Ideals of operators strictly singular on subspaces
Ideals of operators strictly singular on subspaces
For each set <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="normal upper Omega"> <mml:semantics> <mml:mi mathvariant="normal">Ω<!-- Ω --></mml:mi> <mml:annotation encoding="application/x-tex">\Omega</mml:annotation> </mml:semantics> </mml:math> </inline-formula> of cardinality at most <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="2 Superscript omega"> <mml:semantics> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msup> <mml:mn>2</mml:mn> <mml:mi>ω<!-- ω --></mml:mi> </mml:msup> </mml:mrow> <mml:annotation encoding="application/x-tex">{2^\omega }</mml:annotation> </mml:semantics> </mml:math> </inline-formula>, we give an …