Question

Sage.

Answer 1

thyme

Answer 2

I want to define a function which presents everything in interval notation.

Answer 3

here is an input, for example:
```
In[1]: 34
In[2]: 53
```
The output is very easy in this case:
```
[34,53]
```

Answer 4

But what if I have something like this?
```
In[1]: x > 4
ln[2]: x < infinity
```
Where I want
```
[4,infty)
```

Answer 5

Yup. @experimentX I know that you are rad at programming. Can you help?

Answer 6

what do you want to do?

Answer 7

rad? welcome to 1990s

Answer 8

@TuringTest You, please?

Answer 9

OK, on second thought, I want something like this:
```
Number 1: 4
Number 2: infinity
Inequality type: closed.
```
And the output is...
```
[4,infty)
```

Answer 10

Just an interval notation.

Answer 11

I don't think you could do that, because the set of real number is both closed and open set.

Answer 12

[4, infinity) could be both (neither closed nor open) and (closed set)

Answer 13

hmm...

Answer 14

try something like this around in mathematica
`f[a_, b_] := If[NumericQ[a] && NumericQ[b], Print["Closed"], Print["Open"] ] `
` f[1,2] `
BTW
how did you put those colorful text?

Answer 15

I don't have Mathematica; my computer got formatted :-(

Answer 16

on what language are you planning to write it?