Hello world

welcome to my page. I am interested, among other things, in

• Astronomy and Satellite watching,
• Chinese and Japanese^ℵ language and culture,
• Cryptography,
• Literate programming, mostly using Norman Ramsey's noweb tool. More recently, I experimented with Org Mode.
• The Lisp family of programming languages, in particular Common Lisp and Scheme,
• Mathematics (as you might have guessed ;-)
• Operating systems such as
  • Plan 9, which has a much more interesting page with the same title. Recently all versions of Plan 9 have been made available under the MIT license.
  • Traditional Unix
  • GNU/Linux, I am using Debian, Ubuntu and UBports. I no longer use Mac OS X.
• Precision time-keeping,
• Software defined radio, using Airspy and ADALM-PLUTO,
• Small, historically important computers and calculators.

I keep some bookmarks which are updated more regularly than this page. I had started to collect them on del.icio.us, but switched to a local instance of Shaarli. I also have a page on our experimental wiki which might grow faster than this page.

Some alternative search engines: Duck Duck Go, Ecosia, searX and startpage.com. Wikipedia and OpenStreetMap are often useful.

Is this '€' a (UTF-8 encoded) Euro sign? Here are test pages for greek and a few chinese and japanese characters.

Cahaya's corner, her blog, mail, Nextcloud and organice.

^ℵ If you are wondering why this link is shown in another style than those above, this one points to a local page whereas the others refer to pages elsewhere.
Last changed: 2025-05-21T07:37:11-CEST.

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