Errata
ErrataHere are the known errata in the third edition of Logic Primer by Colin Allen and Michael Hand, published by The MIT Press, 2022.
Please send any additional error reports to prof.colin.allen@gmail.com
Special thanks to Amy Kind and her students at Claremont McKenna College for noticing many of these errors, as well as to Torin Alter for his contributions.
| Page | Description |
|---|---|
| 20 | The explanation of the annotation for wedge-elim should be m,n ⋁E Line (3) in example (a) should read 1,2 ⋁E |
| 21 |
In examples (b) and (c) at the top, both occurrences of &I should be ⋁I In description and examples for wedge-intro, multiple occurrences of &E should be ⋁E |
| 22 | Example (a) line (3) should read 1,2 ⋁E |
| 24 | Example (b) line (5) should read 1,4⋁E |
| 25 | Ex. 2.1.1.i line (3) should be P&~Q |
| 26 | There should be no ____ space after P→~Q in line (1) of exercise item v. |
| 32 | S54 should have an asterisk, not S55. (See also p.112) |
| 29 | The columns in the example truth table should read (a)(d)(b)(c) from left to right. |
| 103 | 2.2.1 iv line (4) should read 1↔E |
| 112 | The answer labeled S55 is actually S54. (See also p.32) |
| 125 | Annotation at line (34) should read 33 ⋁I |
| 127 | The truth value under ~Q in the first row of the truth table should be T. |
| 131 | The answers to items vii and ix were incorrect. The correct answers are: vii. P:T Q:F R:T S:F T:T or F ix. P:T Q:T R:F S:T T:F |