After setting up Octopress for several weeks, I can finally begin to
write some math. The errors of FitzPatrick’s *Advanced Calculus* can
be found at Walla Walla University.

Two weeks ago, I found a mistake in the book that *wasn’t* in the
error list. In p. 430, ln. -3, the ‘<’ sign should actually be a ‘≤’,
since it’s *given* that
.

P.S. I need to escape the `\`

inside an inline equation so as to get
the norm displayed. A blog post contains a macro for the
norm. Another one claims that the code
surrounded with double dollar sign (i.e. `$$`

) will be interpreted as
an inline equation, but *not* a displayed one. For example,
`$$\sum_{i=1}^{n} i = n (n + 1) / 2$$`

will give you
.