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SUMMARY:Erik van Erp (Dartmouth College)
DTSTART:20201104T200000Z
DTEND:20201104T210000Z
DTSTAMP:20260420T052852Z
UID:NYC-NCG/30
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/NYC-NCG/30/"
 >The Heisenberg calculus\, index theory\, and cyclic cohomology</a>\nby Er
 ik van Erp (Dartmouth College) as part of Noncommutative geometry in NYC\n
 \n\nAbstract\nOn a compact contact manifold\, a pseudodifferential operato
 r with an invertible symbol in the Heisenberg calculus is a hypoelliptic F
 redholm operator. Its symbol determines an element in the K-theory of the 
 noncommutative algebra of Heisenberg symbols. In joint work with Alexander
  Gorokhovksy\, we construct a cyclic cocycle which\, when paired with the 
 Connes-Chern character of the principal Heisenberg symbol\, calculates the
  index.\n
LOCATION:https://researchseminars.org/talk/NYC-NCG/30/
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