Collide (Skillet album) Collide (Skillet album) Collide is the fifth full-length album by Christian rock band Skillet. It was originally released on November 18, 2003 under Ardent Records. The album was re-released through Lava Records on May 25, 2004 with the bonus track "Open Wounds". The album peaked at No. 179 on the "Billboard" 200 and No. 5 on the Top Heatseekers. The album artwork is, according to John Cooper, faith and fear colliding. This is also Skillet's first full album to feature Ben Kasica on lead guitar. A video was made for the song "Savior". The music video shows the band playing
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