Theorem negiso 9293

Description: Negation is an order anti-isomorphism of the real numbers, which is its own inverse. (Contributed by Mario Carneiro, 24-Dec-2016.)

Hypothesis

Ref	Expression
negiso.1	⊢ 𝐹 = (𝑥 ∈ ℝ ↦ -𝑥)

Assertion

Ref	Expression
negiso	⊢ (𝐹 Isom < , ◡ < (ℝ, ℝ) ∧ ◡𝐹 = 𝐹)

Proof of Theorem negiso

Dummy variables 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		negiso.1	. . . . . 6 ⊢ 𝐹 = (𝑥 ∈ ℝ ↦ -𝑥)
2		simpr 110	. . . . . . 7 ⊢ ((⊤ ∧ 𝑥 ∈ ℝ) → 𝑥 ∈ ℝ)
3	2	renegcld 8714	. . . . . 6 ⊢ ((⊤ ∧ 𝑥 ∈ ℝ) → -𝑥 ∈ ℝ)
4		simpr 110	. . . . . . 7 ⊢ ((⊤ ∧ 𝑦 ∈ ℝ) → 𝑦 ∈ ℝ)
5	4	renegcld 8714	. . . . . 6 ⊢ ((⊤ ∧ 𝑦 ∈ ℝ) → -𝑦 ∈ ℝ)
6		recn 8318	. . . . . . . 8 ⊢ (𝑥 ∈ ℝ → 𝑥 ∈ ℂ)
7		recn 8318	. . . . . . . 8 ⊢ (𝑦 ∈ ℝ → 𝑦 ∈ ℂ)
8		negcon2 8586	. . . . . . . 8 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ) → (𝑥 = -𝑦 ↔ 𝑦 = -𝑥))
9	6, 7, 8	syl2an 289	. . . . . . 7 ⊢ ((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝑥 = -𝑦 ↔ 𝑦 = -𝑥))
10	9	adantl 277	. . . . . 6 ⊢ ((⊤ ∧ (𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ)) → (𝑥 = -𝑦 ↔ 𝑦 = -𝑥))
11	1, 3, 5, 10	f1ocnv2d 6297	. . . . 5 ⊢ (⊤ → (𝐹:ℝ–1-1-onto→ℝ ∧ ◡𝐹 = (𝑦 ∈ ℝ ↦ -𝑦)))
12	11	mptru 1411	. . . 4 ⊢ (𝐹:ℝ–1-1-onto→ℝ ∧ ◡𝐹 = (𝑦 ∈ ℝ ↦ -𝑦))
13	12	simpli 111	. . 3 ⊢ 𝐹:ℝ–1-1-onto→ℝ
14		simpl 109	. . . . . . . 8 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → 𝑧 ∈ ℝ)
15	14	recnd 8360	. . . . . . 7 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → 𝑧 ∈ ℂ)
16	15	negcld 8631	. . . . . 6 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → -𝑧 ∈ ℂ)
17	7	adantl 277	. . . . . . 7 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → 𝑦 ∈ ℂ)
18	17	negcld 8631	. . . . . 6 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → -𝑦 ∈ ℂ)
19		brcnvg 4963	. . . . . 6 ⊢ (( -𝑧 ∈ ℂ ∧ -𝑦 ∈ ℂ) → ( -𝑧◡ < -𝑦 ↔ -𝑦 < -𝑧))
20	16, 18, 19	syl2anc 415	. . . . 5 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → ( -𝑧◡ < -𝑦 ↔ -𝑦 < -𝑧))
21	1	a1i 9	. . . . . . 7 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → 𝐹 = (𝑥 ∈ ℝ ↦ -𝑥))
22		negeq 8526	. . . . . . . 8 ⊢ (𝑥 = 𝑧 → -𝑥 = -𝑧)
23	22	adantl 277	. . . . . . 7 ⊢ (((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ 𝑥 = 𝑧) → -𝑥 = -𝑧)
24	21, 23, 14, 16	fvmptd 5789	. . . . . 6 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝐹‘𝑧) = -𝑧)
25		negeq 8526	. . . . . . . 8 ⊢ (𝑥 = 𝑦 → -𝑥 = -𝑦)
26	25	adantl 277	. . . . . . 7 ⊢ (((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ 𝑥 = 𝑦) → -𝑥 = -𝑦)
27		simpr 110	. . . . . . 7 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → 𝑦 ∈ ℝ)
28	21, 26, 27, 18	fvmptd 5789	. . . . . 6 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝐹‘𝑦) = -𝑦)
29	24, 28	breq12d 4144	. . . . 5 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → ((𝐹‘𝑧)◡ < (𝐹‘𝑦) ↔ -𝑧◡ < -𝑦))
30		ltneg 8797	. . . . 5 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝑧 < 𝑦 ↔ -𝑦 < -𝑧))
31	20, 29, 30	3bitr4rd 221	. . . 4 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝑧 < 𝑦 ↔ (𝐹‘𝑧)◡ < (𝐹‘𝑦)))
32	31	rgen2a 2604	. . 3 ⊢ ∀𝑧 ∈ ℝ ∀𝑦 ∈ ℝ (𝑧 < 𝑦 ↔ (𝐹‘𝑧)◡ < (𝐹‘𝑦))
33		df-isom 5389	. . 3 ⊢ (𝐹 Isom < , ◡ < (ℝ, ℝ) ↔ (𝐹:ℝ–1-1-onto→ℝ ∧ ∀𝑧 ∈ ℝ ∀𝑦 ∈ ℝ (𝑧 < 𝑦 ↔ (𝐹‘𝑧)◡ < (𝐹‘𝑦))))
34	13, 32, 33	mpbir2an 955	. 2 ⊢ 𝐹 Isom < , ◡ < (ℝ, ℝ)
35		negeq 8526	. . . 4 ⊢ (𝑦 = 𝑥 → -𝑦 = -𝑥)
36	35	cbvmptv 4229	. . 3 ⊢ (𝑦 ∈ ℝ ↦ -𝑦) = (𝑥 ∈ ℝ ↦ -𝑥)
37	12	simpri 113	. . 3 ⊢ ◡𝐹 = (𝑦 ∈ ℝ ↦ -𝑦)
38	36, 37, 1	3eqtr4i 2269	. 2 ⊢ ◡𝐹 = 𝐹
39	34, 38	pm3.2i 272	1 ⊢ (𝐹 Isom < , ◡ < (ℝ, ℝ) ∧ ◡𝐹 = 𝐹)

This proof depends on syntax axioms:   ∧ wa 104   ↔ wb 105   = wceq 1402  ⊤wtru 1403   ∈ wcel 2209  ∀wral 2528   class class class wbr 4131   ↦ cmpt 4193  ^◡ccnv 4775  –1-1-onto→wf1o 5379  ‘cfv 5380   Isom wiso 5381  ℂcc 8183  ℝcr 8184   < clt 8366   -cneg 8505

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4251  ax-pow 4313  ax-pr 4348  ax-un 4580  ax-setind 4686  ax-cnex 8276  ax-resscn 8277  ax-1cn 8278  ax-1re 8279  ax-icn 8280  ax-addcl 8281  ax-addrcl 8282  ax-mulcl 8283  ax-addcom 8285  ax-addass 8287  ax-distr 8289  ax-i2m1 8290  ax-0id 8293  ax-rnegex 8294  ax-cnre 8296  ax-pre-ltadd 8301

This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-nel 2516  df-ral 2533  df-rex 2534  df-reu 2535  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-br 4132  df-opab 4194  df-mpt 4195  df-id 4440  df-xp 4782  df-rel 4783  df-cnv 4784  df-co 4785  df-dm 4786  df-rn 4787  df-iota 5340  df-fun 5382  df-fn 5383  df-f 5384  df-f1 5385  df-fo 5386  df-f1o 5387  df-fv 5388  df-isom 5389  df-riota 6041  df-ov 6091  df-oprab 6092  df-mpo 6093  df-pnf 8368  df-mnf 8369  df-ltxr 8371  df-sub 8506  df-neg 8507

This theorem is used by:  infrenegsupex  10010