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SUMMARY:Obstructions in the Deformation Theory of Pasting Diagrams: Shrest
 ha's Polygonal Method. - David Yetter (Kansas State University)
DTSTART:20160412T131500Z
DTEND:20160412T141500Z
UID:TALK65244@talks.cam.ac.uk
CONTACT:Dr Ignacio Lopez Franco
DESCRIPTION:We formalize a method developed heuristically by T. Shrestha f
 or proving that the coboundaries of obstructions in categorical deformatio
 n theory are cocycles by encoding calculations as labelings of a 3-computa
 d with a single 3-cell and all lower dimensional cells on its boundary wit
 h arrow-valued operations of certain algebraic theories associated to a (k
 -linear) pasting diagram (or extensions thereof).
LOCATION:MR4\, Centre for Mathematical Sciences
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