Skillet (band) during September and October 2016. In December 2016, a 27-city, second leg of the tour was announced. Opening for Skillet on this second leg were Sick Puppies and Devour the Day. In 2017, Skillet opened for Korn and Stone Sour on the second half of The Serenity of Summer Tour which started in Syracuse, New York on July 19 and finished in Cleveland, Ohio August 2. Starting November 5, 2017, Skillet joined Britt Nicole, Colton Dixon, Tauren Wells, and Gawvi for five shows on the Air1 Hits Tour across the central United States. In 2018, Skillet headlined the Winter Jam
Envy-free item assignment the agents' utilities are not additive, the MNW solution is not necessarily EF1; but if the agents' utilities are at least submodular, the MNW solution satisfies a weaker property called "Marginal-Envy-Freeness except-1-item" (MEF1). There is an alternative criterion called Envy-freeness-except-cheapest (EFx): For each two agents A and B, if we remove from the bundle of B "any" item, then A does not envy B. EFx is strictly stronger than EF1. As of this writing, it is not known whether EFx allocations always exist. Given an allocation "X", define the envy ratio of "i" in "j" as: so the ratio is