User talk:18.189.44.143

Recent edit to Nonnegative rank (linear algebra)
Hello, and thank you for your recent contribution. I appreciate the effort you made for our project, but unfortunately I had to undo your edit because I believe the article was better before you made that change. Feel free to contact me directly if you have any questions. Thank you! Figfires Send me a message! 21:53, 8 October 2017 (UTC)