Mathematical English Usage - a Dictionary

by Jerzy Trzeciak


[see also: when, whenever, whether, provided

The map F is said to be proper if G is dense. [ Note: no comma before if here.]

By deleting the intervals containing x, if any, we obtain......

There are few, if any, other significant classes of processes for which such precise information is available.

We can assume, by decreasing n if necessary, that......

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