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DTSTAMP:20201105T200000Z
UID:1604065953966@events.msu.edu
CATEGORIES:Conferences / Seminars / Lectures
DTSTART:20201105T200000Z
DTEND:20201105T205000Z
SUMMARY:Math Seminar Series
DESCRIPTION:
 Combinatorics and Graph Theory\n
 \n
 Thomas McConville 
 from Kennesaw State University will be 
 speaking.\n
 \n
 The presentation is titled "The 
 non-revisiting chain property for grid associahedra."\n
 \n
 Contact 
 Bruce E Sagan (bsagan@msu.edu) 
 for more information.\n
 \n
 A grid associahedron 
 is a simple polytope whose faces correspond 
 to nonkissing collections of routes inside 
 a grid graph. The usual associahedron arises 
 as a special case when the graph is a 2 by 
 n rectangle. Other examples of grid associahedra 
 have been considered in connection with 
 combinatorial properties of Grassmannians and 
 with the representation theory of gentle algebras. 
 The 1-skeleton of the grid associahedron 
 has a natural orientation that induces the 
 grid-Tamari order, a poset with many remarkable 
 properties. I will present a new construction 
 of the grid associahedron as a Minkowski 
 sum of order polytopes of fence posets. Using 
 this construction, I will show that the grid-Tamari 
 order has the non-revisiting chain 
 property. This is based on joint work with Alexander 
 Garver.\n\n
 Price: free\n
 Sponsor: Department of Mathematics\n
 Sponsor's Homepage: https://www.math.msu.edu/\n
 Contact name: Department of Mathematics\n
 Contact phone: (517) 353-0844\n
 for more info visit the web at:\n 
 https://www.math.msu.edu/Seminars/CalendarView.aspx?month-of=September2016\n
LOCATION:Zoom link provided on Math Seminars page
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