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Mirrors > Home > ILE Home > Th. List > cnegexlem3 | Unicode version |
Description: Existence of real number difference. Lemma for cnegex 7286. (Contributed by Eric Schmidt, 22-May-2007.) |
Ref | Expression |
---|---|
cnegexlem3 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | readdcl 7099 | . . . . . 6 | |
2 | ax-rnegex 7085 | . . . . . 6 | |
3 | 1, 2 | syl 14 | . . . . 5 |
4 | 3 | adantlr 460 | . . . 4 |
5 | 4 | adantr 270 | . . 3 |
6 | recn 7106 | . . . . . . . 8 | |
7 | recn 7106 | . . . . . . . 8 | |
8 | 6, 7 | anim12i 331 | . . . . . . 7 |
9 | 8 | anim1i 333 | . . . . . 6 |
10 | 9 | anim1i 333 | . . . . 5 |
11 | recn 7106 | . . . . 5 | |
12 | recn 7106 | . . . . . . . . . 10 | |
13 | add32 7267 | . . . . . . . . . . . 12 | |
14 | 13 | 3expa 1138 | . . . . . . . . . . 11 |
15 | addcl 7098 | . . . . . . . . . . . . 13 | |
16 | addcom 7245 | . . . . . . . . . . . . 13 | |
17 | 15, 16 | sylan 277 | . . . . . . . . . . . 12 |
18 | 17 | an32s 532 | . . . . . . . . . . 11 |
19 | 14, 18 | eqtr2d 2114 | . . . . . . . . . 10 |
20 | 12, 19 | sylanl2 395 | . . . . . . . . 9 |
21 | 20 | adantllr 464 | . . . . . . . 8 |
22 | 21 | adantlr 460 | . . . . . . 7 |
23 | addcom 7245 | . . . . . . . . . . . 12 | |
24 | 23 | ancoms 264 | . . . . . . . . . . 11 |
25 | 12, 24 | sylan2 280 | . . . . . . . . . 10 |
26 | id 19 | . . . . . . . . . 10 | |
27 | 25, 26 | sylan9eq 2133 | . . . . . . . . 9 |
28 | 27 | adantlll 463 | . . . . . . . 8 |
29 | 28 | adantr 270 | . . . . . . 7 |
30 | 22, 29 | eqeq12d 2095 | . . . . . 6 |
31 | simplr 496 | . . . . . . . 8 | |
32 | 15 | adantlr 460 | . . . . . . . . 9 |
33 | 32 | adantlr 460 | . . . . . . . 8 |
34 | simpllr 500 | . . . . . . . 8 | |
35 | cnegexlem1 7283 | . . . . . . . 8 | |
36 | 31, 33, 34, 35 | syl3anc 1169 | . . . . . . 7 |
37 | 36 | adantlr 460 | . . . . . 6 |
38 | 30, 37 | bitr3d 188 | . . . . 5 |
39 | 10, 11, 38 | syl2an 283 | . . . 4 |
40 | 39 | rexbidva 2365 | . . 3 |
41 | 5, 40 | mpbid 145 | . 2 |
42 | ax-rnegex 7085 | . . 3 | |
43 | 42 | adantl 271 | . 2 |
44 | 41, 43 | r19.29a 2498 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 102 wb 103 wceq 1284 wcel 1433 wrex 2349 (class class class)co 5532 cc 6979 cr 6980 cc0 6981 caddc 6984 |
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-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-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-resscn 7068 ax-1cn 7069 ax-icn 7071 ax-addcl 7072 ax-addrcl 7073 ax-mulcl 7074 ax-addcom 7076 ax-addass 7078 ax-i2m1 7081 ax-0id 7084 ax-rnegex 7085 |
This theorem depends on definitions: df-bi 115 df-3an 921 df-tru 1287 df-nf 1390 df-sb 1686 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ral 2353 df-rex 2354 df-v 2603 df-un 2977 df-in 2979 df-ss 2986 df-sn 3404 df-pr 3405 df-op 3407 df-uni 3602 df-br 3786 df-iota 4887 df-fv 4930 df-ov 5535 |
This theorem is referenced by: cnegex 7286 |
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