Mathbox for Alan Sare 
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Mirrors > Home > MPE Home > Th. List > Mathboxes > biimpa21  Unicode version 
Description: biimpa 470 with commutation of the first and second conjuncts of the assertion. (Contributed by Alan Sare, 11Sep2016.) 
Ref  Expression 

biimpa21.1 
Ref  Expression 

biimpa21 
Step  Hyp  Ref  Expression 

1  biimpa21.1  . . 3  
2  1  biimpa 470  . 2 
3  2  ancoms 439  1 
Colors of variables: wff set class 
Syntax hints: wi 4 wb 176 wa 358 
This theorem is referenced by: 2sb5ndALT 28709 
This theorem was proved from axioms: ax1 5 ax2 6 ax3 7 axmp 8 
This theorem depends on definitions: dfbi 177 dfan 360 
Copyright terms: Public domain  W3C validator 