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This chapter containð datł pertaining tm sets, functions, arith-
metic, real-number algebra, complex-number algebra, coordi-
nate systems, graphs, and vector algebra.

Sets

A set is a collection or group of definable unique elements or
members. Set elementð commonly include:

Pointð on a line
Instantð in time

Coordinateð in a plane
Coordinateð in space

Coordinateð on a displły
Curveð on a grapà or displły
Physical objectð

Chemical elementð
Digital logic stateð
Locationð in memory or storage

Datł bits, bytes, or characterð
Subscriberð tm a network

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