New 24Apr2020. Updated 16Aug2026

• Wikipedia
  • English: Aclassifier
  • Norwegian: Aclassifier
  • German: Aclassifier
• Wikimedia Commons
  • Aclassifier
• Wikipedia:Teahouse
  • Missing article on the xC programming language (Mar2021)
  • My collected autographs, are they valid signatures? (May2022, updated Aug2026) I have the autographs of the late Kristen Nygaard, Ole-Johan Dahl and C. A. R. (Tony) Hoare, plus the still living Alan Kay and Bjarne Stroustrup. I collected these by approaching the persons at Simula-67’s 25 years anniversary at the University of Oslo (in 1992). In addition, I have a label from a letter to me, signed Per Brinch Hansen. He is also deceased. This most probably is his signature. (Update 23Jan2024: I now also have An Wang‘s signature, see 248:[8])