Theorem negiso 9134

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 8558	. . . . . 6 ⊢ ((⊤ ∧ 𝑥 ∈ ℝ) → -𝑥 ∈ ℝ)
4		simpr 110	. . . . . . 7 ⊢ ((⊤ ∧ 𝑦 ∈ ℝ) → 𝑦 ∈ ℝ)
5	4	renegcld 8558	. . . . . 6 ⊢ ((⊤ ∧ 𝑦 ∈ ℝ) → -𝑦 ∈ ℝ)
6		recn 8164	. . . . . . . 8 ⊢ (𝑥 ∈ ℝ → 𝑥 ∈ ℂ)
7		recn 8164	. . . . . . . 8 ⊢ (𝑦 ∈ ℝ → 𝑦 ∈ ℂ)
8		negcon2 8431	. . . . . . . 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 6226	. . . . 5 ⊢ (⊤ → (𝐹:ℝ–1-1-onto→ℝ ∧ ◡𝐹 = (𝑦 ∈ ℝ ↦ -𝑦)))
12	11	mptru 1406	. . . 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 8207	. . . . . . 7 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → 𝑧 ∈ ℂ)
16	15	negcld 8476	. . . . . 6 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → -𝑧 ∈ ℂ)
17	7	adantl 277	. . . . . . 7 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → 𝑦 ∈ ℂ)
18	17	negcld 8476	. . . . . 6 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → -𝑦 ∈ ℂ)
19		brcnvg 4911	. . . . . 6 ⊢ ((-𝑧 ∈ ℂ ∧ -𝑦 ∈ ℂ) → (-𝑧◡ < -𝑦 ↔ -𝑦 < -𝑧))
20	16, 18, 19	syl2anc 411	. . . . 5 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (-𝑧◡ < -𝑦 ↔ -𝑦 < -𝑧))
21	1	a1i 9	. . . . . . 7 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → 𝐹 = (𝑥 ∈ ℝ ↦ -𝑥))
22		negeq 8371	. . . . . . . 8 ⊢ (𝑥 = 𝑧 → -𝑥 = -𝑧)
23	22	adantl 277	. . . . . . 7 ⊢ (((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ 𝑥 = 𝑧) → -𝑥 = -𝑧)
24	21, 23, 14, 16	fvmptd 5727	. . . . . 6 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝐹‘𝑧) = -𝑧)
25		negeq 8371	. . . . . . . 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 5727	. . . . . 6 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝐹‘𝑦) = -𝑦)
29	24, 28	breq12d 4101	. . . . 5 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → ((𝐹‘𝑧)◡ < (𝐹‘𝑦) ↔ -𝑧◡ < -𝑦))
30		ltneg 8641	. . . . 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 2586	. . 3 ⊢ ∀𝑧 ∈ ℝ ∀𝑦 ∈ ℝ (𝑧 < 𝑦 ↔ (𝐹‘𝑧)◡ < (𝐹‘𝑦))
33		df-isom 5335	. . 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 950	. 2 ⊢ 𝐹 Isom < , ◡ < (ℝ, ℝ)
35		negeq 8371	. . . 4 ⊢ (𝑦 = 𝑥 → -𝑦 = -𝑥)
36	35	cbvmptv 4185	. . 3 ⊢ (𝑦 ∈ ℝ ↦ -𝑦) = (𝑥 ∈ ℝ ↦ -𝑥)
37	12	simpri 113	. . 3 ⊢ ◡𝐹 = (𝑦 ∈ ℝ ↦ -𝑦)
38	36, 37, 1	3eqtr4i 2262	. 2 ⊢ ◡𝐹 = 𝐹
39	34, 38	pm3.2i 272	1 ⊢ (𝐹 Isom < , ◡ < (ℝ, ℝ) ∧ ◡𝐹 = 𝐹)

Syntax hints:   ∧ wa 104   ↔ wb 105   = wceq 1397  ⊤wtru 1398   ∈ wcel 2202  ∀wral 2510   class class class wbr 4088   ↦ cmpt 4150  ^◡ccnv 4724  –1-1-onto→wf1o 5325  ‘cfv 5326   Isom wiso 5327  ℂcc 8029  ℝcr 8030   < clt 8213  -cneg 8350

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-cnex 8122  ax-resscn 8123  ax-1cn 8124  ax-1re 8125  ax-icn 8126  ax-addcl 8127  ax-addrcl 8128  ax-mulcl 8129  ax-addcom 8131  ax-addass 8133  ax-distr 8135  ax-i2m1 8136  ax-0id 8139  ax-rnegex 8140  ax-cnre 8142  ax-pre-ltadd 8147

This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-nel 2498  df-ral 2515  df-rex 2516  df-reu 2517  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-f1 5331  df-fo 5332  df-f1o 5333  df-fv 5334  df-isom 5335  df-riota 5970  df-ov 6020  df-oprab 6021  df-mpo 6022  df-pnf 8215  df-mnf 8216  df-ltxr 8218  df-sub 8351  df-neg 8352

This theorem is referenced by:  infrenegsupex  9827