<math> <apply> <eq/> <apply> <semantics> <mi>rank</mi> <annotation-xml encoding="OpenMath"> <OMS name="rank" cd="linalg3" xmlns="http://www.openmath.org/OpenMath"/> </annotation-xml> </semantics> <apply> <times/> <apply> <transpose/> <ci>u</ci> </apply> <ci>v</ci> </apply> </apply> <cn>1</cn> </apply> </math>