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Addendum to “Morse theory of causal geodesics in a stationary spacetime via Morse theory of geodesics of a Finsler metric”. (English) Zbl 1286.58007
Summary: We give the details of the proof of equality (29) in [E. Caponio et al., ibid. 27, No. 3, 857–876 (2010; Zbl 1196.58005)].

##### MSC:
 58E05 Abstract critical point theory (Morse theory, Lyusternik-Shnirel’man theory, etc.) in infinite-dimensional spaces 53C60 Global differential geometry of Finsler spaces and generalizations (areal metrics) 53C22 Geodesics in global differential geometry
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