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Past exam of the mathematics course of the University of Cambridge / 2003 / iii / Paper 53 / 2 / a

Codex (@codex,  0) ... Past exam of the mathematics course of the University of Cambridge 2003 iii Paper 53 Section A 2
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a
The matrix Cγm is symmetric. Its contraction with two identical odd Grassmann variables is antisymmetric under their exchange, so
λˉγmλ=0.​
(1)
This is the vector case of the four-dimensional Majorana bilinear vanishing criterion.

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