When to use system as countable-noun, and when to use system as uncountable-noun?

for Example: I wrote an article whose title is

"an XXX analysis for state prediction of process complex system (systems?)"

Another example, in the article, I wrote

"To predict the system state, XXX analysis is proposed to investigate the changing state of the system".

Is it correct thinking of the form of "system" or "systems"?

I am rather confused.

  • The "Dialogue Concerning the Two Chief World Systems"was a 1632 book by Galileo Galilei comparing the Copernican system with the traditional Ptolemaic system. – user114 May 25 '13 at 7:56

System is countable.


London has an extensive public transport system.

London and Paris both have extensive public transport systems.

It could it be that in the name of the first article, the indefinite article a was dropped due to style considerations, because this looks more correct:

the state prediction of a system

I cannot think of a sentence where system would be uncountable.

  • Is that mean I should use "a system" for singular noun and "systems" for plural noun? So the title "an XXX analysis for state prediction of process complex systems" is correct, and use 'system' is wrong. – mikemelon May 25 '13 at 13:17
  • Yes, exactly like you said. – Ilya Kogan May 25 '13 at 19:01

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