#### Mathematical English Usage - a Dictionary

##### by Jerzy Trzeciak

## mark

**1**

[*see also*: sign] The mark over an element denotes that it has been omitted.

**2**

[*see also*: indicate, label] The arrow marks the direction of the resulting flow.

The greatest element is marked with a dot.

In Figure 2, the set A is marked by a square with a small triangle
on top.

Number the successive segments of the boundary line between A and B
(marked thickly in the picture) with the numbers 0,1,...,n, starting at the bottom.

a marked difference [= obvious, noticeable]

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