Hello, GoatGuy! Welcome to Wikipedia! Thank you for your contributions to this free encyclopedia. If you decide that you need help, check out Getting Help below, ask me on my talk page, or place {{helpme}} on your talk page and ask your question there. Please remember to sign your name on talk pages by clicking or using four tildes (~~~~); this will automatically produce your username and the date. Finally, please do your best to always fill in the edit summary field. Below are some useful links to facilitate your involvement. Happy editing! Stardust8212 15:59, 26 April 2008 (UTC)[reply]
When you were reformatting the lambda calculus article, you changed a number of ↦ symbols to = symbols, changing the meaning of the expressions. Please try to be more careful in the future. —Mark Dominus (talk) 19:48, 9 September 2011 (UTC)[reply]