A system of representation, usually formalistic.

Characterized by having a discrete side usually a discrete end.

The attributive (adjectival) use of "complex" is identical to its functional (nominal) use.
A complex usually has a discrete end but no discrete beginning. Quantum mechanics is an archetypal example of a complex system. Musical notations are an example of a complex system that has a discrete beginning but no discrete end.
via giphy
by sandrashine August 30, 2018
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