User talk:104.50.140.138

August 2022
Hello, I'm Squeakachu. I noticed that you added or changed content in an article, Proof School, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so. You can have a look at referencing for beginners. If you think I made a mistake, you can leave me a message on my talk page. Thank you. Squeakachu (talk) 21:11, 12 August 2022 (UTC)


 * The student was myself. I will end things there. 104.50.140.138 (talk) 21:22, 12 August 2022 (UTC)

September 2022
Please do not add or change content, as you did at David Nadler (mathematician), without citing a reliable source. Please review the guidelines at Citing sources and take this opportunity to add references to the article. Thank you. Deltaspace42 (talk) 19:16, 11 September 2022 (UTC)