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# Questions tagged [built-in-symbols]

Questions related to handling built-in symbols and functions, for example why they behave a certain (possibly unexpected) way.

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### Error Message for GrammarRules and GrammarApply

I have been struggling with the following issue regarding an irregularity when deploying and applying GrammarRules. Specifically, it often takes several failed attempts before the execution is ...
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### InverseFunction cannot evaluate negative arguments

I have difficulty figuring out where my code fails. I want to obtain $\textbf{ry}$ which is the inverse function of rho (see below). When I input positive values for its argument, there's no problem. ...
60 views

### Domain specifications for InverseFunction

I have difficulty implementing on how to specify the domain that I want for ry which is the inverse function of rho. The necessary condition is that, $\textbf{ry}$ must remain $\textbf{positive}$ for ...
38 views

### How to get the bit size (bit length) of an integer? [closed]

Suppose I have the integer 255, so 11111111 is its base 2 (bit) representation and the bit size of 255 is 8. How can I calculate the bit size of a (big) integer in Mathematica? Is there a built in ...
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### Operators without built-in meaning are incompatible with parallel evaluation

Mathematica has a useful set of Operators Without Built-In Meanings. For example: CenterDot, CircleDot, ...
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### How does Wolfram Language implement for enabling symbols to receive various forms of parameters? [duplicate]

How does the official implement a list/tuple of parameters that can be different in type and quantity as a whole? After re-read @Szabolcs's and @MichaelE2's comments. Finally, I accepted the ...
101 views

### Why do atomic objects like 56 have a head if they're supposed to be, well, atomic?

This question follows from this one I made earlier. If you ask for FullForm[4] you will get back 4, and that's fine. ...
111 views

### What's the difference between 56 and Integer[56]? [duplicate]

I'm trying to grasp how to Wolfram Language uses symbolic expressions for everything. The concept of doing so makes sense to me, but the language doesn't behave how I predict. I understand how ...
102 views

### Automated (lazy) method to make custom (key-input) shortcuts (not menu items) for letter-like symbols? [duplicate]

The Problem: I don't know about you, but every time I am trying to do analytical work in Mma, it is rather difficult/cumbersome for me to type the following, here specifically for ...
48 views

### Symbolic Resultant Too Slow/Keeps Running

Evalutation of the following cell, which includes the symbolic resultant, of two univariate polynomials in $x$, with parameters $a,b,c$ for the first polynomial (of degree 4) and parameters $d,e,f,g$ ...
51 views

### JoinAcross with multiple associations

I would like to use JoinAcross to combine several lists of associations. Extending an example from the documentation, I'd like to do this: ...
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### Built-in function to know if a list is inside another? [duplicate]

For example, if the function is f[a_List,b_List] then in f[{a,b,c},{a,b}] and ...
131 views

### Is there an error pertaining to HypergeometricU function on functions.wolfram.com?

If one clicks on the last of the nine formulas on the Wolfram Functions site, one obtains ...
58 views

### any possible meaning to a “terminal” slash (/)? [closed]

I've been directed to the web page http://functions.wolfram.com/07.31.16.0001.01 The first statement in the formula is ...
128 views

### Crossing a symbol like p, similar to HBAR

Is it possible in Mathematica to cross a symbol like p, similar to h-bar, used to denote the Planck constant? Picture in case of font problems: In case of h, we have HBAR, inputted as ESC-hb-ESC ...
39 views

### Question related to IntegerPart

I am having trouble understanding the following result: Through[{IntegerPart,FractionalPart}[{100 4.02}]] {{401}, {1.}} ...
648 views

### How to take top 10 built-in function

WolframLanguageSymbol has a property named Frequencies, such as ...