Hyperboloidal foliations with scri-fixing in spherical symmetry

Hyperboloidal Slices and Artificial Cosmology for Numerical Relativity

Hyperboloidal slices for the wave equation of Kerr-Schild metrics and numerical applications

Hypercomplex Numbers, Associated Metric Spaces, and Extension of Relativistic Hyperboloid

Hyperelliptic integrals and Hořava-Lifshitz black hole space-times

Hyperentropic systems and the generalized second law of thermodynamics

Hyperextended Scalar-Tensor Gravity

Hyperfast Interstellar Travel in General Relativity

Hyperfluid - a model of classical matter with hypermomentum

Hypergravity and Categorical Feynmanology

Hypersurface homogeneous locally rotationally symmetric spacetimes admitting conformal symmetries

Hypersurface-orthogonal generators of an orthogonally transitive transitive $G_2I$, topological identifications, and axially and cylindrically symmetric spacetimes

Hypertime Formalism for Spherically Symmetric Black Holes and Wormholes

Hypothesis of path integral duality: Applications to QED

Hypothetical Gravity Control and Implications for Spacecraft Propulsion