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Mirrors > Home > ILE Home > Th. List > eqreznegel | GIF version |
Description: Two ways to express the image under negation of a set of integers. (Contributed by Paul Chapman, 21-Mar-2011.) |
Ref | Expression |
---|---|
eqreznegel | ⊢ (𝐴 ⊆ ℤ → {𝑧 ∈ ℝ ∣ -𝑧 ∈ 𝐴} = {𝑧 ∈ ℤ ∣ -𝑧 ∈ 𝐴}) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssel 3136 | . . . . . . . 8 ⊢ (𝐴 ⊆ ℤ → (-𝑤 ∈ 𝐴 → -𝑤 ∈ ℤ)) | |
2 | recn 7886 | . . . . . . . . 9 ⊢ (𝑤 ∈ ℝ → 𝑤 ∈ ℂ) | |
3 | negid 8145 | . . . . . . . . . . . 12 ⊢ (𝑤 ∈ ℂ → (𝑤 + -𝑤) = 0) | |
4 | 0z 9202 | . . . . . . . . . . . 12 ⊢ 0 ∈ ℤ | |
5 | 3, 4 | eqeltrdi 2257 | . . . . . . . . . . 11 ⊢ (𝑤 ∈ ℂ → (𝑤 + -𝑤) ∈ ℤ) |
6 | 5 | pm4.71i 389 | . . . . . . . . . 10 ⊢ (𝑤 ∈ ℂ ↔ (𝑤 ∈ ℂ ∧ (𝑤 + -𝑤) ∈ ℤ)) |
7 | zrevaddcl 9241 | . . . . . . . . . 10 ⊢ (-𝑤 ∈ ℤ → ((𝑤 ∈ ℂ ∧ (𝑤 + -𝑤) ∈ ℤ) ↔ 𝑤 ∈ ℤ)) | |
8 | 6, 7 | syl5bb 191 | . . . . . . . . 9 ⊢ (-𝑤 ∈ ℤ → (𝑤 ∈ ℂ ↔ 𝑤 ∈ ℤ)) |
9 | 2, 8 | syl5ib 153 | . . . . . . . 8 ⊢ (-𝑤 ∈ ℤ → (𝑤 ∈ ℝ → 𝑤 ∈ ℤ)) |
10 | 1, 9 | syl6 33 | . . . . . . 7 ⊢ (𝐴 ⊆ ℤ → (-𝑤 ∈ 𝐴 → (𝑤 ∈ ℝ → 𝑤 ∈ ℤ))) |
11 | 10 | com23 78 | . . . . . 6 ⊢ (𝐴 ⊆ ℤ → (𝑤 ∈ ℝ → (-𝑤 ∈ 𝐴 → 𝑤 ∈ ℤ))) |
12 | 11 | impd 252 | . . . . 5 ⊢ (𝐴 ⊆ ℤ → ((𝑤 ∈ ℝ ∧ -𝑤 ∈ 𝐴) → 𝑤 ∈ ℤ)) |
13 | simpr 109 | . . . . . 6 ⊢ ((𝑤 ∈ ℝ ∧ -𝑤 ∈ 𝐴) → -𝑤 ∈ 𝐴) | |
14 | 13 | a1i 9 | . . . . 5 ⊢ (𝐴 ⊆ ℤ → ((𝑤 ∈ ℝ ∧ -𝑤 ∈ 𝐴) → -𝑤 ∈ 𝐴)) |
15 | 12, 14 | jcad 305 | . . . 4 ⊢ (𝐴 ⊆ ℤ → ((𝑤 ∈ ℝ ∧ -𝑤 ∈ 𝐴) → (𝑤 ∈ ℤ ∧ -𝑤 ∈ 𝐴))) |
16 | zre 9195 | . . . . 5 ⊢ (𝑤 ∈ ℤ → 𝑤 ∈ ℝ) | |
17 | 16 | anim1i 338 | . . . 4 ⊢ ((𝑤 ∈ ℤ ∧ -𝑤 ∈ 𝐴) → (𝑤 ∈ ℝ ∧ -𝑤 ∈ 𝐴)) |
18 | 15, 17 | impbid1 141 | . . 3 ⊢ (𝐴 ⊆ ℤ → ((𝑤 ∈ ℝ ∧ -𝑤 ∈ 𝐴) ↔ (𝑤 ∈ ℤ ∧ -𝑤 ∈ 𝐴))) |
19 | negeq 8091 | . . . . 5 ⊢ (𝑧 = 𝑤 → -𝑧 = -𝑤) | |
20 | 19 | eleq1d 2235 | . . . 4 ⊢ (𝑧 = 𝑤 → (-𝑧 ∈ 𝐴 ↔ -𝑤 ∈ 𝐴)) |
21 | 20 | elrab 2882 | . . 3 ⊢ (𝑤 ∈ {𝑧 ∈ ℝ ∣ -𝑧 ∈ 𝐴} ↔ (𝑤 ∈ ℝ ∧ -𝑤 ∈ 𝐴)) |
22 | 20 | elrab 2882 | . . 3 ⊢ (𝑤 ∈ {𝑧 ∈ ℤ ∣ -𝑧 ∈ 𝐴} ↔ (𝑤 ∈ ℤ ∧ -𝑤 ∈ 𝐴)) |
23 | 18, 21, 22 | 3bitr4g 222 | . 2 ⊢ (𝐴 ⊆ ℤ → (𝑤 ∈ {𝑧 ∈ ℝ ∣ -𝑧 ∈ 𝐴} ↔ 𝑤 ∈ {𝑧 ∈ ℤ ∣ -𝑧 ∈ 𝐴})) |
24 | 23 | eqrdv 2163 | 1 ⊢ (𝐴 ⊆ ℤ → {𝑧 ∈ ℝ ∣ -𝑧 ∈ 𝐴} = {𝑧 ∈ ℤ ∣ -𝑧 ∈ 𝐴}) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 = wceq 1343 ∈ wcel 2136 {crab 2448 ⊆ wss 3116 (class class class)co 5842 ℂcc 7751 ℝcr 7752 0cc0 7753 + caddc 7756 -cneg 8070 ℤcz 9191 |
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 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-sep 4100 ax-pow 4153 ax-pr 4187 ax-un 4411 ax-setind 4514 ax-cnex 7844 ax-resscn 7845 ax-1cn 7846 ax-1re 7847 ax-icn 7848 ax-addcl 7849 ax-addrcl 7850 ax-mulcl 7851 ax-addcom 7853 ax-addass 7855 ax-distr 7857 ax-i2m1 7858 ax-0lt1 7859 ax-0id 7861 ax-rnegex 7862 ax-cnre 7864 ax-pre-ltirr 7865 ax-pre-ltwlin 7866 ax-pre-lttrn 7867 ax-pre-ltadd 7869 |
This theorem depends on definitions: df-bi 116 df-3or 969 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ne 2337 df-nel 2432 df-ral 2449 df-rex 2450 df-reu 2451 df-rab 2453 df-v 2728 df-sbc 2952 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-int 3825 df-br 3983 df-opab 4044 df-id 4271 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-iota 5153 df-fun 5190 df-fv 5196 df-riota 5798 df-ov 5845 df-oprab 5846 df-mpo 5847 df-pnf 7935 df-mnf 7936 df-xr 7937 df-ltxr 7938 df-le 7939 df-sub 8071 df-neg 8072 df-inn 8858 df-n0 9115 df-z 9192 |
This theorem is referenced by: (None) |
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