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Tag Archives: 2D
http://video.ted.com/assets/player/swf/EmbedPlayer.swf rats’ brains, and presumably ours, tessellate the plane surface we walk on with multiple overlapping triangular grids (is there a mathematical reason triangles are optimal? euler characteristic, perhaps?) “path” neurons in the hippocampus fire as we cross these grids … Continue reading
How to multiply matrices
This is for my homies in math class. Mathematical matrices are blocks of numbers, arrayed in 2D. (Higherdimensional arrays are called tensors.) Left “times” right equals target. Each entry in the target is the result of a series of +’s … Continue reading
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Tagged 2D, angle, array, econometrics, inner product, linear algebra, linear operators, math, mathematics, maths, matrices, matrix multiplication, numbers, ODE's, operators, systems of differential equations, tensor, vectors
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quasiperiodic tilings from a 15thcentury Uzbekistani madrasa Yeah, the same quasiperiodic tilings that theoretical physicist Roger Penrose wrote about in the 20th century. The same quasiperiodic tilings that Tony RobbinÂ says are the projections of a highdimensional cubic lattice onto 2D. … Continue reading