Beschreibung:
<p>We show that every Borel measure on the circle whose Fourier spectrum has lacunary-type gaps annihilates every <inline-formula content-type="math/mathml">
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper H">
<mml:semantics>
<mml:mi>H</mml:mi>
<mml:annotation encoding="application/x-tex">H</mml:annotation>
</mml:semantics>
</mml:math>
</inline-formula>-set.</p>