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If m in N and mgeq2 prove that: |1 1 1\...

If `m in N` and `mgeq2` prove that: `|1 1 1\ ^m C_1\ ^(m+1)C_1\ ^(m+2)C_1\ ^m C_2\ ^(m+1)C_2\ ^(m+2)C_2|=1` .

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