A canonical url is the url of the best representative page from a group of duplicate pages, according to google. The issue of "duplicate, google chose different canonical than user" indicates that google has identified multiple pages with similar content and has selected a different page as the canonical version. 代数学中经常使用canonical isomorphim来等同代数对象。 bourbaki 的《algebra》中频繁直接使用canonical iso.
Look at the canonical you chose under page indexing > user-declared canonical. In your browser, look at the current page, the user-declared canonical, and the google-selected canonical. Jan 17, 2023alternate page with proper canonical tag this page is marked as an alternate of another page (that is, an amp page with a desktop canonical, or a mobile version of a desktop canonical, or.
