Existence of CTCs implies also equivalence of quantum and classical computation (both in PSPACE).
light curve | Case Closed | Bézier curve | The Bell Curve | Closed-circuit television | Lorenz curve | Frontier Closed Area | elliptic curve | Curve | Closed-form expression | closed captioning | Timelike Infinity | Engel curve | Curve fitting | Curve (band) | Comparison of open source and closed source | closed form | bell curve | Water retention curve | Trouble with the Curve | timelike infinity | The New Adventures of Curve | The J Curve: A New Way to Understand Why Nations Rise and Fall | The Horseshoe Curve | Singular point of a curve | Roulette (curve) | Pseudoholomorphic curve | Phase response curve | Pedal curve | '''open''', '''semi-open''', and '''semi-closed''' |