Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > uniintsn | Structured version Visualization version Unicode version |
Description: Two ways to express " is a singleton." See also en1 8023, en1b 8024, card1 8794, and eusn 4265. (Contributed by NM, 2-Aug-2010.) |
Ref | Expression |
---|---|
uniintsn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | vn0 3924 | . . . . . 6 | |
2 | inteq 4478 | . . . . . . . . . . 11 | |
3 | int0 4490 | . . . . . . . . . . 11 | |
4 | 2, 3 | syl6eq 2672 | . . . . . . . . . 10 |
5 | 4 | adantl 482 | . . . . . . . . 9 |
6 | unieq 4444 | . . . . . . . . . . . 12 | |
7 | uni0 4465 | . . . . . . . . . . . 12 | |
8 | 6, 7 | syl6eq 2672 | . . . . . . . . . . 11 |
9 | eqeq1 2626 | . . . . . . . . . . 11 | |
10 | 8, 9 | syl5ib 234 | . . . . . . . . . 10 |
11 | 10 | imp 445 | . . . . . . . . 9 |
12 | 5, 11 | eqtr3d 2658 | . . . . . . . 8 |
13 | 12 | ex 450 | . . . . . . 7 |
14 | 13 | necon3d 2815 | . . . . . 6 |
15 | 1, 14 | mpi 20 | . . . . 5 |
16 | n0 3931 | . . . . 5 | |
17 | 15, 16 | sylib 208 | . . . 4 |
18 | vex 3203 | . . . . . . 7 | |
19 | vex 3203 | . . . . . . 7 | |
20 | 18, 19 | prss 4351 | . . . . . 6 |
21 | uniss 4458 | . . . . . . . . . . . . 13 | |
22 | 21 | adantl 482 | . . . . . . . . . . . 12 |
23 | simpl 473 | . . . . . . . . . . . 12 | |
24 | 22, 23 | sseqtrd 3641 | . . . . . . . . . . 11 |
25 | intss 4498 | . . . . . . . . . . . 12 | |
26 | 25 | adantl 482 | . . . . . . . . . . 11 |
27 | 24, 26 | sstrd 3613 | . . . . . . . . . 10 |
28 | 18, 19 | unipr 4449 | . . . . . . . . . 10 |
29 | 18, 19 | intpr 4510 | . . . . . . . . . 10 |
30 | 27, 28, 29 | 3sstr3g 3645 | . . . . . . . . 9 |
31 | inss1 3833 | . . . . . . . . . 10 | |
32 | ssun1 3776 | . . . . . . . . . 10 | |
33 | 31, 32 | sstri 3612 | . . . . . . . . 9 |
34 | 30, 33 | jctir 561 | . . . . . . . 8 |
35 | eqss 3618 | . . . . . . . . 9 | |
36 | uneqin 3878 | . . . . . . . . 9 | |
37 | 35, 36 | bitr3i 266 | . . . . . . . 8 |
38 | 34, 37 | sylib 208 | . . . . . . 7 |
39 | 38 | ex 450 | . . . . . 6 |
40 | 20, 39 | syl5bi 232 | . . . . 5 |
41 | 40 | alrimivv 1856 | . . . 4 |
42 | 17, 41 | jca 554 | . . 3 |
43 | euabsn 4261 | . . . 4 | |
44 | eleq1 2689 | . . . . 5 | |
45 | 44 | eu4 2518 | . . . 4 |
46 | abid2 2745 | . . . . . 6 | |
47 | 46 | eqeq1i 2627 | . . . . 5 |
48 | 47 | exbii 1774 | . . . 4 |
49 | 43, 45, 48 | 3bitr3i 290 | . . 3 |
50 | 42, 49 | sylib 208 | . 2 |
51 | 18 | unisn 4451 | . . . 4 |
52 | unieq 4444 | . . . 4 | |
53 | inteq 4478 | . . . . 5 | |
54 | 18 | intsn 4513 | . . . . 5 |
55 | 53, 54 | syl6eq 2672 | . . . 4 |
56 | 51, 52, 55 | 3eqtr4a 2682 | . . 3 |
57 | 56 | exlimiv 1858 | . 2 |
58 | 50, 57 | impbii 199 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wa 384 wal 1481 wceq 1483 wex 1704 wcel 1990 weu 2470 cab 2608 wne 2794 cvv 3200 cun 3572 cin 3573 wss 3574 c0 3915 csn 4177 cpr 4179 cuni 4436 cint 4475 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-v 3202 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-sn 4178 df-pr 4180 df-uni 4437 df-int 4476 |
This theorem is referenced by: uniintab 4515 |
Copyright terms: Public domain | W3C validator |