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Answers for “为什么在称 C^n 为 R-模之前必须验证 $(xy+yx+I)v=0$?”

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One must verify this to ensure the scalar multiplication is well-defined. Since xy+yxxy+yx is in the ideal II, its coset is the zero element in RR.

Conditions: R=C⟨x,y⟩/⟨xy+yx⟩R = \mathbb{C}\langle x,y\rangle / \langle xy+yx\rangle.; The proposed action is (x+I)v=Xv(x+I)v=Xv and (y+I)v=Yv(y+I)v=Yv.; X,YX,Y satisfy XY+YX=0XY+YX=0.

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