Wolfram Mathematica

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user6014

04:34

@CATrevillian Did you do a clean start? support.wolfram.com/kb/12464

CA Trevillian

05:00

@user6014 I was sent that, but for Mathematica, this happened with Wolfram Desktop—I did not want to delete the stuff for Wolfram Mathematica and mess that up too, so I ended up fixing it by uninstalling the reinstall, and deleting the Wolfram Desktop folders that remained.

4 hours later…

Mats Granvik

08:35

(*A proxy for the prime numbers satisfy this linear program*)
(*start*)
nn = 42;
TableForm[
L1 = Table[
LinearProgramming[
Table[1/n, {n, 1, k}], {Table[If[n == 1, k, 1], {n, 1, k}]}, {{1,
0}}, Table[
If[n == 1, {-1, 1}, {-2 (n - 1), 2 (n - 1)}], {n, 1, k}]], {k,
1, nn}]];
b=Table[Sum[-Sign[-1 + Sign[L1[[n, k]]]], {k, 1, n}], {n, 1, nn}]
(*end*)

(*Setting one of the bounds to zero gives a square root bound*)
(*start*)
nn = 42;
TableForm[
L2 = Table[
LinearProgramming[
Table[1/n, {n, 1, k}], {Table[If[n == 1, k, 1], {n, 1, k}]}, {{1,

But when setting the bound to zero, it is no longer the prime numbers.

3 hours later…

Carl Lange

12:03

Spotted some Manipulates in the wild in this entertaining video about hyperboloids youtube.com/watch?v=MBsQOTvWL3Q

Mats Granvik

If you could see a reason to set the variable bound to zero or probably more correct to n^(epsilon) you would have an argument for the Riemann hypothesis. I can think of additional constraints to impose but I have not programmed them and I don't know if they are equivalent to the zero bound on variables.

5 hours later…

halirutan

16:37

Stupid question: What is the file extension for a Jupyter notebook that contains WL code?

The iwolfram kernel has an example with .ipynb as file extension but is that right? How does it tell that it is WL code and not Python then? The raw ipynb cells don't contain this information.

Szabolcs

17:14

@halirutan I think it's always .ipynb regardless of language. I always assumed that the notebook just contains a reference to the kernelspec

halirutan

@Szabolcs You are right. The single cells don't contain the language/kernel, but there is a meta-data section at the end.

halirutan

17:37

@Szabolcs Btw, I looked around and the Jupyter support inside PyCharm is really cool. It contains basically everything one would need to support the same for WL.

Downside is that there is a free version, but in IntelliJ 2019 they improved (rewrote?) the thing completely and it's now part of the professional edition. So there is no public code for it.

1 hour later…

Carl Lange

18:52

Feeling a little stupid not being able to come up with something sensible for this question: mathematica.stackexchange.com/questions/199928/…

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