Artemisia (genus) as a remedy against hangovers and nightmares. "Artemisia absinthium" is used to make the highly potent spirits absinthe. Malört also contains wormwood. The aperitif vermouth (derived from the German word "Wermut", "wormwood") is a wine flavored with aromatic herbs, but originally with wormwood. "Artemisia arborescens" (tree wormwood, or "sheeba" in Arabic) is an aromatic herb indigenous to the Middle East used in tea, usually with mint. A few species are grown as ornamental plants, the fine-textured ones used for clipped bordering. All grow best in free-draining sandy soil, unfertilized, and in full sun. "Artemisia stelleriana" is known as Dusty Miller,
Additive polynomial whether there are other additive polynomials except these linear combinations. The answer is that these are the only ones. One can check that if "P"("x") and "M"("x") are additive polynomials, then so are "P"("x") + "M"("x") and "P"("M"("x")). These imply that the additive polynomials form a ring under polynomial addition and composition. This ring is denoted This ring is not commutative unless "k" equals the field formula_8 (see modular arithmetic). Indeed, consider the additive polynomials "ax" and "x" for a coefficient "a" in "k". For them to commute under composition, we must have or "a" − "a" = 0. This