[1651] A variant of Hall's lemma and maximal functions on the unit$n$-sphere

[1652] The subset of piecewise-linear mappings is dense in the space of$K$-quasiconformal mappings of the plane

[1653] Distinguished varieties

[1654] Zak's theorem on superadditivity

[1655] Power-law subordinacy and singular spectra I. Half-line operators