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Mirrors > Home > MPE Home > Th. List > fococnv2 | Structured version Unicode version |
Description: The composition of an onto function and its converse. (Contributed by Stefan O'Rear, 12-Feb-2015.) |
Ref | Expression |
---|---|
fococnv2 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fofun 5728 |
. . 3
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2 | funcocnv2 5772 |
. . 3
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3 | 1, 2 | syl 16 |
. 2
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4 | forn 5730 |
. . 3
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5 | 4 | reseq2d 5217 |
. 2
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6 | 3, 5 | eqtrd 2495 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1592 ax-4 1603 ax-5 1671 ax-6 1710 ax-7 1730 ax-9 1762 ax-10 1777 ax-11 1782 ax-12 1794 ax-13 1955 ax-ext 2432 ax-sep 4520 ax-nul 4528 ax-pr 4638 |
This theorem depends on definitions: df-bi 185 df-or 370 df-an 371 df-3an 967 df-tru 1373 df-ex 1588 df-nf 1591 df-sb 1703 df-eu 2266 df-mo 2267 df-clab 2440 df-cleq 2446 df-clel 2449 df-nfc 2604 df-ne 2649 df-ral 2803 df-rex 2804 df-rab 2807 df-v 3078 df-dif 3438 df-un 3440 df-in 3442 df-ss 3449 df-nul 3745 df-if 3899 df-sn 3985 df-pr 3987 df-op 3991 df-br 4400 df-opab 4458 df-id 4743 df-xp 4953 df-rel 4954 df-cnv 4955 df-co 4956 df-dm 4957 df-rn 4958 df-res 4959 df-fun 5527 df-fn 5528 df-f 5529 df-fo 5531 |
This theorem is referenced by: f1ococnv2 5774 foeqcnvco 6106 |
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