Linked Questions
25 questions linked to/from Clear complains that a subscripted variable is not a symbol or a string?
4
votes
2
answers
7k
views
How do I clear all variables with subscripts? [duplicate]
Possible Duplicate:
Clear complains that a variable is not a symbol or a string?
Clear["Global*"]` Works for most variables, however if i do something like
$ \...
- 151
1
vote
0
answers
4k
views
How to assign (and retrieve) variables with subscripts? [duplicate]
I like to give subscripts to my variable names when the variables are related. I.e.,
Subscript[r, i] = 3
3
A problem arises when I later assign ...
- 247
2
votes
3
answers
417
views
0
votes
1
answer
969
views
Can't clear variables with subscripts [duplicate]
ClearAll["Global`*"]
doesn't clear subscripted variables. It won't clear these variables for example.
...
- 1
0
votes
1
answer
358
views
1
vote
0
answers
290
views
How to clear all subscripted variables? [duplicate]
I have the following variable:
Subscript[n, 0 ] = 12 (\[Sigma] L^2)/(e h^2)
If I now do:
ClearAll["Global`*"]
And then ...
- 3,093
1
vote
0
answers
59
views
Mathematica says that a variable is not defined, yet it gives me a value [duplicate]
this is probably a dumb question (Mathematica noob here) but I can't figure out what's going on. I have a variable that I assign a value to and use, then later in the notebook I assign it a different ...
- 31
221
votes
2
answers
14k
views
What is the distinction between DownValues, UpValues, SubValues, and OwnValues?
When reading through the documentation, you often encounter the phrases DownValues, UpValues, ...
- 34.1k
100
votes
5
answers
10k
views
Using the Mathematica front-end efficiently for editing notebooks
Background:
I have used Vim for 15+ years. There is a certain "one"-ness with the editor one achieves. Emacs users also experience this. Notepad users do not.
My current interaction with the ...
user1602
55
votes
2
answers
31k
views
Can we use letter with a subscript as a variable in Mathematica?
I tried
Subscript[a, 0] = 1
(* 1 *)
Clear[Subscript[a, 0]]
...
- 1,029
24
votes
2
answers
8k
views
Error entering equation in DSolve
I entered a command incorrectly as follows:
DSolve[{y'[x]=y[x]},y[x],x]
I am now experiencing:
...
- 15k
7
votes
3
answers
4k
views
How to Clear variables with apostrophe?
An apostrophe ' is often used when we want to distinguish two variables. For example, if we already have a variable t and we may ...
- 17.4k
6
votes
6
answers
8k
views
bar and hat only apply to certain letters
(I'm navigated from stackoverflow.com where I asked almost the same question)
I'm a beginner in Mathematica. Like shown in the image below, I'm trying to put hat ...
- 583
16
votes
1
answer
629
views
Selectively clear DownValues
How can I clear a subset of a symbol's DownValues ?
For example, suppose I have created some DownValues for $f$ like this:
...
- 85.4k
3
votes
4
answers
247
views
Pack Solve results into a vector
I am currently using a really easy function to get the eigenvectors of a corresponding eigenspace:
...
3
votes
2
answers
2k
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 ...
- 4,577
4
votes
2
answers
2k
views
Using Greek letters with subscripts as symbols
I'd like to use Subscript[ϕ, 1] as a function name:
Subscript[ϕ, 1][x_] = C1 + C2*x + C3*Exp[α*x] + C4*Exp[-α*x]
But as I use
...
- 41
4
votes
1
answer
669
views
How to "clear" the downvalues of a subscripted variable?
I have a function that sets certain subscripts of the symbol aa as in the following example:
...
- 445
6
votes
1
answer
2k
views
Best way to write an equation with subscripts and superscripts
This post is not about a specific Mathematica problem but about to develop the best way to enter mathematical equations with subscripts and superscripts. I have a ...
- 6,409
3
votes
2
answers
458
views
How to clear variables in a manipulate without enabling dynamic content?
I have a series of variables that will plot the number of straight segments along a curve, thanks to the help from here on one of my previous questions.
I can create a working Manipulate command from ...
- 1,106
3
votes
3
answers
145
views
Can I put subscripted parameter values into a package?
When defining packages, can I put parameter values alone or along with functions into a package in subscripted form?
...
- 2,345
0
votes
0
answers
175
views
>100 GB of memory used by Reduce. Am I doing something wrong?
Newish to Mathematica here. I'm running some code to compute regions of the parameter space where the covariance between innovations is positive or negative. On my Windows PC, it's been running for ...
0
votes
1
answer
79
views
Using Subscripted Notation without Introducing new identifier
I would like to use subscripted notation such as $\sigma_x$ as identifiers for use as variables. In this example I am using the Pauli Matrices so that I would use notation such as:
$$
\sigma_x = \{\{...
- 619
2
votes
0
answers
94
views
Using ForAll in Maximize to define a bunch of conditions [closed]
I'm trying to do something very straight forward. The following maximization works:
...
- 21
0
votes
0
answers
76
views
Using sub-scripted variables in functions
Is it possible to use subscripts in Mathematica functions, for example
f[Subscript[x, a] _] := x^2
However this doesn't seem to work, is there a way to allow ...
- 2,530