MATH 200

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all of this text (and)

If you searched for "charles lutwidge dodgson logic" you search would really look like:

charles AND lutwidge AND dodgson AND logic

which would retrieve results that used all of those words somewhere in the title, abstract or body of the text.

any of this text (or)

The same search, "charles lutwidge dodgson logic" would look like:

charles OR lutwidge OR dodgson OR logic

and therefore would harvest a greater number of results, but results that are less likely to be about Charles Lutwidge Dodgon and logic.

none of this text (not)

This option works completely differenlty than the other two.  Any text you enter into this box will automatically be excluded from your results.  You could search something like this:

all of this text - charles lutwidge dodgson

none of this text - linear algebra

to find information about Dodgson's mathematics, but remove any results relating to linear algebra

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