Abstract
A generalized cohomology, similar to Szulkin's cohomology but with moregeneral functorial properties, is constructed. This theory is used todefine a relative Morse index and to prove relative Morse relations forstrongly indefinite functionals on Hilbert spaces.
Citation
Alberto Abbondandolo. "A new cohomology for the Morse theory of strongly indefinite functionals on Hilbert spaces." Topol. Methods Nonlinear Anal. 9 (2) 325 - 382, 1997.
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