DiscreteMath Sections DiscrMathExt Doc
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Def  1-1-Corr x:A,y:BR(x;y) == (x:A!y:BR(x;y)) & (y:B!x:AR(x;y))

is mentioned by

Thm*  R:(ABProp). 
Thm*  (1-1-Corr x:A,y:BR(x;y))
Thm*  
Thm*  (f:(AB), g:(BA).
Thm*  (InvFuns(A;B;f;g) & (x:Ay:BR(x;y y = f(x) & x = g(y)))
[one_one_corr_rel_vs_invfuns]

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DiscreteMath Sections DiscrMathExt Doc