• Medientyp: E-Artikel
  • Titel: Ribbon concordance of knots is a partial ordering
  • Beteiligte: Agol, Ian
  • Erschienen: American Mathematical Society (AMS), 2022
  • Erschienen in: Communications of the American Mathematical Society
  • Sprache: Englisch
  • DOI: 10.1090/cams/15
  • ISSN: 2692-3688
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: <p>In this note we show that ribbon concordance forms a partial ordering on the set of knots, answering a question of Gordon [Math. Ann. 257 (1981), pp. 157–170, Conjecture 1.1]. The proof makes use of representation varieties of the knot groups to <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper S upper O left-parenthesis upper N right-parenthesis"> <mml:semantics> <mml:mrow> <mml:mi>S</mml:mi> <mml:mi>O</mml:mi> <mml:mo stretchy="false">(</mml:mo> <mml:mi>N</mml:mi> <mml:mo stretchy="false">)</mml:mo> </mml:mrow> <mml:annotation encoding="application/x-tex">SO(N)</mml:annotation> </mml:semantics> </mml:math> </inline-formula> and the subquotient relation between them induced by a ribbon concordance.</p>
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