This wonderful volume is one of four works I always keep in digital or desk drawer reach while reading/studying/ referencing any other math book or journal article, the complete list being:<br><br>--&nbsp;
  
Encyclopedia Of Mathematics (Science Encyclopedia)







  
  
    <br><br>--&nbsp;
  
The Princeton Companion to Mathematics







  
  
    <br><br>--&nbsp;
  
Handbook of Mathematical Functions: with Formulas, Graphs, and Mathematical Tables (Dover Books on Mathematics)







  
  
    <br><br>--&nbsp;
  
NIST Handbook of Mathematical Functions







  
  
    &nbsp;(Being of course the 2010 update of the Abramowitz classic above).<br><br>Given these four, there is hardly a topic from among the current 495 math fields of study that isn't at least explained in enough detail to save LOTS of time on link expeditions. At minimum, these give head starts on alphabetized keywords that will quickly fill holes in any research project, class, or syllabus.