diffeomorphisms pseudometrics covectors Pises fields Frolicher hypersurface Sasakian fuchsii integrability Uppalapadu morphic Kervaire hsb Hypogonadism anticommute coframe phiQundx HPSG RECOMMENDED Proca SOBI tuple 28978 lambdaQundB Bcc defined complexified symplectic manifold naphthenate Sulfonation