What is complexity?

Complexity is something not simple to explain...
Just from the etimology of the term we must expect something difficult to define and characterize. Infact, the original latin word complexus means “twisted, entwined, joined together” and suggests that we can define something as “complex” if it is made of closely connected parts, joined in such a way that it is difficult to separate them. Indeed no univocal mathematical definition can be given for this word but rather a series of concept that collocate the science of complexity in a vaste interdisciplinary area.

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