Privacy
Translation for orientation. The German version is the legally binding one.
This site sets no cookies, measures nothing, embeds no advertising and loads no content from third-party servers. There is no account, no form and no stored learning progress. That is why there is no consent banner: there is nothing to consent to.
Controller
Heinrich von Martens. Address and contact are in the legal notice.
Hosting
The site is hosted by Railway (Railway Corp., USA). When you open a page, Railway processes technically necessary data such as the IP address in server logs. The legal basis is Art. 6 (1) (f) GDPR, our legitimate interest in secure and stable operation. Data may be transferred to the USA; Railway relies on the EU Commission's standard contractual clauses. We have no access to these logs.
Fonts
The Inter typeface and the mathematics fonts are served from this server. No connection to Google Fonts or any other third-party service is made.
Links to other sites
The films open a third-party site. As soon as you open it, its privacy policy applies, not this one.
Your rights
Under the GDPR you have the right to access, rectification, erasure, restriction of processing, data portability and objection. You can also complain to a data protection supervisory authority. The one responsible for us is the State Commissioner for Data Protection and Freedom of Information of North Rhine-Westphalia.