76 citations · 308 across the 22 of their papers we have counts for
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math.SG2008
The sharp energy-capacity inequality
Michael Usher
Using the Oh-Schwarz spectral invariants and some arguments of Frauenfelder, Ginzburg, and Schlenk, we show that the π_1-sensitive Hofer-Zehnder capacity of any subset of a closed…
math.SG2008★ 1 cited
Floer homology in disc bundles and symplectically twisted geodesic flows
Michael Usher
We show that if K: P \to R is an autonomous Hamiltonian on a symplectic manifold (P,Ω) which attains 0 as a Morse-Bott nondegenerate minimum along a symplectic submanifold M, and i…