# Difference: SocialChoiceErrata (3 vs. 4)

#### Revision 42010-02-28 - KevinLeytonBrown

Line: 1 to 1

 META TOPICPARENT name="Errata"

## Chapter 9: Aggregating Preferences: Social Choice

• Page number:
Line: 13 to 13

• Name:
• Email:
• Content:
Deleted:
<
<
• Page number: 254
• Section number:9.1.1
• Date: 2009/02/06
• Name: SteveWolfman
• Email:
• Content: Typo: "..that if there exists a candidate x such that if for all other candidates y at.." should be "..that if there exists a candidate x such that for all other candidates y at..". (It also seems strange that the rest of the paragraph talks about Condorcet "ruling out" candidates rather than establishing b as the only viable candidate, since Condorcet may "rule out" all candidates in this sense but will only ever select one candidate.)

### The following errors are fixed in the second printing of the book and online PDF v1.1

• Page number: 256
Line: 33 to 27

• Name: SteveWolfman
• Email:
• Content: Typo, in the proof of Step 1, o \in \overbar{O} should be o \in \overbar{O'}.