(subclass OrdinaryDifferentialEquation DifferentialEquation) | engineering.kif 188-188 | Ordinary differential equation is a subclass of differential equation |
(subclass BesselsEquation OrdinaryDifferentialEquation) | engineering.kif 194-194 | Bessels equation is a subclass of ordinary differential equation |
(subclass VanderpolsEquation OrdinaryDifferentialEquation) | engineering.kif 199-199 | Vanderpols equation is a subclass of ordinary differential equation |
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