? E.g. In[1]:= Element[p,Complexes] ...
5
votes
1answer
296 views

Why Mathematica chooses bracket for function arguments over parenthesis?

This is a non-technical question. I'm just curious that why Mathematica breaks the convention that parenthesis are widely used for function arguments. What's the advantage for ...
1
vote
1answer
37 views

Finding parameters for which a function/symbol is defined

Suppose I have a symbol/function defined pointwise like in f[1, 5] = 3 f[3] = 7 f[2, 3.4] = 8 By executing ?f I can see the ...
20
votes
5answers
923 views

How do you programatically load data into symbols?

I am trying to convert a list of string names into symbols, which will then be used to store data. I have 24 files (where the name of each file is a member of the list mentioned above) that I need to ...
0
votes
0answers
45 views

in the part assignment is not a symbol, create different matrices with a “Do” loop [duplicate]

Im trying to assemble new matrices from some previous matrices I have created, but I can´t. What Im trying to do is the following: 1) I have different matrices: ...
5
votes
1answer
77 views

How to get all the symbols `x` for which `f[x]` is defined?

Assume that definitions like the following are in place: ...
0
votes
0answers
36 views

Symbol-handling, force-replace instanced variables within functions! [duplicate]

Currently I am stuck with the issue of renaming an instanced variable like r1$23314 to a global one. This issue arises as I need to use a "localizeAll" Module in ...
1
vote
1answer
40 views

Replace symbols in output without evaluation

I found the Wolfram example for ExpandNCM but I want a more human-readable output form. I want to evaluate ExpandNCM, for example with ...
15
votes
4answers
318 views

Result about Context is inconsistent with the description of “Power Programming with Mathematica”

x = 5; temp`x = 6; Begin["temp`"] {x, Global`x, temp`x} The result in my Mathematica session is {5,5,6}, but it's ...
4
votes
1answer
64 views

? (Definition) versus ?? (Information)

What is the difference between ? Definition and ?? ...
0
votes
2answers
47 views

in the part assignment is not a symbol, create different matrices with a loop

Im trying to assemble new matrices from some previous matrices I have created, but I can´t. What Im trying to do is the following: 1) I have different matrices: ...
3
votes
1answer
81 views
1
vote
3answers
158 views

How can I make a summary of all the commands of Mathematica?

I would like to have a simple way to get summary information about all the many commands built into Mathematica. How could I do this? Is there a site I may refer to?
9
votes
1answer
305 views

How can I replace the Greek symbols in an expression with their plain text names?

Suppose I have an expression with Greek symbols in it. How would I convert that expression to another expression where the Greek symbols have been replaces with their names in plain text? I've ...
2
votes
2answers
450 views

How to define a vector with automatically added symbolic elements with subscripts

I want to define a vector lets say k containing elements Symbolize[Subscript[k, 1]], k2, k3 ... etc. When I define lets say k4 . I want the symbol automatically added to vector k. Something like ...
1
vote
0answers
60 views

Can I get a symbol cross-reference of a Mathematica Notebook?

Is there a way to get a cross reference listing for a notebook or set of notebooks?
1
vote
1answer
66 views

SymbolicC Simplified Displayed

How might I display a simplified SymbolicC below. For example in the following example ...
5
votes
1answer
157 views

TeXForm and Symbolize

I would like to use TeXForm to generate latex output as usual. Howeve, I use subscripted variables such as c_t. Unfortunately, when using symbolize in the notations package for this end, TeXForm does ...
2
votes
1answer
161 views

Some Characters From Custom Font Do Not Show Up

I'm using version 8.0.4.0 on a Mac, and recently made my own .otf and .ttf fonts at PaintFont.com. The font can be based on pretty much anything, including handwriting, and covers everything from ...
28
votes
5answers
14k views

How do I clear all user defined symbols?

Is there some way to do this other than going to Evaluation -> Quit kernel and firing a new one up?
0
votes
0answers
72 views
4
votes
0answers
134 views

Organizing Wolfram language symbols with Entity

Here's a word cloud tally of the ~5k System names split at camel humps, with the long tail cropped. What resources are available to organize these terms using the new ...
0
votes
1answer
52 views

Symbolic Expectation Operator [closed]

Is there anyway to write the symbolic expectations operator $\mathbb{E}$ in mathematica? I tried ExpectationsE, but its not quite. Thanks!
13
votes
2answers
2k views

Which Mathematica function has the longest name (by character length?)

I came across DamerauLevenshteinDistance[u,v] in the documentation center so that got me thinking: Which documented Mathematica function has the longest name? ...
0
votes
0answers
57 views

Usage of @ symbol in Mathematica [duplicate]

What is the purpose of @ symbol? Also, I would appreciate if somebody could provide a webpage where such functional special symbols are documented
0
votes
1answer
23 views

Numeric-type attributes for symbols (analog of NumericFunction)

Is there an attribute for symbols that makes NumericQ give True? For example Pi and ...
13
votes
1answer
311 views

Is garbage collection broken in version 10.0.0?

Bug introduced in 10.0.0 and fixed in 10.0.1 In version 10.0.0 under Windows I am observing the following behavior: ...
2
votes
1answer
96 views

Equivalent command to the Maple indets command

This carries on the discussion here and here. I had mistaken Variable[] to give you ALL variables in an expression, but apparently, it is not meant for that. ...
0
votes
1answer
99 views

About Symbolize and Variables

I do believe this sort of similar questions had been asked many times, so I have read a LOT. For example this and this as well as many other related posts. But a glance at what my main question is ...
1
vote
1answer
106 views

Symbolize Subscript doesn't work

I want Mathematica to interpret subscripted variables as symbols. I found documentation suggesting the Notation package could do this, but if I do: ...
4
votes
1answer
111 views

Is undocumented \.bd = ½ bad to use?

I want to use \.bd which leads to ½ as part of the name of a symbol in the front end (e.g. ...
3
votes
0answers
63 views

How to get Symbol[“x”]=3 to work [duplicate]

This is probably a really simple one, but I'm stumped. I want Symbol["x"]=3 to work just like x=3. However I can't figure out ...
29
votes
2answers
2k views

How can I use the Klingon alphabet symbols?

Note: This functionality is presently missing. See: How to add named characters to Mathematica 10? Mathematica apparently supports the Klingon alphabet: ...
2
votes
0answers
47 views

Is there any way to get Times displayed as $\cdot, *,$ or $\times$ in output form? [duplicate]

In the output of Mathematica, operators $\cdot$ or * or $\times$ are usally displayed as space; e.g., $x * y$ becomes $x \, y$ in output. Is there any option that can be set to make "space" becomes ...
2
votes
0answers
90 views
7
votes
1answer
142 views

How to convert \[Formal…] symbols to standard ones in an expression?

Mathematica generates an expression sometimes using \[Formal] symbols. This is causing a problem with the TeXForm code generated ...
9
votes
2answers
512 views

Telling mathematica to output * instead of space for multiplication, so I can copy as plain text

I am trying to get some symbolic expressions in Mathematica which I would like to paste into my C/MATLAB codes. This can be accomplished nicely by selecting the expression and right-clicking to ...
2
votes
3answers
236 views

How to create a writable and clearable symbol? [duplicate]

I'm trying to create several symbols and assign values to them. Here's what currently appears to work: Evaluate[Symbol["fdds" <> ToString[10]]] = 1 But ...
3
votes
1answer
87 views

Symbolic Output after numerical computation

I have a small question about the symbolic output. I started to write a program that generates the coordinates of n-dimensional polytopes by Wythoff construction. For crystallographic groups, all is ...
2
votes
1answer
59 views

How to joint symbolic expressions together [duplicate]

I want to joint symbolic expressions together to create a another symbolic expressions. one way to do that is as follows: ...
2
votes
1answer
405 views

What's the difference between variables with and without a subscript?

If I input $x = a + b$, the $x$, $a$ and $b$ are blue. When I hit Shif+Enter, the $x$ turns black, indicating the kernel now knows this variable. But when I input $x_r = a + b$, and hit Shift+Enter, ...
0
votes
1answer
65 views

Optimizing repeated function calls

Easiest way to keep my library nice, is to naively call some functions many times with same parameters. Doing so prevents from zoo of (library-)global variables and complicated initialisation ...
1
vote
1answer
111 views

Unevaluated symbols [duplicate]

I often find it useful to define a symbol from strings (often in a loop in which I define other symbols). This I accomplish with Symbol (and often ...
0
votes
1answer
152 views

Append subscript to variable name [duplicate]

I'm importing equations from Word document and transforming them into input form. But subscripts look ugly. Is is possible to programmatically append subscript to variable name? e.g. ...
3
votes
2answers
249 views

Replace every Minus to Plus in Expression

Thought this is a rather simple thing, but I was not able to find a solution: I have a polynomial expression like: expr1=a^2-b+c*d expr2=a-b expr3=-a+b-c and ...
20
votes
5answers
1k views

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 ...
0
votes
1answer
59 views

Why won't Manipulate work with symbols generated by Symbol?

Suppose I am provided with two data lists. (Assume for the moment that they are lists of integers.) I would like a function that generates bar charts that I can manipulate. Here is what I have: ...
1
vote
0answers
95 views

Auto-complete for user defined functions [duplicate]

If I define a symbol in Mathematica, it doesn't show up in the autocomplete list that works for symbols in System. Test code: ...