Nonexistence of equivariant degree one maps
Nonexistence of equivariant degree one maps
We establish the nonexistence of equivariant maps between some classes of manifolds carrying <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper G"> <mml:semantics> <mml:mi>G</mml:mi> <mml:annotation encoding="application/x-tex">G</mml:annotation> </mml:semantics> </mml:math> </inline-formula>-free actions and spheres, whose degree is prime to <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="StartAbsoluteValue upper G EndAbsoluteValue"> <mml:semantics> <mml:mrow> <mml:mo>|</mml:mo> <mml:mi>G</mml:mi> <mml:mo>|</mml:mo> </mml:mrow> <mml:annotation encoding="application/x-tex">\left …