User talk:86.137.70.11

Welcome to Wikipedia. We invite everyone to contribute constructively to our encyclopedia. Take a look at the welcome page if you would like to learn more about contributing. However, unconstructive edits are considered vandalism, and if you continue in this manner you may be blocked from editing without further warning. Please stop, and consider improving rather than damaging the hard work of others. Thank you. abakharev 22:28, 13 June 2006 (UTC)

Hello, I'm David Eppstein. I wanted to let you know that one or more of your recent contributions to Matching (graph theory) have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Help Desk. Thanks. —David Eppstein (talk) 17:53, 25 February 2018 (UTC)