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gr-qc2004★ 3 cited
A discrete curvature on a planar graph
M. Lorente
Given a planar graph derived from a spherical, euclidean or hyperbolic tessellation, one can define a discrete curvature by combinatorial properties, which after embedding the grap…
gr-qc2004
Discrete quantum gravity: the Lorentz invariant weight for the Barrett-Crane model
M. Lorente
In a recent paper [1] we have constructed the spin and tensor representations of SO(4) from which the invariant weight can be derived for the Barrett-Crane model in quantum gravity…
gr-qc2003★ 1 cited
Quantum process and the foundation of relational theories of space-time
M. Lorente
We present current theories about the structure of space and time, where the building blocks are some fundamental entities (yes-no experiment, quantum processes, spin net-work, pre…