Persons may use a normal curve.Logical formLearned from4 sentences. A curve can be for students.Logical formLearned from4 sentences. A (boundary curve) can be closed.Logical formLearned from4 sentences. Persons may get behind a curve.Logical formLearned from4 sentences. An iterator may subdivide a curve.Logical formLearned from4 sentences. Everyone can be on a (learning curve).Logical formLearned from4 sentences. Persons can be on a (learning curve).Logical formLearned from4 sentences. A government-agency can be in a curve.Logical formLearned from4 sentences. A (demand curve) can be for treasuries.Logical formLearned from4 sentences. A (yield curve) may pertain-to persons.Logical formLearned from4 sentences. A curve may manifest smoothness.Logical formLearned from4 sentences. A curve may pertain-to mountains.Logical formLearned from4 sentences. A point can be on an elliptic curve.Logical formLearned from4 sentences. A transformation can be between (curve points).Logical formLearned from4 sentences. A (calibration curve) may be constructed.Logical formLearned from4 sentences.