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URL:/combinatorics-and-optimization/events/algebraic-co
 mbinatorics-karen-yeats
SUMMARY:Algebraic Combinatorics - Karen Yeats
CLASS:PUBLIC
DESCRIPTION:Summary \n\nTITLE: Poset subHopf algebras from growth models in
  causal set\ntheory and quantum field theory\n\nSPEAKER:\n Karen Yeats\n\
 nAFFILIATION:\n University of À¶Ý®ÊÓƵ\n\nLOCATION:\n MC 5501 and Zoom - p
 lease contact Oliver Pechenik for the Zoom\nlink\n\nABSTRACT: In a story
  some of you have heard from me before\, we get\nsubHopf algebras of the C
 onnes-Kreimer Hopf algebra of rooted trees\nfrom certain simple tree class
 es which correspond to solutions to\ncombinatorial analogues of Dyson-Schw
 inger equations in quantum field\ntheory.  Another important subHopf alge
 bra of the Connes-Kreimer Hopf\nalgebra is the Connes-Moscovici Hopf algeb
 ra which can be viewed as\ncoming from rooted trees grown by adding leaves
 .\n 
DTSTAMP:20250523T153932Z
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