Geodesic
All functions are locally $s$-harmonic up to a small error
Journal of the European Mathematical Society, Tome 19 (2017) no. 4, pp. 957-966.

Voir la notice de l'article provenant de la source EMS Press

We show that we can approximate every function f∈Ck(B1​​) by an s-harmonic function in B1​ that vanishes outside a compact set.
DOI : 10.4171/jems/684
Classification : 35-XX, 34-XX, 60-XX
Keywords: Density properties, approximation, s-harmonic functions 
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     author = {Serena Dipierro and Ovidiu Savin and Enrico Valdinoci},
     title = {All functions are locally $s$-harmonic up to a small error},
     journal = {Journal of the European Mathematical Society},
     pages = {957--966},
     publisher = {mathdoc},
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Serena Dipierro; Ovidiu Savin; Enrico Valdinoci. All functions are locally $s$-harmonic up to a small error. Journal of the European Mathematical Society, Tome 19 (2017) no. 4, pp. 957-966. doi : 10.4171/jems/684. http://geodesic.mathdoc.fr/articles/10.4171/jems/684/

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