Tag Archives: general relativity

More Quasimetrics

A list of quasimetrics from real life: one-way street temperature preferences ratchet running distance around the track magnitude downside risk in a financial portfolio Facebook EdgeRank progress time I love you, but you like me back. Ouch. (“He loves me … Continue reading

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Manifolds, Star Fox, and Self-versus-Other

Branes, D-branes, M-theory, K-theory … news articles about theoretical physics often mention “manifolds”. ┬áManifolds are also good tools for theoretical psychology and economics. Thinking about manifolds is guaranteed to make you sexy and interesting. Fortunately, these fancy surfaces are already … Continue reading

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In the loop quantum gravity approach, space-time is quantized by a procedure that encodes it in a discretized structure, consisting of spin networks and spin foams. A spin network consists of an oriented embedded graph in a 3-dimensional manifold with … Continue reading

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More Quasimetrics

A list of quasimetrics from real life: one-way street temperature preferences ratchet running distance around the track magnitude downside risk in a financial portfolio Facebook EdgeRank progress DNA sequences time arXiv papers on quasimetrics (to read): The Geodesic Problem in … Continue reading

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Spacetime is Curved

“General relativity can be summed up in two statements: Spacetime is a curved pseudo-Riemannian manifold with a metric of signature . The relationship between matter and the curvature of spacetime is contained in the equation.” —Sean Carroll There you have … Continue reading

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