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Tag Archives: spacetime
Manifolds, Star Fox, and Self-versus-Other
Branes, D-branes, M-theory, K-theory … news articles about theoretical physics often mention “manifolds”. Manifolds 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
Posted in Uncategorized
Tagged Albert Einstein, distance, economics, Euclidean norm, flast, general relativity, manifolds, math, mathematics, maths, metrics, norms, other, perspectives, psychology, quasimetrics, race, racism, Rene Descartes, self, Sir Isaac Newton, spacetime
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Geotagging
Geotagged photos (e.g. flickr) and text (e.g. twitter) associate data to a particular point on the globe × time. In other words, a fibre bundle over S²×T. Imagine the position future historians will be in — if they can synthesise … Continue reading
Posted in Uncategorized
Tagged abstract algebra, China, Confucius, Discourse on Salt and Iron, fibration, fibre bundle, flickr, future history, geotagging, Han dynasty, Han Feizi, history, iron, math, mathematics, maths, Mencius, salt, spacetime, technology, twitter, www, Yan tie lun, Zhaodi
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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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February 18, 2011
Tagged art, general relativity, graph theory, group theory, groups, heroes, homotopy, loop quantum gravity, manifolds, math, mathematics, maths, matrices, matrix algebra, parallel transport, quantization, science, spacetime, special unitary group, spin foam, spin network, SU(2), tetrad, tetrads, vierbein, wizardry
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