Question: Using the ortho normality of | +) and | - >, prove [Si, Sj] = iijkhSk, {Si, Sj} = (h2/2) ij, where Sx = h/2

Using the ortho normality of | +) and | - >, prove [Si, Sj] = iεijkhSk, {Si, Sj} = (h2/2) δij, where Sx = h/2 (| +> < – | + |– > < + –),Sy = ih/2 (– | + > < – | + | – > < + |>,

Sz = h/2 (| +> < +| – | – > < –|).

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