| The first number in the ordered pairs for each outcome is the payoff to the row player, the second number the payoff to the column player. |
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| In 1814 Argand had represented the complex numbers as points on the plane, that is as ordered pairs of real numbers. |
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| In addition to his work on geometry, Bolyai developed a rigorous geometric concept of complex numbers as ordered pairs of real numbers. |
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| On 4 November 1833 Hamilton read a paper to the Royal Irish Academy expressing complex numbers as algebraic couples, or ordered pairs of real numbers. |
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| Relation, in logic, a set of ordered pairs, triples, quadruples, and so on. |
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| From there analogy was understood as identity of relation between any two ordered pairs, whether of mathematical nature or not. |
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| For example, if a unary function is considered as a set of ordered pairs, then the domain and codomain are given by the first and second projections, respectively. |
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| Finally, Edges are ordered pairs of Nodes. |
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| Mathematical concepts that are taught include how to plot data points from a table, how to label ordered pairs, and how to name coordinates on a grid. |
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