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Mirrors > Home > MPE Home > Th. List > ciin  Structured version Unicode version 
Description: Extend class notation to include indexed intersection. Note: Historically (prior to 21Oct2005), set.mm used the notation , with the same intersection symbol as cint 4042. Although that syntax was unambiguous, it did not allow for LALR parsing of the syntax constructions in set.mm. The new syntax uses a distinguished symbol instead of and does allow LALR parsing. Thanks to Peter Backes for suggesting this change. 
Ref  Expression 

vx  
cA  
cB 
Ref  Expression 

ciin 
Colors of variables: wff set class 
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