Symmetry for transfinite computability
Lorenzo Galeotti, Ethan S. Lewis, Benedikt Loewe

Abstract:
Finite Turing computation has a fundamental symmetry between inputs, outputs, programs, time, and storage space.
Standard models of transfinite computational break this symmetry; we consider ways to recover it and study the resulting model of computation.
This model exhibits the same symmetry
as finite Turing computation in universes constructible from a set of ordinals, but that statement is independent of 
von Neumann-G\"odel-Bernays class theory.