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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 5481 |
. 2
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2 | ffn 5404 |
. . . . 5
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3 | fnrnfv 5604 |
. . . . . 6
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4 | 3 | eqeq1d 2202 |
. . . . 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 5692 |
. . . . . . . . . . . 12
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9 | 8 | adantr 276 |
. . . . . . . . . . 11
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10 | 7, 9 | eqeltrd 2270 |
. . . . . . . . . 10
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11 | 10 | exp31 364 |
. . . . . . . . 9
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12 | 11 | rexlimdv 2610 |
. . . . . . . 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 1835 |
. . . . 5
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16 | abeq1 2303 |
. . . . 5
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17 | df-ral 2477 |
. . . . 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 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-14 2167 ax-ext 2175 ax-sep 4148 ax-pow 4204 ax-pr 4239 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ral 2477 df-rex 2478 df-v 2762 df-sbc 2987 df-un 3158 df-in 3160 df-ss 3167 df-pw 3604 df-sn 3625 df-pr 3626 df-op 3628 df-uni 3837 df-br 4031 df-opab 4092 df-mpt 4093 df-id 4325 df-xp 4666 df-rel 4667 df-cnv 4668 df-co 4669 df-dm 4670 df-rn 4671 df-iota 5216 df-fun 5257 df-fn 5258 df-f 5259 df-fo 5261 df-fv 5263 |
This theorem is referenced by: dffo4 5707 foco2 5797 fcofo 5828 foov 6067 0ct 7168 ctmlemr 7169 ctm 7170 ctssdclemn0 7171 ctssdccl 7172 enumctlemm 7175 cnref1o 9719 nninfctlemfo 12180 1arith 12508 ctiunctlemfo 12599 znf1o 14150 ioocosf1o 15030 |
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