`BookProof.ChapterWignerLittleGroup.nullElt_conj_translation` (a b : ℂ) (ha : a * (starRingEnd ℂ) a = 1) : nullElt a 0 * nullElt 1 b * nullElt ((starRingEnd ℂ) a) 0 = nullElt 1 (a

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`BookProof.ChapterWignerLittleGroup.nullElt_conj_translation` (a b : ℂ) (ha : a * (starRingEnd ℂ) a = 1) : nullElt a 0 * nullElt 1 b * nullElt ((starRingEnd ℂ) a) 0 = nullElt 1 (a · Prove2Me