defined the signature defect of the boundary of a manifold as the eta invariant, and used this to show that Hirzebruch's signature defect of a cusp of a Hilbert modular surface can be expressed in terms of the value at s=0 or 1 of a Shimizu L-function.
David Hilbert | surface-to-air missile | Surface-to-air missile | Surface | Riemann surface | Hilbert space | Surface (TV series) | surface | Modular arithmetic | Hilbert | Fermi surface | Surface-mount technology | Naval Surface Warfare Center Crane Division | Naval Surface Warfare Center | Microsoft Surface | Hilbert transform | Type 91 Surface-to-air missile | Surface weather observation | Surface wave magnitude | Surface Water Ocean Topography Mission | Surface Warfare insignia | Surface texture | surface area | Shioda modular surface | Rodrigo Hilbert | Road surface | modular synthesizer | Modular building | Mars surface color | Kummer surface |