Theorem negiso 9275

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 8697	. . . . . 6 ⊢ ((⊤ ∧ 𝑥 ∈ ℝ) → -𝑥 ∈ ℝ)
4		simpr 110	. . . . . . 7 ⊢ ((⊤ ∧ 𝑦 ∈ ℝ) → 𝑦 ∈ ℝ)
5	4	renegcld 8697	. . . . . 6 ⊢ ((⊤ ∧ 𝑦 ∈ ℝ) → -𝑦 ∈ ℝ)
6		recn 8302	. . . . . . . 8 ⊢ (𝑥 ∈ ℝ → 𝑥 ∈ ℂ)
7		recn 8302	. . . . . . . 8 ⊢ (𝑦 ∈ ℝ → 𝑦 ∈ ℂ)
8		negcon2 8569	. . . . . . . 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 6284	. . . . 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 8344	. . . . . . 7 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → 𝑧 ∈ ℂ)
16	15	negcld 8614	. . . . . 6 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → -𝑧 ∈ ℂ)
17	7	adantl 277	. . . . . . 7 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → 𝑦 ∈ ℂ)
18	17	negcld 8614	. . . . . 6 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → -𝑦 ∈ ℂ)
19		brcnvg 4956	. . . . . 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 8509	. . . . . . . 8 ⊢ (𝑥 = 𝑧 → -𝑥 = -𝑧)
23	22	adantl 277	. . . . . . 7 ⊢ (((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) ∧ 𝑥 = 𝑧) → -𝑥 = -𝑧)
24	21, 23, 14, 16	fvmptd 5780	. . . . . 6 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝐹‘𝑧) = -𝑧)
25		negeq 8509	. . . . . . . 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 5780	. . . . . 6 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝐹‘𝑦) = -𝑦)
29	24, 28	breq12d 4138	. . . . 5 ⊢ ((𝑧 ∈ ℝ ∧ 𝑦 ∈ ℝ) → ((𝐹‘𝑧)◡ < (𝐹‘𝑦) ↔ -𝑧◡ < -𝑦))
30		ltneg 8780	. . . . 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 5381	. . 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 8509	. . . 4 ⊢ (𝑦 = 𝑥 → -𝑦 = -𝑥)
36	35	cbvmptv 4222	. . 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)

Syntax hints:   ∧ wa 104   ↔ wb 105   = wceq 1402  ⊤wtru 1403   ∈ wcel 2209  ∀wral 2528   class class class wbr 4125   ↦ cmpt 4187  ^◡ccnv 4768  –1-1-onto→wf1o 5371  ‘cfv 5372   Isom wiso 5373  ℂcc 8167  ℝcr 8168   < clt 8350  -cneg 8488

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 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 4244  ax-pow 4306  ax-pr 4341  ax-un 4573  ax-setind 4679  ax-cnex 8260  ax-resscn 8261  ax-1cn 8262  ax-1re 8263  ax-icn 8264  ax-addcl 8265  ax-addrcl 8266  ax-mulcl 8267  ax-addcom 8269  ax-addass 8271  ax-distr 8273  ax-i2m1 8274  ax-0id 8277  ax-rnegex 8278  ax-cnre 8280  ax-pre-ltadd 8285

This theorem 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 3687  df-sn 3711  df-pr 3712  df-op 3714  df-uni 3931  df-br 4126  df-opab 4188  df-mpt 4189  df-id 4433  df-xp 4775  df-rel 4776  df-cnv 4777  df-co 4778  df-dm 4779  df-rn 4780  df-iota 5332  df-fun 5374  df-fn 5375  df-f 5376  df-f1 5377  df-fo 5378  df-f1o 5379  df-fv 5380  df-isom 5381  df-riota 6028  df-ov 6078  df-oprab 6079  df-mpo 6080  df-pnf 8352  df-mnf 8353  df-ltxr 8355  df-sub 8489  df-neg 8490

This theorem is referenced by:  infrenegsupex  9973