Date: Feb 19th, Tuesday
Time: 12:50 pm
Place: Little 339 (the Atrium)
Speaker: Dr. Foata
 

Title:
"A new transformation on signed words"

Abstract:
The statistics major index and inversion number, usually
defined on ordinary words, have their counterparts in signed
words, namely the so-called flag-major index and
flag-inversion number. We give the construction of a new
transformation on those signed words that maps the former
statistic onto the latter one.
The transformation also preserves two other set-statistics: the
inverse ligne of route and the lower records.



The pizza and drinks will be provided at 12:30 pm.