69KiB, 1047x811, proof.png View SameGoogleiqdbSauceNAO Anonymous Tue 23 Feb 14:02:19 2021 No.12745592 ViewReplyOriginalReport Quoted By: >>12745612 >>12745676 >>12746545 >>12746641 >>12746730 Any mathematicians around? I have hard time understanding how the observations about the inclusions in the range and the orthogonal complement of the range leads to the wanted result. Any advise would be appreciated.
