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Mirrors > Home > ILE Home > Th. List > dffo3 | Unicode version |
Description: An onto mapping expressed in terms of function values. (Contributed by NM, 29-Oct-2006.) |
Ref | Expression |
---|---|
dffo3 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dffo2 5444 |
. 2
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2 | ffn 5367 |
. . . . 5
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3 | fnrnfv 5564 |
. . . . . 6
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4 | 3 | eqeq1d 2186 |
. . . . 5
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5 | 2, 4 | syl 14 |
. . . 4
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6 | dfbi2 388 |
. . . . . . 7
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7 | simpr 110 |
. . . . . . . . . . 11
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8 | ffvelcdm 5651 |
. . . . . . . . . . . 12
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9 | 8 | adantr 276 |
. . . . . . . . . . 11
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10 | 7, 9 | eqeltrd 2254 |
. . . . . . . . . 10
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11 | 10 | exp31 364 |
. . . . . . . . 9
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12 | 11 | rexlimdv 2593 |
. . . . . . . 8
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13 | 12 | biantrurd 305 |
. . . . . . 7
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14 | 6, 13 | bitr4id 199 |
. . . . . 6
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15 | 14 | albidv 1824 |
. . . . 5
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16 | abeq1 2287 |
. . . . 5
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17 | df-ral 2460 |
. . . . 5
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18 | 15, 16, 17 | 3bitr4g 223 |
. . . 4
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19 | 5, 18 | bitrd 188 |
. . 3
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20 | 19 | pm5.32i 454 |
. 2
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21 | 1, 20 | bitri 184 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-14 2151 ax-ext 2159 ax-sep 4123 ax-pow 4176 ax-pr 4211 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ral 2460 df-rex 2461 df-v 2741 df-sbc 2965 df-un 3135 df-in 3137 df-ss 3144 df-pw 3579 df-sn 3600 df-pr 3601 df-op 3603 df-uni 3812 df-br 4006 df-opab 4067 df-mpt 4068 df-id 4295 df-xp 4634 df-rel 4635 df-cnv 4636 df-co 4637 df-dm 4638 df-rn 4639 df-iota 5180 df-fun 5220 df-fn 5221 df-f 5222 df-fo 5224 df-fv 5226 |
This theorem is referenced by: dffo4 5666 foco2 5756 fcofo 5787 foov 6023 0ct 7108 ctmlemr 7109 ctm 7110 ctssdclemn0 7111 ctssdccl 7112 enumctlemm 7115 cnref1o 9652 1arith 12367 ctiunctlemfo 12442 ioocosf1o 14360 |
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