Killing form
Saturday, 13 August 2011
Killing form
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In mathematics, the Killing form, called afterwards Wilhelm Killing, is a symmetric bilinear anatomy that plays a basal role in the theori...
Various definitions
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Consider a Lie algebra g over a acreage K. Every aspect x of g defines the adjoint endomorphism ad(x) (also accounting as adx) of g with the...
Properties
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The Killing anatomy B is bilinear and symmetric. The Killing anatomy is an invariant form, in the faculty that it has the 'associativi...
Matrix elements
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Given a basis ei of the Lie algebra g, the matrix elements of the Killing form are given by B^{ij}= tr (\textrm{ad}(e^i)\circ \textrm{...
Connection with real forms
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Suppose that g is a semisimple Lie algebra over the acreage of absolute numbers. By Cartan's criterion, the Killing anatomy is nondegene...
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