ClDo _ IIIIIIIoaIIIics bu _ die 'EI JDDi, sij'_ . . . . -. . . _. je
_ . . . . . lIbupalaJllllllllll __ D'y_poa: wbae it beIoap. . . . die
. . ." . ., . . _ DOD to dlecluly __ __ . 1110 _ is dioapaI; -. .
e _ may be EricT. BeD IbIetodo--'_iL O. 1feaoriIide Mathematics is a
tool for dloogIrt. A bighly necessary tool in a world where both
feedback and noolineari ties abound. Similarly, all kinds of parts of
IIIIIIhcmatiI: s serve as tools for odIcr parts and for ocher sci eoccs.
Applying a simple rewriting rule to the quote on the right above one
finds suc: h stalements as: 'One ser vice topology has rcncIerM
mathematical physics . . . '; 'One service logic has rendered computer
science . . '; 'One service category theory has rmdcn: d mathematics . .
. '. All arguably true. And all statements obrainable this way form part
of the raison d'etm of this series. This series, Mathmlatics tDIII Its
Applications, saaned in 1977. Now that over one hundred volumcs have
appeared it seems opportune to reexamine its scope. AI. the time I wrote
"Growing spccialization and divenification have brought a host of
monographs and textbooks on incJeasingly specialized topics. However,
the 'tree' of knowledge of JJJatbcmatics and reIatcd ficIds docs not
grow only by putting forth new bnDdIcs. It also happens, quite often in
fact, that brancbes which were thought to be comp1etcly disparate am
suddenly seen to be rdatcd."