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Mirrors > Home > NFE Home > Th. List > eqncg | Unicode version |
Description: Equality of cardinalities. (Contributed by SF, 24-Feb-2015.) |
Ref | Expression |
---|---|
eqncg | Nc Nc |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ncidg 6122 | . . . . . . 7 Nc | |
2 | 1 | adantr 451 | . . . . . 6 Nc Nc Nc |
3 | eleq2 2414 | . . . . . . 7 Nc Nc Nc Nc | |
4 | 3 | adantl 452 | . . . . . 6 Nc Nc Nc Nc |
5 | 2, 4 | mpbid 201 | . . . . 5 Nc Nc Nc |
6 | df-nc 6101 | . . . . 5 Nc | |
7 | 5, 6 | syl6eleq 2443 | . . . 4 Nc Nc |
8 | ecexr 5950 | . . . 4 | |
9 | 7, 8 | syl 15 | . . 3 Nc Nc |
10 | 9 | ex 423 | . 2 Nc Nc |
11 | brex 4689 | . . . 4 | |
12 | 11 | simprd 449 | . . 3 |
13 | 12 | a1i 10 | . 2 |
14 | ener 6039 | . . . . . 6 Er | |
15 | 14 | a1i 10 | . . . . 5 Er |
16 | dmen 6041 | . . . . . 6 | |
17 | 16 | a1i 10 | . . . . 5 |
18 | elex 2867 | . . . . . 6 | |
19 | 18 | adantr 451 | . . . . 5 |
20 | simpr 447 | . . . . 5 | |
21 | 15, 17, 19, 20 | erth 5968 | . . . 4 |
22 | df-nc 6101 | . . . . 5 Nc | |
23 | 22, 6 | eqeq12i 2366 | . . . 4 Nc Nc |
24 | 21, 23 | syl6rbbr 255 | . . 3 Nc Nc |
25 | 24 | ex 423 | . 2 Nc Nc |
26 | 10, 13, 25 | pm5.21ndd 343 | 1 Nc Nc |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 176 wa 358 wceq 1642 wcel 1710 cvv 2859 class class class wbr 4639 cdm 4772 Er cer 5898 cec 5945 cen 6028 Nc cnc 6091 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1546 ax-5 1557 ax-17 1616 ax-9 1654 ax-8 1675 ax-13 1712 ax-14 1714 ax-6 1729 ax-7 1734 ax-11 1746 ax-12 1925 ax-ext 2334 ax-nin 4078 ax-xp 4079 ax-cnv 4080 ax-1c 4081 ax-sset 4082 ax-si 4083 ax-ins2 4084 ax-ins3 4085 ax-typlower 4086 ax-sn 4087 |
This theorem depends on definitions: df-bi 177 df-or 359 df-an 360 df-3or 935 df-3an 936 df-nan 1288 df-tru 1319 df-ex 1542 df-nf 1545 df-sb 1649 df-eu 2208 df-mo 2209 df-clab 2340 df-cleq 2346 df-clel 2349 df-nfc 2478 df-ne 2518 df-ral 2619 df-rex 2620 df-reu 2621 df-rmo 2622 df-rab 2623 df-v 2861 df-sbc 3047 df-nin 3211 df-compl 3212 df-in 3213 df-un 3214 df-dif 3215 df-symdif 3216 df-ss 3259 df-pss 3261 df-nul 3551 df-if 3663 df-pw 3724 df-sn 3741 df-pr 3742 df-uni 3892 df-int 3927 df-opk 4058 df-1c 4136 df-pw1 4137 df-uni1 4138 df-xpk 4185 df-cnvk 4186 df-ins2k 4187 df-ins3k 4188 df-imak 4189 df-cok 4190 df-p6 4191 df-sik 4192 df-ssetk 4193 df-imagek 4194 df-idk 4195 df-iota 4339 df-0c 4377 df-addc 4378 df-nnc 4379 df-fin 4380 df-lefin 4440 df-ltfin 4441 df-ncfin 4442 df-tfin 4443 df-evenfin 4444 df-oddfin 4445 df-sfin 4446 df-spfin 4447 df-phi 4565 df-op 4566 df-proj1 4567 df-proj2 4568 df-opab 4623 df-br 4640 df-1st 4723 df-swap 4724 df-sset 4725 df-co 4726 df-ima 4727 df-si 4728 df-id 4767 df-xp 4784 df-cnv 4785 df-rn 4786 df-dm 4787 df-res 4788 df-fun 4789 df-fn 4790 df-f 4791 df-f1 4792 df-fo 4793 df-f1o 4794 df-2nd 4797 df-txp 5736 df-ins2 5750 df-ins3 5752 df-image 5754 df-ins4 5756 df-si3 5758 df-funs 5760 df-fns 5762 df-trans 5899 df-sym 5908 df-er 5909 df-ec 5947 df-en 6029 df-nc 6101 |
This theorem is referenced by: eqnc 6127 ncpw1pwneg 6201 canncb 6332 |
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