closed timelike curve
31Bootstrap paradox — The bootstrap paradox is a paradox of time travel in which information or objects can exist without having been created. After information or an object is sent back in time, it is recovered in the present and becomes the very object/information… …
32Wormhole — In physics, a wormhole is a hypothetical topological feature of spacetime that is fundamentally a shortcut through space and time. Spacetime can be viewed as a 2D surface, and when folded over, a wormhole bridge can be formed. A wormhole has at… …
33Roman ring — A Roman ring, in theoretical physics, is a configuration of wormholes where for each individual wormhole the time difference across its mouths is such that it may not allow a closed timelike curve (CTC), or closed time loop . If these wormholes… …
34Exact solutions in general relativity — In general relativity, an exact solution is a Lorentzian manifold equipped with certain tensor fields which are taken to model states of ordinary matter, such as a fluid, or classical nongravitational fields such as the electromagnetic field.… …
35Cosmic censorship hypothesis — The weak and the strong cosmic censorship hypotheses are two mathematical conjectures about the structure of singularities arising in general relativity. Singularities that arise in the solutions of Einstein s equations are typically hidden… …
36Philosophy of physics — is the study of the fundamental, philosophical questions underlying modern physics, the study of matter and energy and how they interact. The main questions concern the nature of space and time, atoms and atomism. Also the predictions of… …
37CTC — Contents 1 Government bodies 2 Educational institutes 3 Theatre …
38List of mathematical topics in relativity — This is a list of mathematical topics in relativity, by Wikipedia page. Special relativity Foundational issues principle of relativity speed of light faster than light four vector four acceleration four force four momentum four velocity light… …
39Kaleidoscope Century — is a science fiction novel by John Barnes. First published in 1995, it is part of the author s Century Next Door series.Plot summaryThe narrator, at first appearing to be thirty five, wakes up May 27, 2109 in an apartment on human settled Mars.… …
40Black hole electron — In physics, there is a speculative notion that if there were a black hole with the same mass and charge as an electron, it would share many of the properties of the electron including the magnetic moment and Compton wavelength. Problems As a… …
