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    Equivalent definitions of BV space and of total variation on metric measure spaces

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    In this paper we introduce a new definition of BV based on measure upper gradients and prove the equivalence of this definition, and the coincidence of the corresponding notions of total variation, with the definitions based on relaxation of norm of the slope of Lipschitz functions or upper gradients. As in the previous work by the first author with Gigli and Savaré in the Sobolev case, the proof requires neither local compactness nor doubling and Poincaré

    Singular perturbation problems with a compact support semilinear term

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    Alberti, Giovanni; Ambrosio, Luigi; Buttazzo, Giuseppe. (1990). Singular perturbation problems with a compact support semilinear term. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/1530
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