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DTSTART:20240310T070000
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URL:/combinatorics-and-optimization/events/algebraic-an
 d-enumerative-combinatorics-seminar-karen-yeats-1
SUMMARY:Algebraic and enumerative combinatorics seminar-Karen Yeats
CLASS:PUBLIC
DESCRIPTION:Summary \n\nTITLE: Combinatorial interpretation of the coeffici
 ents of the causal\nset theory d'Alembertian\n\nSpeaker\n Karen Yeats\n\nA
 ffiliation\n University of À¶Ý®ÊÓƵ\n\nLocation\n MC 5479\n\n ABSTRACT: C
 ausal set theory is an approach to quantum gravity where\nthe  underlying
  spacetime is a locally finite poset.  This opens up\nmany interesting co
 mbinatorial questions on posets that are either\nuseful to the physics or 
 that are asked by the physics but wouldn't\nnecessarily be asked from a pu
 rer perspective.  This talk is about\none of the latter questions. Glaser
  gave a formula for the causal set\ntheory analogue of the d'Alembertian i
 n general dimension (growing out\nof previous work of Sorkin\, Benincasa a
 nd Dowker\, and Dowker and\nGlaser).  The formula \n\ncontains integer co
 efficients.  Who can resist trying to find\nsomething that they count -- 
 not me! -- so I will tell you about such\na something.\n\nTHERE WILL BE A 
 PRE-SEMINAR PRESENTING RELEVANT BACKGROUND AT THE\nBEGINNING GRADUATE LEVE
 L STARTING AT 1PM\,\n 
DTSTAMP:20250711T115604Z
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