About This Site
How this website is built.
In Short
This site uses no JavaScript and no cookies, and it loads nothing from other servers: every page, font and file comes from this server. There is no analysis and no tracking. What a visit transmits anyway is described in the Datenschutzerklärung.
How It Is Built
The pages are static HTML, generated with Jekyll from Markdown, a few data files and a BibTeX file of my publications, with layouts and a stylesheet written for this site. Formulas are turned into MathML while the site is built, so the browser shows them without any script. A check runs with every build and stops it if a page contains JavaScript, loads anything from another server, or links to a page or section that does not exist. The site is hosted at Uberspace.
Without JavaScript
What usually needs scripts is done here with HTML and CSS alone: sections fold and unfold without a script, and the arrow back to the top is a plain link. The light or dark colour scheme, reduced motion and the layout for narrow screens follow the settings of your browser; these settings stay in your browser and are not sent to the server.
Typography
The text is set in Libertinus Serif, with real small caps for titles and navigation, and formulas are set in Libertinus Math; both are published under the SIL Open Font License. The ornaments ☙ ⚘ ❧ are typographic fleurons, characters of the text rather than images.
History
Earlier versions of this website were built from the Jekyll theme al-folio. In October 2026 it was replaced by the present design, which is smaller and was made for this site.