Tips on using your textbook
(Friedberg, Insel, and Spence)
-
The book's notation for the set of real numbers is \( R \) rather
than \( {\bf R} \); for the complex numbers it is \( C \) rather
than \( {\bf C} \).
- Whenever the book refers to a field \( F \), you may assume
\( F ={\bf R} \) unless otherwise specified. (Later in the course
there may be times when we want to allow \( F = {\bf C} \).)
- Note that the authors use the non-italic numeral "0" for the
scalar ( i.e. number) 0, and an italic 0 for the zero
element of a vector space. If you read carefully and the book has no
typos, there should never be any confusion about whether something
is the zero scalar or the zero vector.
- Unless otherwise stated by the authors, lower-case letters near
the end of the alphabet, such as \( u,v,w,x,y,z\), stand for vectors
(elements of vector spaces), while lower-case letters near
the beginning of the alphabet (\(a,b,c,\) etc.) stand for scalars.
The authors do not seem to mention this explicitly.
- The book has a notation index ("List of Symbols").
In the hardcover edition this three-page index is
on the inside front cover, first page, and last page.