Terms are defined throughout 
this document, indicated by 
italic type. Terms explicitly defined 
in this document are not to be presumed to refer implicitly to similar 
terms defined elsewhere. Mathematical terms not defined in this document 
are to be interpreted according to the 
CRC Concise Encyclopedia of 
Mathematics, Second Edition. Other terms not defined in this document 
are to be interpreted according to the 
Webster's Third New International 
Dictionary of the English Language. Informal descriptions of some 
terms are also given below.