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Mirrors > Home > NFE Home > Th. List > fnfun | Unicode version |
Description: A function with domain is a function. (Contributed by set.mm contributors, 1-Aug-1994.) |
Ref | Expression |
---|---|
fnfun |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-fn 4790 | . 2 | |
2 | 1 | simplbi 446 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wceq 1642 cdm 4772 wfun 4775 wfn 4776 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-3 7 ax-mp 8 |
This theorem depends on definitions: df-bi 177 df-an 360 df-fn 4790 |
This theorem is referenced by: funfni 5183 fnco 5191 fnssresb 5195 ffun 5225 f1fun 5260 f1ofun 5289 fvelimab 5370 fvun1 5379 elpreima 5407 respreima 5410 fconst3 5457 enprmaplem3 6078 frecsuc 6322 |
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