Mathematics is the queen of the sciences.C. F. Gauss
ON / STORAGE
Cookie and storage policy
ONON.PRO uses browser storage and, after consent, analytics cookies. This page lists their purposes and how to change your choice.
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Necessary browser storage
onon-privacy-consent-v1 stores your analytics choice for up to 180 days. ononono-theme stores the theme you selected. Short-lived session storage supports interface state and security. These items are not used for advertising.
02
Analytics storage
After consent, Google Analytics may set _ga and _ga_<container> identifiers, commonly for up to two years, subject to the GA4 property settings. A random ONON.PRO session identifier is kept only in the current browser tab and sent for internal search analytics; the server stores only its keyed one-way hash.
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How to control storage
Use “Privacy settings” in the footer to accept or reject analytics at any time. Rejecting analytics does not disable calculators or search. You can also delete site data in your browser; the site will then ask for your choice again.
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Google Analytics
Google Analytics page usage and ONON.PRO internal search-demand events. No advertising cookies are enabled.
