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Mirrors > Home > MPE Home > Th. List > knatar | Structured version Visualization version Unicode version |
Description: The Knaster-Tarski theorem says that every monotone function over a complete lattice has a (least) fixpoint. Here we specialize this theorem to the case when the lattice is the powerset lattice . (Contributed by Mario Carneiro, 11-Jun-2015.) |
Ref | Expression |
---|---|
knatar.1 |
Ref | Expression |
---|---|
knatar |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | knatar.1 | . . 3 | |
2 | pwidg 4173 | . . . . 5 | |
3 | 2 | 3ad2ant1 1082 | . . . 4 |
4 | simp2 1062 | . . . 4 | |
5 | fveq2 6191 | . . . . . 6 | |
6 | id 22 | . . . . . 6 | |
7 | 5, 6 | sseq12d 3634 | . . . . 5 |
8 | 7 | intminss 4503 | . . . 4 |
9 | 3, 4, 8 | syl2anc 693 | . . 3 |
10 | 1, 9 | syl5eqss 3649 | . 2 |
11 | fveq2 6191 | . . . . . . . . . . . . . 14 | |
12 | id 22 | . . . . . . . . . . . . . 14 | |
13 | 11, 12 | sseq12d 3634 | . . . . . . . . . . . . 13 |
14 | 13 | intminss 4503 | . . . . . . . . . . . 12 |
15 | 14 | adantl 482 | . . . . . . . . . . 11 |
16 | 1, 15 | syl5eqss 3649 | . . . . . . . . . 10 |
17 | vex 3203 | . . . . . . . . . . 11 | |
18 | 17 | elpw2 4828 | . . . . . . . . . 10 |
19 | 16, 18 | sylibr 224 | . . . . . . . . 9 |
20 | simprl 794 | . . . . . . . . . 10 | |
21 | simpl3 1066 | . . . . . . . . . 10 | |
22 | pweq 4161 | . . . . . . . . . . . 12 | |
23 | fveq2 6191 | . . . . . . . . . . . . 13 | |
24 | 23 | sseq2d 3633 | . . . . . . . . . . . 12 |
25 | 22, 24 | raleqbidv 3152 | . . . . . . . . . . 11 |
26 | 25 | rspcv 3305 | . . . . . . . . . 10 |
27 | 20, 21, 26 | sylc 65 | . . . . . . . . 9 |
28 | fveq2 6191 | . . . . . . . . . . 11 | |
29 | 28 | sseq1d 3632 | . . . . . . . . . 10 |
30 | 29 | rspcv 3305 | . . . . . . . . 9 |
31 | 19, 27, 30 | sylc 65 | . . . . . . . 8 |
32 | simprr 796 | . . . . . . . 8 | |
33 | 31, 32 | sstrd 3613 | . . . . . . 7 |
34 | 33 | expr 643 | . . . . . 6 |
35 | 34 | ralrimiva 2966 | . . . . 5 |
36 | ssintrab 4500 | . . . . 5 | |
37 | 35, 36 | sylibr 224 | . . . 4 |
38 | 13 | cbvrabv 3199 | . . . . . 6 |
39 | 38 | inteqi 4479 | . . . . 5 |
40 | 1, 39 | eqtri 2644 | . . . 4 |
41 | 37, 40 | syl6sseqr 3652 | . . 3 |
42 | 3, 10 | sselpwd 4807 | . . . . . . . 8 |
43 | simp3 1063 | . . . . . . . . 9 | |
44 | pweq 4161 | . . . . . . . . . . 11 | |
45 | fveq2 6191 | . . . . . . . . . . . 12 | |
46 | 45 | sseq2d 3633 | . . . . . . . . . . 11 |
47 | 44, 46 | raleqbidv 3152 | . . . . . . . . . 10 |
48 | 47 | rspcv 3305 | . . . . . . . . 9 |
49 | 3, 43, 48 | sylc 65 | . . . . . . . 8 |
50 | 28 | sseq1d 3632 | . . . . . . . . 9 |
51 | 50 | rspcv 3305 | . . . . . . . 8 |
52 | 42, 49, 51 | sylc 65 | . . . . . . 7 |
53 | 52, 4 | sstrd 3613 | . . . . . 6 |
54 | fvex 6201 | . . . . . . 7 | |
55 | 54 | elpw 4164 | . . . . . 6 |
56 | 53, 55 | sylibr 224 | . . . . 5 |
57 | 54 | elpw 4164 | . . . . . . 7 |
58 | 41, 57 | sylibr 224 | . . . . . 6 |
59 | pweq 4161 | . . . . . . . . 9 | |
60 | fveq2 6191 | . . . . . . . . . 10 | |
61 | 60 | sseq2d 3633 | . . . . . . . . 9 |
62 | 59, 61 | raleqbidv 3152 | . . . . . . . 8 |
63 | 62 | rspcv 3305 | . . . . . . 7 |
64 | 42, 43, 63 | sylc 65 | . . . . . 6 |
65 | fveq2 6191 | . . . . . . . 8 | |
66 | 65 | sseq1d 3632 | . . . . . . 7 |
67 | 66 | rspcv 3305 | . . . . . 6 |
68 | 58, 64, 67 | sylc 65 | . . . . 5 |
69 | fveq2 6191 | . . . . . . 7 | |
70 | id 22 | . . . . . . 7 | |
71 | 69, 70 | sseq12d 3634 | . . . . . 6 |
72 | 71 | intminss 4503 | . . . . 5 |
73 | 56, 68, 72 | syl2anc 693 | . . . 4 |
74 | 40, 73 | syl5eqss 3649 | . . 3 |
75 | 41, 74 | eqssd 3620 | . 2 |
76 | 10, 75 | jca 554 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wa 384 w3a 1037 wceq 1483 wcel 1990 wral 2912 crab 2916 wss 3574 cpw 4158 cint 4475 cfv 5888 |
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 ax-sep 4781 ax-nul 4789 |
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-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-int 4476 df-br 4654 df-iota 5851 df-fv 5896 |
This theorem is referenced by: (None) |
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