Questo manuale è il risultato di un corso di lezioni tenute all'Università di Oxford durante gli anni 1958-62 e nella primavera del 1961 all'Università del Texas. Scritto per gli studenti del primo anno di Logica, non richiede alcuna conoscenza preliminare dell'argomento. La chiarezza dell'esposizione e la ricchezza degli esercizi tutti risolti in questa edizione italiana permettono con opportuna gradualità di impadronirsi prima, e di servirsi poi, dei simboli e delle regole della moderna logica formale.
In general a very good introduction to logic. Perhaps a little outdated now. I generally find natural deduction a bit frustrating when other methods seem to follow a simpler and less error-prone algorithm and are easier to learn! Also the layout of the book is terrible which doesnt do justice to some of the brilliant content. Some terminology is deliberately used in an incorrect way just for this book, for example validity and soundness; there is no good reason to do this and it just adds to someones confusion as they are learning the subject. On the positive side lots of exercises... on the negative side no answers!
Very good beginning textbook on logic. I used it for course I helped teach long ago. Moves at a reasonable pace. Probably easier to learn than most logic books covering symbolic logic, but may still need the help of a teacher or logic friend.
Lemmon is clear, concise, and no nonsense in his presentation of using well-formed formulas and rules to create a comprehensive system of symbolic logic.
Explains in a very clear way how to use propositional calculus in order to verify the validity of an argument. There are still some things I have difficulty with, and I might have to read some more stuff in order to be ready for my exam in logic on Feb 3rd.