User talk:2A02:2F0E:9:EC00:60F5:A93E:96AB:BD16

June 2021
Hello, I'm DVdm. I noticed that you made a change to an article, List of formulae involving π, but you didn't provide a source. I’ve removed it for now, but if you’d like to include a citation to a reliable source and re-add it, please do so! If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks. DVdm (talk) 11:30, 7 June 2021 (UTC)