Move real-related materials out of iterateTheory
#1245
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binghe
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iterateTheoryiterateTheory
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Hi,
This PR intends to make the
iterateTheorya more fundamental theory without theorems about real numbers. The theory file is now moved tosrc/pred_set/src/more_theories, while the previous real-related materials ofiterateTheoryare moved into the existingreal_sigmaTheory. This introduced a small incompatibility which can be fixed by openingreal_sigmaTheoryin addition toiterateTheory.This changes paves the way for the abstract algebra materials to open
iterateTheoryfor doing ring arithmetics (sum), etc. without havingrealTheoryin ancestry, thus is important for some future work (on algebra materials).--Chun