Upset (disambiguation)
Encyclopedia
Upset may refer to:
- UpsetUpsetAn upset occurs in a competition, frequently in electoral politics or sports, when the party popularly expected to win , is defeated by an underdog whom the majority expects to lose, defying the conventional wisdom...
, in a competition where a likely winner loses to an underdog. - Upset forging, a forging process where a workpiece's diameter is increased by compressing its length.
- Depression (mood)Depression (mood)Depression is a state of low mood and aversion to activity that can affect a person's thoughts, behaviour, feelings and physical well-being. Depressed people may feel sad, anxious, empty, hopeless, helpless, worthless, guilty, irritable, or restless...
, upset emotionally. - Upset, the only thoroughbred horse to defeat legendary racehorse Man o' WarMan O' WarMan O' War, man o' war or manowar may refer to:* Man-of-war, a warship* Man of war for uses with this spelling - Places :...
. - Upset (chemical release), an unplanned release of toxic emissions by chemical processing plants
- Upper setUpper setIn mathematics, an upper set of a partially ordered set is a subset U with the property that x is in U and x≤y imply y is in U....
, (in mathematicsMathematicsMathematics is the study of quantity, space, structure, and change. Mathematicians seek out patterns and formulate new conjectures. Mathematicians resolve the truth or falsity of conjectures by mathematical proofs, which are arguments sufficient to convince other mathematicians of their validity...
), also called an upward closed set or just an upset, is a subset Y of a given partially ordered setPartially ordered setIn mathematics, especially order theory, a partially ordered set formalizes and generalizes the intuitive concept of an ordering, sequencing, or arrangement of the elements of a set. A poset consists of a set together with a binary relation that indicates that, for certain pairs of elements in the...
(X,≤) such that, for all elements x and y, if x is less than or equal to y and x is an element of Y, then y is also in Y.