This page is a redirect. The following categories are used to track and monitor this redirect:
To a related topic: This is a redirect to an article about a similar topic.
Redirects from related topics are different than redirects from related words, because a related topic is more likely to warrant a full and detailed description in the target article. If this redirect's subject is notable, then also tag it with {{R with possibilities}} and {{R printworthy}}.
If Positive semidefinite matrix is retargeted or is expanded into a separate article, template, or other project page, this redirect will be recategorized to be updated.
From an alternative hyphenation: This is a redirect from a title with an alternative hyphenation of the target name. Pages that link to this redirect may be updated to link directly to the target page if that results in an improvement of the text. Do not "fix" such links if they are not broken. Also, these links should not be replaced with piped links.
When appropriate, protection levels are automatically sensed, described and categorized.