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# Notation - Chapter 2

 Letters free variables of a lower or upper bound an infinitesimal coefficients of a lower or upper bound function describing a lower or upper bound functions/operators constant intervals linear intervals function arguments Functions rounded operators function model of , which satisfies interval inclusion property for g(x) is undefined the function g restricted to domain of g Intervals width of interval i range of interval i lower and upper bound of interval i interval interval, with domain described by d interval, with continuity described by d domain of interval i a property of interval i continuity property of interval i Demotions pessimistic and optimistic boolean demotion ``round down'', ``round to nearest'', ``round up'' pessimistic and optimistic linear interval demotion Miscellaneous true, unknown, and false g has the property of being defined at x positive and negative infinity subset

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 Jeff Tupper March 1996