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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 5480 |
. 2
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2 | ffn 5403 |
. . . . 5
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3 | fnrnfv 5603 |
. . . . . 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 5691 |
. . . . . . . . . . . 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 4147 ax-pow 4203 ax-pr 4238 |
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 2986 df-un 3157 df-in 3159 df-ss 3166 df-pw 3603 df-sn 3624 df-pr 3625 df-op 3627 df-uni 3836 df-br 4030 df-opab 4091 df-mpt 4092 df-id 4324 df-xp 4665 df-rel 4666 df-cnv 4667 df-co 4668 df-dm 4669 df-rn 4670 df-iota 5215 df-fun 5256 df-fn 5257 df-f 5258 df-fo 5260 df-fv 5262 |
This theorem is referenced by: dffo4 5706 foco2 5796 fcofo 5827 foov 6065 0ct 7166 ctmlemr 7167 ctm 7168 ctssdclemn0 7169 ctssdccl 7170 enumctlemm 7173 cnref1o 9716 nninfctlemfo 12177 1arith 12505 ctiunctlemfo 12596 znf1o 14139 ioocosf1o 14989 |
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