@Misc{ BiaBraZag22, author = { Bianchi, Francesca and Brasco, Lorenzo and Zagati, Anna Chiara }, title = { On the sharp Hardy inequality in Sobolev-Slobodeckii spaces }, journal = { Math. Ann. }, year = { 2023 }, pages = { 47 }, URL = { http://cvgmt.sns.it/paper/5711/ }, note = { cvgmt preprint} }