Thursday, November 21, 2013 1:00 pm
-
1:00 pm
EST (GMT -05:00)
University theorem for polynomial invartiants on ribbon graphs with flags.
Speaker: | Avohou Remi Cocou |
---|---|
Affiliation: | University d'Abomey Calavi |
Room: | Mathematics and Computer Building (MC) 5136 |
Abstract:
In
my
presentation,
I
will
recall
the
Bollobas-Riordan
polynomial
for
ribbon
graphs
and
its
universality
property.
This
polynomial
finds
an
extension
on
a
new
category
of
graphs
called
ribbon
graphs
with
flags
introduced
in
arxiv:
1301.1987
[math.CO].
I
will
discuss
the
universality
theorem
for
this
new
polynomial
as
well
as
another
polynomial
on
some
equivalence
classes
of
ribbon
graphs
generated
by
flag
moves.
My
presentation
is
mainly
based
on
arxiv:
1310.3708
[math.CO].