Privacy policy

The «Mathematical Formulas» site is operated by the project team. For privacy requests, use the Contact page.

No account is required to browse the catalog. We may store local preferences (language and theme) in your browser via cookies or local storage. If you email us, we process the message content and your address to reply. If you submit a review, we store the name you give (optional), the rating, and the comment so we can moderate them and, if approved, show them on the site.

We record page visits in aggregate (path, subject or section when relevant) to improve content. That telemetry is not used to identify people, and the client analytics payload does not send your IP address.

Data is used to provide the service, remember language/theme, answer contact messages, publish approved reviews, and understand which parts of the catalog are used most.

Preferences live on your device until you clear them. Contact messages are kept as long as needed to handle them. Hosting and content storage may involve infrastructure providers under their own terms.

You may request access, correction, or deletion of personal data you sent us (for example a contact email). You can also clear cookies and local storage in your browser.