Tokens can be abstract.Logical formLearned from4 sentences. A type can be abstract.Logical formLearned from4 sentences. A (program representation) can be abstract.Logical formLearned from4 sentences. A revolution can be abstract.Logical formLearned from4 sentences. Highlights can be abstract.Logical formLearned from4 sentences. Chapters can be on abstract (data types).Logical formLearned from4 sentences. A background can be in abstract algebra.Logical formLearned from4 sentences. Abstract models can be simple.Logical formLearned from4 sentences. A notion can be abstract.Logical formLearned from4 sentences. Terms can be abstract.Logical formLearned from4 sentences. A movie can be abstract.Logical formLearned from4 sentences. A (coordination model) can be abstract.Logical formLearned from4 sentences. Generators can be abstract.Logical formLearned from4 sentences. A float can be abstract.Logical formLearned from4 sentences. A demand can be abstract.Logical formLearned from4 sentences.