| Equation(equation) | | equation |
| appearance as argument number 1 |
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| (documentation Equation EnglishLanguage "a mathematical statement that two expressions are equal.") | engineering.kif 143-144 | |
| (lexicon Equation LexNoun "equation") | engineering.kif 145-145 | |
| (subclass Equation Proposition) | engineering.kif 146-146 | Equation is a subclass of proposition |
| appearance as argument number 2 |
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| consequent |
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| (<=> (instance ?X DifferentialEquation) (instance ?X (AttrFn Equation DifferentialAttribute))) |
engineering.kif 151-153 | X is an instance of differential equation if, only if X is an instance of the attr of equation, and differential attribute |
| (=> (and (property ?OBJECT ?ATTRIBUTE) (instance ?ATTRIBUTE EquationAttribute)) (or (instance ?OBJECT Equation) (instance ?OBJECT SetOfEquations))) |
engineering.kif 207-213 | If X the attribute Y and Y is an instance of equation attribute, then X is an instance of equation or X is an instance of set of equations |
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