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DTSTART:20250309T070000
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DTSTART:20241103T060000
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DTSTART;TZID=America/Toronto:20250609T113000
SEQUENCE:0
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/algebraic-gr
 aph-theory-blas-fernandez
SUMMARY:Algebraic Graph Theory-Blas Fernandez
CLASS:PUBLIC
DESCRIPTION:TITLE: 2-Y-homogeneous distance-biregular graphs\n\nSPEAKER:
 \n\nBlas Fernandez\n\nAFFILIATION:\n IMFM\, Ljubljana\; UP FAMNIT\, Koper\
 , Slovenia\n\nLOCATION:\n Please contact Sabrina Lato for Zoom link.\n\n
 ABSTRACT: Distance-biregular graphs (DBRGs) generalize\ndistance-regular 
 graphs by admitting a bipartition of the vertex set\,\nwhere each part sat
 isfies local distance-regularity  under distinct\nintersection arrays. In
  recent years\, a particular subclass of these\ngraphs\, those satisfying 
 the so-called 2-Y-homogeneous condition\, has\ngarnered increasing attent
 ion due to its rich connections with\ncombinatorial design theory and the 
 representation theory of\nTerwilliger algebras. In this talk\, we will exa
 mine the key structural\nconditions that characterize 2-Y-homogeneous DBR
 Gs. We will survey\nrecent progress in their classification under various 
 combinatorial\nconstraints\, highlighting both known results and open prob
 lems.
DTSTAMP:20260403T081832Z
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