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Mirrors > Home > ILE Home > Th. List > 1fv | Unicode version |
Description: A one value function. (Contributed by Alexander van der Vekens, 3-Dec-2017.) |
Ref | Expression |
---|---|
1fv |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0z 8362 |
. . . . . 6
![]() ![]() ![]() ![]() | |
2 | f1osng 5187 |
. . . . . 6
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3 | 1, 2 | mpan 414 |
. . . . 5
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4 | f1ofo 5153 |
. . . . . 6
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5 | dffo2 5130 |
. . . . . . 7
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6 | 5 | biimpi 118 |
. . . . . 6
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7 | fzsn 9084 |
. . . . . . . . . . . . 13
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8 | 1, 7 | ax-mp 7 |
. . . . . . . . . . . 12
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9 | 8 | eqcomi 2085 |
. . . . . . . . . . 11
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10 | 9 | feq2i 5060 |
. . . . . . . . . 10
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11 | 10 | biimpi 118 |
. . . . . . . . 9
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12 | snssi 3529 |
. . . . . . . . 9
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13 | fss 5074 |
. . . . . . . . 9
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14 | 11, 12, 13 | syl2an 283 |
. . . . . . . 8
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15 | 14 | ex 113 |
. . . . . . 7
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16 | 15 | adantr 270 |
. . . . . 6
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17 | 4, 6, 16 | 3syl 17 |
. . . . 5
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18 | 3, 17 | mpcom 36 |
. . . 4
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19 | fvsng 5380 |
. . . . 5
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
20 | 1, 19 | mpan 414 |
. . . 4
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21 | 18, 20 | jca 300 |
. . 3
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22 | 21 | adantr 270 |
. 2
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23 | feq1 5050 |
. . . 4
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24 | fveq1 5197 |
. . . . 5
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25 | 24 | eqeq1d 2089 |
. . . 4
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26 | 23, 25 | anbi12d 456 |
. . 3
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27 | 26 | adantl 271 |
. 2
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28 | 22, 27 | mpbird 165 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 576 ax-in2 577 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-13 1444 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-sep 3896 ax-pow 3948 ax-pr 3964 ax-un 4188 ax-setind 4280 ax-cnex 7067 ax-resscn 7068 ax-1re 7070 ax-addrcl 7073 ax-rnegex 7085 ax-pre-ltirr 7088 ax-pre-apti 7091 |
This theorem depends on definitions: df-bi 115 df-3or 920 df-3an 921 df-tru 1287 df-fal 1290 df-nf 1390 df-sb 1686 df-eu 1944 df-mo 1945 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ne 2246 df-nel 2340 df-ral 2353 df-rex 2354 df-rab 2357 df-v 2603 df-sbc 2816 df-dif 2975 df-un 2977 df-in 2979 df-ss 2986 df-pw 3384 df-sn 3404 df-pr 3405 df-op 3407 df-uni 3602 df-br 3786 df-opab 3840 df-mpt 3841 df-id 4048 df-xp 4369 df-rel 4370 df-cnv 4371 df-co 4372 df-dm 4373 df-rn 4374 df-res 4375 df-ima 4376 df-iota 4887 df-fun 4924 df-fn 4925 df-f 4926 df-f1 4927 df-fo 4928 df-f1o 4929 df-fv 4930 df-ov 5535 df-oprab 5536 df-mpt2 5537 df-pnf 7155 df-mnf 7156 df-xr 7157 df-ltxr 7158 df-le 7159 df-neg 7282 df-z 8352 df-uz 8620 df-fz 9030 |
This theorem is referenced by: (None) |
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