. "CPT self-conjugate" . "CPT symmetry" . "CPT invariance" . "CPT conservation (symmetry)" . "reversibility of physics" . . "CPT symmetry" . "conserve CPT" . . "more complicated symmetry" . . "particle-antiparticle charge & parity reversal" . . . . "time-reversal symmetry" . . "CPT" . . "reversible" . . . "CPT_symmetry" . "CPT-symmetric" . "CPT-invariance" . "CPT violation" . . "CPT theorem" .