abiteboul_vianu_theorem (219B)
1 # Abiteboul Vianu theorem 2 3 https://en.wikipedia.org/wiki/Abiteboul-Vianu_theorem 4 5 [PTIME] is equal to [PSPACE] if and only if [fixed_point_logic] is the same as [partial_fixed_point_logic] 6 7 Up: [descriptive_complexity]