Austin Chang Messages 38 Reaction score 0 Thread starter Apr 8, 2017 #1 How does lemma 18.2.2 imply the definition? Attachments Screen Shot 2017-04-08 at 2.50.48 PM.png 68.1 KB · Views: 521
andrewkirk Science Advisor Homework Helper Insights Author Gold Member Messages 4,140 Reaction score 1,741 Apr 8, 2017 #2 It doesn't. A definition is not deduced, it is simply stated.