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We have extended the 't Hooft-Nobbenhuis complex transformations to includemass. Under these new transformations, Schrodinger, Dirac, Klein-Gordon andEinstein general relativity equations are invariant. The non invariance of thecosmological constant in Einstein field equations dictates it to vanish thussolving the longstanding cosmological constant problem.

A mass-extended 't Hooft-Nobbenhuis complex transformations and their consequences