betanumeric

English

Adjective

betanumeric (not comparable)

1. Consisting only of digits and lower case consonants except 'l': 0123456789bcdfghjkmnpqrstvwxz.
   • 2020 November, Mat Kelly, Jane Greenberg, Christopher B. Rauch, Sam Grabus, Joan P. Boone, John A. Kunze, and Peter Melville Logan, “A Computational Approach to Historical Ontologies”, in Advanced Information AI-CCollaboratory‎^[1]:

     While any alphanumeric string can be used for the Assigned Name, the specification recommends using a “betanumeric” [12] character set which removes all vowels and the lowercase l (letter ell) to mitigate ambiguity and help limit transcription errors.

   • 2023 November 3, J. Kunze, E. Bermès, “The ARK Identifier Scheme”, in IETF‎^[2]:

     Restricting NAANs to betanumerics (alphanumerics without vowels or 'l') serves two goals.

   • 2024 April 25, Wikipedia contributors, “Check digit”, in English Wikipedia‎^[3], Wikimedia Foundation:

     An extended digit is constrained to betanumeric characters, which are alphanumerics minus vowels and the letter 'l' (ell).