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SUMMARY:Sandra Kingan (Brooklyn College and the Graduate Center\, CUNY)
DTSTART:20260716T193000Z
DTEND:20260716T195500Z
DTSTAMP:20260710T111747Z
UID:CANT2026/54
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CANT2026/54/
 ">Deletable edges in 3-connected graphs and their applications</a>\nby San
 dra Kingan (Brooklyn College and the Graduate Center\, CUNY) as part of Co
 mbinatorial and additive number theory seminar (CANT 2026)\n\nLecture held
  in Science Center in the CUNY Graduate Center (4th floor).\n\nAbstract\nI
  will analyze 3-connected graphs that contain a fixed 3-connected graph $H
 $ as a minor\, but in which no edge can be deleted while preserving 3-conn
 ectivity and an  $H$-minor. Let $G$ and $H$ be simple 3-connected graph su
 ch that $G$ has an $H$-minor.   An edge $e$ in $G$ is called $H$-deletabl
 e if $G\\backslash e$ is 3-connected and has an $H$-minor. If $G$ has no $
 H$-deletable edge\, then $G$ can be reduced to $H$ using three specific lo
 cal operations.  This gives a framework for studying extremal graphs with
  no $H$-deletable edges and yields applications to excluded-minor question
 s. This talk is based on a paper in Discrete Mathematics (Vol 349\, Issue 
 6).\n
LOCATION:https://researchseminars.org/talk/CANT2026/54/
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