比利时vs摩洛哥足彩
,
university of california san diego
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math 211b - group actions seminar
lauren wickman
university of florida
knaster continua and projective fraïssé theory
abstract:
the knaster continuum, also known as the buckethandle, or the brouwer–janiszewski–knaster continuum can be viewed as an inverse limit of 2-tent maps on the interval. however, there is a whole class (with continuum many non-homeomorphic members) of knaster continua, each viewed as an inverse limit of p-tent maps, where p is a sequence of primes. in this talk, for each knaster continuum k, we will give a projective fraïssé class of finite objects that approximate k (up to homeomorphism) and examine the combinatorial properties of that the class (namely whether the class is ramsey or if it has a ramsey extension). we will give an extremely amenable subgroup of the homeomorphism group of the universal knaster continuum.
host: brandon seward
february 10, 2022
12:00 pm
zoom id: 967 4109 3409
email an organizer for the password
research areas
ergodic theory and dynamical systems****************************