# Tagged Questions

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### Going full functional (Haskell style)

I'm trying to define some notation so that Mathematica code would be more functional, similar to Haskell (just for fun): currying, lambdas, infix operator to function conversion, etc.. And I have some ...
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### Creating a R DataFrame like construct in Mathematica

I kept getting my data mixed up so I decided to see if I could construct a package adding a R DataFrame like construct to Mathematica. I managed to cobble something together that sort of works, but I'...
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### How can one define an infix operator with an arbitrary unicode character?

You can setup "UsefulFunction[a, b]" to use custom infix notation "a [LeftRightArrow] b" as follows: ...
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### Difficulties in creating strict and robust equivalence between two symbols using the Notation package

I am investigating the use of the Notation package facilities to create strict the equivalence between pretty-printed symbols such as ...
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### How to type binomial coefficient $\binom{n}{k}$

I know how to type a fraction as you would write a fraction in Mathematica (9). How do you type Binomial[n,k] as $\binom{n}{k}$ in Mathematica? Is there a single ...
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### How to construct custom operators with precedence?

I need to combine data structures in operations analogous to addition, subtraction, multiplication and division (and more). I need more than one operation of each type, i.e. more than one method of ...
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### Map Input A B C to MyProduct[A,B,C] (NOT to Times[A,B,C])

In writing my own (noncommutative) product I want to avoid typing redundant symbols like A.B.C or A**B**C, I just want to type <...
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### Is Package development (via InitializationCells) compatible with creating new Notations (via MakeExpressions)?

Can new (lower-level) notations be readily used within package code? There are a few notational additions that might improve my code base but I'm not sure if these will end up being more trouble than ...
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### How to imitate list comprehensions for constant arrays?

In Python, ['a'] * 10 generates ['a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a'] and ...
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When I'm using Symbolize function, there are some details that I'm not sure. For example: ...
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### Override @ to mock Java Classes

This question appears impossibly long so apologies in advance (skip to the bottom if you want to see the actual questions). I want to be able to mock Java Classes in Mathematica code. For example, I ...
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### Notation package: parenthesis placement for SuperscriptBox

The question concerns the Notation package. I want to define notation for the function very similar to the built-in Power[a,b] ...
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### How to implement Feynman function notation?

I would like trig functions to format with custom DisplayForms as follows: These were created by Richard Feynman in high school. Related: http://tex.stackexchange.com/questions/274463/feynman-...
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### Notation Package Quirk for single Symbols

I encounter the following quirk in the Notation package: consider the following ==> and <== declarations ...
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### Custom operators; custom pattern matching with pure functions

What I'm trying to achieve in Mathematica is the creation of a binary operator whose operands are both pure functions over the natural numbers. The result of the operator should be another pure ...
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### How to create assignments to OverVector programmatically

I wish to write a function that accepts two lists. The 1st argument is a list of lists, holding the components of a several vectors. Ex.: comp = {{a, b}, {c, d}}. ...
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### Indices and variable definitions in Mathematica

Does anyone know how I can do this in Mathematica? Just an example.. Defining indices and variables (defined over indices), "mapping" variables and indices: ...
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### Defining conditional Notation rules

I am trying to define a notation rule so that for selected symbols subsripts will be equivalent to function parameters. My understanding of the docs suggests the following ...
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### Notation not recursive enough?

My notation is not recursing enough. For example, Notation[W[a_ | b_] âŸ¹ foo[a_, b_]/foo[b_]] Notation[W[a__, b_ | c_] âŸ¹ W[a__ | c_]W[b_ | c_]] Then ...
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### 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 ...
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### Change Tensor Product symbol for aesthetically pleasing output

I'm trying to find a way of keeping an ordered list of subscripted integers which can be outputted in an aesthetically pleasing way to make analysis easier. The idea is to have a list of numbers that ...
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### How to use Notation package with TraditionalForm

I know that I can use the Notation package to define my own custom notation. This works great for StandardForm output, but I ...
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### Syntax colouring when using Symbolize

I need to use symbols with suffixes in order to make my code readable in relation to the Eurocodes. To do this I use Symbolize from the ...
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### How to enter arrows in Notation function?

It is not clear, what symbol is used in Notation function description for arrows? How to enter it in textual mode within Workbench? Here: http://reference.wolfram.com/mathematica/Notation/ref/...
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### Notation::gshadw warning when using Symbolize inside If

Somewhere in my init.m file I have the following code: ...
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### custom precedence for custom infix operator with InfixNotation [duplicate]

I am trying to define several custom operators with custom precedence to implement geometric algebra. Loading the notation package << Notation` I can ...
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Iam trying to download "ToMatLab" Package from http://library.wolfram.com/infocenter/MathSource/577/ but it is showing me an error message by showing a big question mark and "File could not be loaded"...
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### How to summarize the coefficient in Notation?

With the help from Stephen Luttrell in stackexchange, I can give an intuitive expression of quantum walk, as shown in the Mathematica codes below. ...
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### Correct way to use Notation

I have tried to create some Notation declarations as follows ...