pith. machine review for the scientific record. sign in
def definition def or abbrev

arrowOfTime

show as:
view Lean formalization →

No prose has been written for this declaration yet. The Lean source and graph data below render without it.

generate prose now

formal statement (Lean)

 159def arrowOfTime : String :=

proof body

Definition body.

 160  "J-cost minimization selects a direction"
 161
 162/-! ## Black Hole Unitarity -/
 163
 164/-- The black hole information paradox tests unitarity:
 165
 166    Does information escape from black holes?
 167
 168    RS answer: YES, via ledger conservation.
 169    The ledger extends across the horizon.
 170    Information is never truly lost. -/

depends on (10)

Lean names referenced from this declaration's body.