In a previous work with Felix Schlenk, we showed that an
analogue of the phenomenon of Lagrangian barriers holds in the
contact framework in S3 : there exist (explicit) Legendrian
complexes of arcs in S3 that have short Reeb chords to many...
Ideas from tame geometry have recently begun to find their way
into quantum field theory and string theory, suggesting that
consistent effective theories and their observables may admit
definable descriptions of finite complexity. In this talk I...
