“s Journal, which he further developed in 1880 as well as in 1885. Recounting lectures of Weierstrass, he there introduced the hyperboloid model of hyperbolic geometry described by Weierstrass coordinates. He is also credited with formulating transformations mathematically equivalent to Lorentz transformations in n dimensions in 1885. Killing invented Lie algebras independently of Sophus Lie around 1880. Killing”
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