🚧共軛四元數

🚧 under construction -> prove property (5)

數系四元數 ⟩ 共軛數 (conjugate)

若:p=s+u\mathbf{p} = {\color{orange}s} + \mathbf{u}, q=t+v\mathbf{q} = {\color{orange}t} + \mathbf{v}, q=tv\mathbf{\overline{q}} = {\color{orange}t} - \mathbf{v} 則:

  • 🎖 證明: 👉

  1. q2=qq=qq\|\mathbf{q}\|^2 = \mathbf{\overline{q}} \mathbf{q} = \mathbf{q} \mathbf{\overline{q}} ( 👉 四元數長度 )

  1. (1) pq=pq=qp=pq\mathbf{\overline{p \cdot q}} = \mathbf{\overline{p}} \cdot \mathbf{\overline{q}} = \mathbf{\overline{q}} \cdot \mathbf{\overline{p}} = \mathbf{p} \cdot \mathbf{q} (2) p×q=q×p\mathbf{\overline{p \times q}} = \mathbf{\overline{q}} \times \mathbf{\overline{p}} (3) p±q=p±q\mathbf{\overline{p \pm q}} = \mathbf{\overline{p}} \pm \mathbf{\overline{q}}

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