Hot Questions - Stack Exchange13d agoIs the rearranging operator continuous? – math.stackexchange.comAndrew_RenLet ℓ1(1)={x=(xi)i≥1:xi≥0, ∑i=1∞xi=1}.\ell_1^{(1)} = \left\{ x=(x_i)_{i\ge1} : x_i\ge 0,\; \sum_{i=1}^{\infty} x_i =1 \right\}.ℓ1(1)={x=(xi)i≥1:xi≥0,i=1∑∞xi=1}. Equip ℓ1(1)\ell_1^{(1)}ℓ1(1) with the metric induced by the ℓ1\ell^1ℓ1 norm: d(x,y)=∥x−y∥1=...d(x,y) = \|x-y\|_1 = ...d(x,y)=∥x−y∥1=...Read at Hot Questions - Stack ExchangeTagsmathematicsoptimization