User talk:TentativeTypist

Welcome!

Hello, TentativeTypist, and welcome to Wikipedia! Thank you for your contributions, especially your edits to 2016 United Kingdom European Union membership referendum. I hope you like the place and decide to stay. Here are a few links to pages you might find helpful:

You may also want to complete the Wikipedia Adventure, an interactive tour that will help you learn the basics of editing Wikipedia. You can visit the Teahouse to ask questions or seek help.

Please remember to sign your messages on talk pages by typing four tildes (~~~~); this will automatically insert your username and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or ask for help on your talk page, and a volunteer should respond shortly. Again, welcome! John Maynard Friedman (talk) 16:41, 23 December 2019 (UTC)[reply]

Mathematics and other things

I'm afraid I've never used the random article feature, but perhaps someone at the Teahouse (see above) can help? Also, look out for wp:wikithons (editing marathons).

For mathematics, a good starting point is probably Wikipedia:WikiProject Mathematics.

Finally, when you want to start a new topic on a talk page (including another editor's), it is best to use the "New section" tab on the top row so that it goes at the end. And don't forget to sign whenever you edit a talk page and never when you edit an article. Have fun! --John Maynard Friedman (talk) 19:19, 23 December 2019 (UTC)[reply]

Update: It appears that this was what I was looking for: https://en.wikipedia.org/wiki/Wikipedia:GettingStarted#Try_it_out

@TentativeTypist: Good news, have fun. (I don't know if that remark was intended for me? If so, it is best to either leave a message on my talk page or (easier and keeps discussions together) use template:reply to (abbreviated to 'rto', as I have done at the beginning of this reply. Redundantly, of course, since it is your own talk page, but I wanted to demonstrate it). --John Maynard Friedman (talk) 11:31, 28 February 2020 (UTC)[reply]

Minor hint

Hi, I just found that you accidentally improved a notation for the worse: https://en.wikipedia.org/w/index.php?title=Power_rule&diff=prev&oldid=1026507222

This is no big deal. You do a lot of great improvements all over the place. Still, as you are that active, I wanted to point out that the convention is $f:X\to Y,X\ni x\mapsto f(x)\in Y$ . — Preceding unsigned comment added by Matheburg (talk • contribs) 19:55, 21 June 2022 (UTC)[reply]

Hi Matheburg. Thanks for your message. If I understand correctly, your criticism of my edit is that in general, the natural domain of the function

f

given by

f(x)=x^{r}

is not

\mathbb {R}

, e.g. in the case

r=1/2

. Is that right? TentativeTypist (talk) 21:26, 21 June 2022 (UTC)[reply]

Hi TentativeTypist, Thanks for the fast response. No, I don't see an issue there. It is just that you changed TeX's "\rightarrow" to the "\mapsto" arrow. To define from which domain to which codomain a function maps, one uses the "\to" (aka "\rightarrow"), not the "\mapsto" arrow. Not sure this was just an accident, or a notation misconception on your side. That is why I contact you :) Matheburg (talk) 08:47, 22 June 2022 (UTC)[reply]

Ah, I see. Thanks for clarifying. Yes, at the time, I did not know the right command. I have also fixed the issue regarding domains. TentativeTypist (talk) 21:26, 22 June 2022 (UTC)[reply]

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