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Tag Archives: groups
In the loop quantum gravity approach, spacetime 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 3dimensional 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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How come you can turn a Tshirt inside out? The automorphism group of a 3times punctured sphere has 12 pathcomponents (12 elements up to isotopy). There are 6 elements that preserve orientation, and 6 that reverse. In particular the orientationreversing … Continue reading
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43 252 003 274 489 856 000 I respect the cube. I cannot fathom it. I do not want to learn how to do it from anybody else. Instead I want to experience the simple moves that hopelessly and mercilessly turn order into disorder. Whichever way … Continue reading