Mathematical technique in proof theory that associates large countable ordinals to mathematical theories as a measure of their proof-theoretic strengths
tekniko de pruvoteorio, kiu asignas grandan kalkuleblan ordonombron al matematika teorio mezurante ĝian pruvoteorian potencon (eo)
mathematical technique in proof theory that associates large countable ordinals to mathematical theories as a measure of their proof-theoretic strengths (en)