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math.HO2021
Nilpotents Leave No Trace -- A Matrix Mystery for Pandemic Times
Eric L. Grinberg
Reopening a cold case, inspector Echelon, high-ranking in the Row Operations Center, is searching for a lost linear map, known to be nilpotent. When a partially decomposed matrix i…
math.HO2020
Morley Trisectors and the Law of Sines with Reflections
Eric L. Grinberg, Mehmet Orhon
We invoke the Law of Sines to prove Morley's Trisector Theorem. Though the sinusoidal function appears, the proof is safe for the trigonometrically distanced.