Weather Wizard the Superman Theory. Weather Wizard originally wielded a wand that enabled him to control weather patterns. Weather Wizard has used it to produce blizzards, summon lightning bolts, fly using air currents, produce fog and generate winds. Essentially Weather Wizard can produce any type of weather pattern imaginable, as well as other phenomenon such as tornadoes. Recently Inertia destroyed his wand, using 30th Century psychological therapies to remove Weather Wizard's mental blocks. He can now control the weather without his wand. Weather Wizard has also shown limited control over magnetism. In The New 52 reality, Mardon returns to using his wand,
Single crossing condition ordered set. Such situations appear often in information economics, contract theory, social choice and political economics, among other fields. The term Single-Crossing Condition (Spence Mirrlees property) refers to the requirement that the isoutility curve for agents of different types cross only once. This condition guarantees that the transfer in a incentive-compatible direct mechanism can be pinned down by the transfer of the lowest type. This condition is similar to another condition called Strict Increasing Difference (SID). Formally, suppose the agent has a utility function formula_7, the SID says formula_8 we have formula_9. The Spence-Mirrlees Property is characterized by formula_10. Single