User talk:Sunpengfeiyear

Hi Sunpengfeiyear, I deleted your recent addition to the article combinatorics because it didn't seem to fit well with the topic or the content that's already there. If you would like to discuss these edits (which is how the editing process on Wikipedia usually works), you can do so on the article's talk page. All the best, JBL (talk) 12:22, 4 June 2017 (UTC)