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We perform a covariant constraint analysis of massive gravity valid for itsentire parameter space, demonstrating that the model generically propagatesfive degrees of freedom; this is also verified by a new and streamlinedHamiltonian description. The constraint's covariant expression permitscomputation of the model's caustics. Although new features such as thedynamical Riemann tensor appear in the characteristic matrix, the model stillexhibits the pathologies uncovered in earlier work: superluminality and likelyacausalities.

Covariant constraints for generic massive gravity and analysis of its characteristics