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Speaker:
JungHwan Park
Zugehörigkeit:
Georgia Institute of Technology (GIT)
Datum:
Mit, 18/09/2019 - 10:30 - 10:55
Location:
MPIM Lecture Hall
Parent event:
Workshop on 4-manifolds, September 16 - 20, 2019 We find some restrictions on the intersection forms of smooth definite manifolds bounded by rational homology spheres which are rationally cobordant to lens spaces. As a first consequence, we show that several natural maps to the rational homology cobordism group have infinite rank cokernels. Further, we show that there is no $n$ such that every lens space smoothly embeds in $n$ copies of the complex projective plane. This is joint work with Paolo Aceto and Daniele Celoria.
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