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Mirrors > Home > ILE Home > Th. List > map1 | Unicode version |
Description: Set exponentiation: ordinal 1 to any set is equinumerous to ordinal 1. Exercise 4.42(b) of [Mendelson] p. 255. (Contributed by NM, 17-Dec-2003.) |
Ref | Expression |
---|---|
map1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fnmap 6517 | . . 3 | |
2 | 1oex 6289 | . . 3 | |
3 | elex 2671 | . . 3 | |
4 | fnovex 5772 | . . 3 | |
5 | 1, 2, 3, 4 | mp3an12i 1304 | . 2 |
6 | 2 | a1i 9 | . 2 |
7 | 0ex 4025 | . . 3 | |
8 | 7 | 2a1i 27 | . 2 |
9 | p0ex 4082 | . . . 4 | |
10 | xpexg 4623 | . . . 4 | |
11 | 9, 10 | mpan2 421 | . . 3 |
12 | 11 | a1d 22 | . 2 |
13 | el1o 6302 | . . . . 5 | |
14 | 13 | a1i 9 | . . . 4 |
15 | df1o2 6294 | . . . . . . . 8 | |
16 | 15 | oveq1i 5752 | . . . . . . 7 |
17 | 16 | eleq2i 2184 | . . . . . 6 |
18 | elmapg 6523 | . . . . . . 7 | |
19 | 9, 18 | mpan 420 | . . . . . 6 |
20 | 17, 19 | syl5bb 191 | . . . . 5 |
21 | 7 | fconst2 5605 | . . . . 5 |
22 | 20, 21 | syl6rbb 196 | . . . 4 |
23 | 14, 22 | anbi12d 464 | . . 3 |
24 | ancom 264 | . . 3 | |
25 | 23, 24 | syl6rbb 196 | . 2 |
26 | 5, 6, 8, 12, 25 | en2d 6630 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wb 104 wceq 1316 wcel 1465 cvv 2660 c0 3333 csn 3497 class class class wbr 3899 cxp 4507 wfn 5088 wf 5089 (class class class)co 5742 c1o 6274 cmap 6510 cen 6600 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 588 ax-in2 589 ax-io 683 ax-5 1408 ax-7 1409 ax-gen 1410 ax-ie1 1454 ax-ie2 1455 ax-8 1467 ax-10 1468 ax-11 1469 ax-i12 1470 ax-bndl 1471 ax-4 1472 ax-13 1476 ax-14 1477 ax-17 1491 ax-i9 1495 ax-ial 1499 ax-i5r 1500 ax-ext 2099 ax-sep 4016 ax-nul 4024 ax-pow 4068 ax-pr 4101 ax-un 4325 ax-setind 4422 |
This theorem depends on definitions: df-bi 116 df-3an 949 df-tru 1319 df-fal 1322 df-nf 1422 df-sb 1721 df-eu 1980 df-mo 1981 df-clab 2104 df-cleq 2110 df-clel 2113 df-nfc 2247 df-ne 2286 df-ral 2398 df-rex 2399 df-rab 2402 df-v 2662 df-sbc 2883 df-csb 2976 df-dif 3043 df-un 3045 df-in 3047 df-ss 3054 df-nul 3334 df-pw 3482 df-sn 3503 df-pr 3504 df-op 3506 df-uni 3707 df-iun 3785 df-br 3900 df-opab 3960 df-mpt 3961 df-tr 3997 df-id 4185 df-iord 4258 df-on 4260 df-suc 4263 df-xp 4515 df-rel 4516 df-cnv 4517 df-co 4518 df-dm 4519 df-rn 4520 df-res 4521 df-ima 4522 df-iota 5058 df-fun 5095 df-fn 5096 df-f 5097 df-f1 5098 df-fo 5099 df-f1o 5100 df-fv 5101 df-ov 5745 df-oprab 5746 df-mpo 5747 df-1st 6006 df-2nd 6007 df-1o 6281 df-map 6512 df-en 6603 |
This theorem is referenced by: (None) |
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