Finite index subfactors and Hopf algebra crossed products
Finite index subfactors and Hopf algebra crossed products
We show that if <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="bold upper N subset-of-or-equal-to bold upper M subset-of-or-equal-to bold upper L subset-of-or-equal-to bold upper K"> <mml:semantics> <mml:mrow> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="bold">N</mml:mi> </mml:mrow> </mml:mrow> <mml:mo>⊆<!-- ⊆ --></mml:mo> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="bold">M</mml:mi> </mml:mrow> </mml:mrow> <mml:mo>⊆<!-- ⊆ --></mml:mo> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mrow …