User talk:Liusiyue

December 2020
Hello. This is a message to let you know that one or more of your recent contributions, such as the edit you made to Wagner's theorem, did not appear constructive and has been reverted. Please take some time to familiarise yourself with our policies and guidelines. You can find information about these at our welcome page which also provides further information about contributing constructively to this encyclopedia. If you only meant to make test edits, please use your sandbox for that. If you think I made a mistake, or if you have any questions, you may leave a message on my talk page. Thank you. Serols (talk) 08:51, 13 December 2020 (UTC)

Hello, and welcome to Wikipedia! Thank you for your contributions; however, please remember the essential rule of respecting copyrights. Edits to Wikipedia, such as your edit to the page Wagner's theorem, may not contain material from copyrighted sources unless used with permission. It is almost never okay to copy extensive text out of a book or website and paste it into a Wikipedia article with little or no alteration, though you can clearly and briefly quote copyrighted text in the right circumstances. Content that does not comply with this legal rule must be removed. For more information on this, see:
 * Copying text from other sources
 * Policy on copyright
 * Frequently asked questions on Wikipedia's copyright policy
 * Policy and guideline on non-free content

If you still have questions, there is the teahouse, or you can and someone will be along to answer it shortly. As you get started, you may find the pages below to be helpful.


 * Introduction
 * Contributing to Wikipedia
 * The five pillars of Wikipedia
 * How to edit a page
 * How to create your first article
 * Simplified Manual of Style

I hope you enjoy editing Wikipedia! Please sign your name on talk pages using four tildes ( ~ ); this will automatically produce your name and the date. Feel free to write a note on the bottom of my talk page if you want to get in touch with me. Again, welcome! — Diannaa (talk) 15:15, 14 December 2020 (UTC)

Your edit to Wagner's theorem has been removed in whole or in part, as it appears to have added copyrighted material to Wikipedia without evidence of permission from the copyright holder. If you are the copyright holder, please read Donating copyrighted materials for more information on uploading your material to Wikipedia. For legal reasons, Wikipedia cannot accept copyrighted material, including text or images from print publications or from other websites, without an appropriate and verifiable license. All such contributions will be deleted. You may use external websites or publications as a source of information, but not as a source of content, such as sentences or images&mdash;you must write using your own words. Wikipedia takes copyright very seriously, and persistent violators of our copyright policy will be blocked from editing. See Copying text from other sources for more information. —David Eppstein (talk) 07:46, 15 December 2020 (UTC)

Blocked
 You have been blocked indefinitely from editing for violating copyright policy by copying text or images into Wikipedia from another source without evidence of permission. Please take this opportunity to ensure that you understand our copyright policy and our policies regarding how to use non-free content. If you think there are good reasons for being unblocked, please read the guide to appealing blocks, then add the following text below the block notice on your talk page:. — Diannaa (talk) 11:46, 15 December 2020 (UTC)

I have blocked your account, because in spite of repeated warnings, you continued to add copyright material to Wikipedia in violation of our copyright policy. You cannot resume editing until you provide a statement describing how copyright applies to Wikipedia, show that you understand our copyright policy, and make a commitment to follow it in the future.— Diannaa (talk) 11:47, 15 December 2020 (UTC)