User talk:81.201.48.29

October 2012
Please do not add inappropriate external links to Wikipedia, as you did to Boolean algebra. Wikipedia is not a collection of links, nor should it be used for advertising or promotion. Inappropriate links include (but are not limited to) links to personal web sites, links to web sites with which you are affiliated, and links that attract visitors to a web site or promote a product. See the external links guideline and spam guideline for further explanations. Because Wikipedia uses the nofollow attribute value, its external links are disregarded by most search engines. If you feel the link should be added to the article, please discuss it on the article's talk page rather than re-adding it. Thank you. QU TalkQu 20:41, 8 October 2012 (UTC)
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January 2021
Hello, I'm Scorpions13256. I wanted to let you know that one or more of your recent contributions&#32;to Die 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 Teahouse. Thanks. Scorpions13256 (talk) 11:50, 26 January 2021 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.

March 2023
Hello, I'm Aviram7. I wanted to let you know that I reverted one of your recent contributions—specifically this edit to Otto Wichterle—because it 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 Teahouse or the Help desk. Thanks. → αѵίɾαʍ7  ([ʆεt'ς tαʆƘ🇮🇳])← 11:26, 9 March 2023 (UTC)