The Jang equation, apparent horizons, and the Penrose inequality
The Jeans Instability in Presence of Viscous Effects
The Jeans Mechanism and Bulk-Viscosity Effects
The Jebsen-Birkhoff theorem in alternative gravity
The Kantowski-Sachs Space-Time in Loop Quantum Gravity
The Kasner Brane
The Kauffman bracket and the Jones polynomial in quantum gravity
The kernel and the injectivity of the EPRL map
The kernel of the edth operators on higher-genus spacelike two-surfaces
The Kerr spacetime: A brief introduction
The Kerr theorem, Kerr-Schild formalizm and multiparticle Kerr-Schild solutions
The Kerr Theorem, Multisheeted Twistor Spaces and Multiparticle Kerr-Schild Solutions
The Kerr-Schild ansatz for the Nariai spacetime and the generating conjecture
The kinematical frame of Loop Quantum Gravity I
The kinematical Hilbert space of Loop Quantum Gravity from BF theories
The kinematics of particles moving in rainbow spacetime
The KKW Generalized Analysis for a Magnetic Stringy Black Hole
The Klein first integrals in an equilibrium system with electromagnetic, weak, strong and gravitational interactions
The Klein-Gordon equation in Machian model
The Kretschmann scalar for 5D Vacua