This iBook comes in fixed-format ePub, which conforms to Apple's
standard for iBooks but still looks exactly like the original PDF.
This ensures perfect layout as originally designed – quite unlike
the 'reflowable' maths books in the iBook store offered by the main
publishers.
The cross-references in the text are active links: when a proof
cites Lemma 3.1, for example, tap on the "3.1" to be taken to that
lemma. For each result or proof, there are links in the margin to
take you to the results needed for this proof, or in whose proof the
current result is used. These links work best if magnified a little
before tapping.
Unlike the other eBook editions (including Professional), the iBooks
have a linked index and are not printable.
The price for all eBook formats is the same: iBook, Adobe eBook, and
iOS app.
