Note that most of the material is concerned with research-level and university mathematics.
Each ``phrase'' should be an (unordered) set of one or more words which you would hope to see occurring together in the same sentence in documents returned by the search. Words you would like to see in the same document but not necessarily in the same sentence should be put in different phrases. It is important that words be spelt correctly.
Words are reduced to a stem by removal of common suffices before searching is performed, so in general you need not worry about singular versus plural and other grammatical distinctions. Overly frequent words and stems are ignored. The search is not case-sensitive.
For each document matched, the following are reported:
There is a partial description of how the index information was collected.
Caution: documents on the web are not in general reviewed for correctness or applicability, nor does the MathSearch database screen individual pages.