Upset (disambiguation)
Encyclopedia
Upset may refer to:
  • Upset
    Upset
    An 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' War
    Man O' War
    Man 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 set
    Upper set
    In 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 mathematics
    Mathematics
    Mathematics 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 set
    Partially ordered set
    In 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.
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