User talk:Amir doostan

January 2014
Welcome to Wikipedia. We welcome and appreciate your contributions, including your edits to Euler's formula, but we cannot accept original research. Original research also encompasses combining published sources in a way to imply something that none of them explicitly say. Please be prepared to cite a reliable source for all of your contributions. Thank you. JohnBlackburne wordsdeeds 02:57, 11 January 2014 (UTC)

Please do not add or significantly change content without citing verifiable and reliable sources. Before making any potentially controversial edits, it is recommended that you discuss them first on the article's talk page. Please review the guidelines at Citing sources and take this opportunity to add references to the article.  Josh3580 talk/hist 08:46, 11 January 2014 (UTC)