Invertibility-preserving maps of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="$C^*$"><mml:msup><mml:mi>C</mml:mi><mml:mo>∗</mml:mo></mml:msup></mml:math>-algebras with real rank zero
Abstract and applied analysis