Text should include definition for \prod and \sum functions

[jaoswald]

Chapter 4 includes examples and exercises using the \prod(i,j,...) and \sum(i,j,..) notations for boolean functions, apparently meaning "and of ith, jth, ... maxterms" and "or of the ith, jth, ... minterms" respectively, but does not provide definitions for them. I was able to guess the definition of \sum by carefully examining Example 8, but had to find another textbook to understand \prod. Including at least a footnote definition would be helpful.

Note: basing this on print release 1.10 (4 May 2012), and a reading of chapter4.tex.

[fabriziotappero]

I am not completely sure I understand the issue. Could you please provide a suggestion of what you would like to see in an hypothetical footnote? thanks