Skillet (band) January 27, 2017 the band released a new recording of "Stars" with an acoustic style, which was included in the film, "The Shack". On November 17, 2017, they released a deluxe edition, "Unleashed Beyond", containing new material such as "Breaking Free", featuring Lacey Sturm and remixes of "Feel Invincible" and "The Resistance". Skillet also released a five-track EP containing remixes of "Feel Invincible". This was available to anyone who pre-ordered "Unleashed Beyond" from their website. The band's style has been described as Christian rock, Christian metal, alternative rock, hard rock, nu metal, and symphonic metal. The band's eponymous debut album
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