#### Mathematical English Usage - a Dictionary

##### by Jerzy Trzeciak

## convention

We adhere to the convention that 0/0=0.

We adopt throughout the convention that compact spaces are Hausdorff.

We adopt the convention that the first coordinate i increases as one goes downwards,
and the second coordinate j increases as one goes from left to right.

We make the convention that f(Q)=i(Q).

We regard (1) as a mapping of S^{2} into S^{2}, with the obvious
conventions concerning the point ∞.

By convention, we set a(x,y)=0 if no such spaces exist.

This sort of tacit convention is used throughout Gelfand theory.

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