`eulerian_number(0,0)` and `eulerian_polynomial(0)` should return `1` not `0`

[maxale]

Steps To Reproduce

sage: from sage.combinat.combinat import eulerian_number,eulerian_polynomial
sage: eulerian_number(0,0)
0
sage: eulerian_polynomial(0)
0

Expected Behavior

Both should be 1. E.g., see https://en.wikipedia.org/wiki/Eulerian_number

Actual Behavior

Returned 0 is incorrect.

Additional Information

No response

Environment

• OS: Ubuntu 24.04.2 LTS
• Sage Version: 10.6.beta7

Checklist

• I have searched the existing issues for a bug report that matches the one I want to file, without success.
• I have read the documentation and troubleshoot guide

[ayanchavand]

can I take this issue?

[vidipsingh]

Hi @maxale,
I have submitted a pull request to adjust eulerian_number(0, 0) and eulerian_polynomial(0) to return 1 instead of 0. Could you kindly review the pull request and let me know if any changes are needed or if this approach is suitable?
As I am new to this repository, I would greatly appreciate any guidance or feedback you could offer.

[ayanchavand]

Hey @vidipsingh
It's very unprofessional to push a PR on a issue that I asked for first

[maxale]

@ayanchavand: You don't need to ask anybody to work on the issue. Please just contribute a fix if have one. There is a plenty of open issues available to work on. Nothing here is to fight for.

[ayanchavand]

Weird, isn't like that on other orgs I've contributed to. Got it

[vidipsingh]

Hey @vidipsingh It's very unprofessional to push a PR on a issue that I asked for first

Hey @ayanchavand,
Apologies, I didn't see your message as I was already working on the issue. Sorry for the inconvenience.

[maxale]

Could someone please review the proposed fix?