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Ivancevic_Applied-Diff-Geom

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686 <strong>Applied</strong> <strong>Diff</strong>erential <strong>Geom</strong>etry: A Modern IntroductionTheir quantization acts on S as⎛ ⎞−1 0 0 0q(w 1 ∧ w 1 + w 2 ∧ w 2 ) = 2 ⎜ 0 1 0 0⎟⎝ 0 0 0 0⎠0 0 0 0⎛ ⎞0 0 0 0q(w 1 ∧ w 2 ) = 2 ⎜1 0 0 0⎟⎝0 0 0 0⎠0 0 0 0⎛ ⎞0 −1 0 0q(w 1 ∧ w 2 ) = 2 ⎜0 0 0 0⎟⎝0 0 0 0⎠0 0 0 0⎛ ⎞0 0 0 0q(w 1 ∧ w 1 − w 2 ∧ w 2 ) = 2 ⎜0 0 0 0⎟⎝0 0 1 0 ⎠0 0 0 −1⎛ ⎞0 0 0 0q(w 1 ∧ w 2 ) = 2 ⎜0 0 0 0⎟⎝0 0 0 0⎠0 0 1 0⎛ ⎞0 0 0 0q(w 1 ∧ w 2 ) = 2 ⎜0 0 0 0⎟⎝0 0 0 −1⎠ .0 0 0 0As a result, we have the following Theorem: there are isomorphismsEnd( S + ) ∼ = Λ 0 C ⊕ Λ +C , End( S − ) ∼ = Λ 0 C ⊕ Λ −C .4.13.2.4 Hermitian Structure on the SpinorsThere is a canonical Hermitian structure on the space of positive spinorsS + given by the Hermitian inner product 〈 · , · 〉, which takes the value〈 s + , t + 〉 = s + 1 t+ 1 + s+ 2 t+ 2

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