Remark 34.8.1.label The condition in the sign decomposition that $x^{+}x^{-} = x^{-}x^{+} = 0$ is essential. Otherwise I may use silly decompositions like $0 = 1 - 1$.
Remark 34.8.1.label The condition in the sign decomposition that $x^{+}x^{-} = x^{-}x^{+} = 0$ is essential. Otherwise I may use silly decompositions like $0 = 1 - 1$.
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