Mathematics
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Videos linked to 57R65 Surgery and handlebodiesMore +
![Equivariant trisections for group actions on four-manifolds]()
58:14published on October 30, 2025Equivariant trisections for group actions on four-manifolds
By Jeffrey Meier
![Contact flows and Birkhoff sections - Part 3]()
01:02:45published on May 2, 2023Contact flows and Birkhoff sections - Part 3
By Pierre Dehornoy , Anne Vaugon
![Contact flows and Birkhoff sections - Part 2]()
58:04published on May 2, 2023Contact flows and Birkhoff sections - Part 2
By Pierre Dehornoy , Anne Vaugon
![Contact flows and Birkhoff sections - Part 1]()
01:01:07published on May 2, 2023Contact flows and Birkhoff sections - Part 1
By Pierre Dehornoy , Anne Vaugon
![Trisections diagrams and surgery operations on embedded surfaces]()
01:03:10published on February 18, 2018Trisections diagrams and surgery operations on embedded surfaces
By David Gay
