# Questions tagged [precedence]

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### Why Divide does not give the same answer? [closed]

I saw a question on Facebook $8\div2 (2 + 2)=?$ Consider these inputs. Divide[8, 2 (2 + 2)] 1 $8\div2 (2 + 2)$ using esc+div+esc 16 Why the results are ...
1k views

### Prefix operator with low precedence

The question is simple, but I will elaborate on the background as well for those interested in the idea: How to define a new operator with specified precedence value? Background Mathematica was ...
49 views

### Operator Precedence in Notation Package

I am trying to use the Notation package to define custom notation for chemical reactions. The natural thing to do is to use a \[LongRightArrow] for the operator....
248 views

### Which operators are missing from the official precedence table?

I often use the Operator Input Forms page as a reference for operator precedence as well as which (used or unused) operators exist. However, I just noticed that at least one operator is missing from ...
509 views

### Change Operator Precedence of --> operator

I am trying to use --> operator with highest precedence ...
248 views

### Table of precedence values for all System symbols

Has anyone created a table listing the precedences for all symbols? Also, it would be nice if there were a function that for a given precedence value or interval, returned all the symbols with that ...
101 views

### PrecedenceForm with Format

I'd like to format the output of certain operators with Infix-style formatting to have lower precedence than Times. Let's say I ...
4k views

### when is f@g not the same as f[g]?

I have always thought that f@g will give the same result as f[g] in all cases, and it is just a matter of style which one to use ...
590 views

### How exactly does Postfix notation work?

I guess I've been using the Postfix notation // wrongly for some time now. I assumed it was a quick way to apply a function to ...
821 views

### Is it important that the front-end has a built-in parser?

The Notebook interface has a parser that seems aware of all operator-precedences, allowing us to step through the expressions (rather: Box-) hierarchy with Ctrl+. This is extremely convenient, saving ...
202 views

### Bug in grouping after editing code?

Bug introduced in 7.0 or earlier and persisting through 11.0 While looking at A question about conditional replacement I think I discovered a bug in the Front End that affects both 7.0.1 and 10.0.1 ...
502 views

### 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 ...
347 views

### 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] ...
78 views

### 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 ...