Theorem rlim2 15205

Description: Rewrite rlim 15204 for a mapping operation. (Contributed by Mario Carneiro, 16-Sep-2014.) (Revised by Mario Carneiro, 28-Feb-2015.)

Hypotheses

Ref	Expression
rlim2.1	⊢ (𝜑 → ∀𝑧 ∈ 𝐴 𝐵 ∈ ℂ)
rlim2.2	⊢ (𝜑 → 𝐴 ⊆ ℝ)
rlim2.3	⊢ (𝜑 → 𝐶 ∈ ℂ)

Assertion

Ref	Expression
rlim2	⊢ (𝜑 → ((𝑧 ∈ 𝐴 ↦ 𝐵) ⇝𝑟 𝐶 ↔ ∀𝑥 ∈ ℝ+ ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝐴 (𝑦 ≤ 𝑧 → (abs‘(𝐵 − 𝐶)) < 𝑥)))

Distinct variable groups:   𝑥,𝑦,𝑧,𝐴   𝑥,𝐵,𝑦   𝑥,𝐶,𝑦,𝑧   𝜑,𝑥,𝑦

Allowed substitution hints:   𝜑(𝑧)   𝐵(𝑧)

Proof of Theorem rlim2

Dummy variable 𝑤 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		rlim2.1	. . . 4 ⊢ (𝜑 → ∀𝑧 ∈ 𝐴 𝐵 ∈ ℂ)
2		eqid 2738	. . . . 5 ⊢ (𝑧 ∈ 𝐴 ↦ 𝐵) = (𝑧 ∈ 𝐴 ↦ 𝐵)
3	2	fmpt 6984	. . . 4 ⊢ (∀𝑧 ∈ 𝐴 𝐵 ∈ ℂ ↔ (𝑧 ∈ 𝐴 ↦ 𝐵):𝐴⟶ℂ)
4	1, 3	sylib 217	. . 3 ⊢ (𝜑 → (𝑧 ∈ 𝐴 ↦ 𝐵):𝐴⟶ℂ)
5		rlim2.2	. . 3 ⊢ (𝜑 → 𝐴 ⊆ ℝ)
6		eqidd 2739	. . 3 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐴) → ((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤) = ((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤))
7	4, 5, 6	rlim 15204	. 2 ⊢ (𝜑 → ((𝑧 ∈ 𝐴 ↦ 𝐵) ⇝𝑟 𝐶 ↔ (𝐶 ∈ ℂ ∧ ∀𝑥 ∈ ℝ+ ∃𝑦 ∈ ℝ ∀𝑤 ∈ 𝐴 (𝑦 ≤ 𝑤 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤) − 𝐶)) < 𝑥))))
8		rlim2.3	. . 3 ⊢ (𝜑 → 𝐶 ∈ ℂ)
9	8	biantrurd 533	. 2 ⊢ (𝜑 → (∀𝑥 ∈ ℝ+ ∃𝑦 ∈ ℝ ∀𝑤 ∈ 𝐴 (𝑦 ≤ 𝑤 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤) − 𝐶)) < 𝑥) ↔ (𝐶 ∈ ℂ ∧ ∀𝑥 ∈ ℝ+ ∃𝑦 ∈ ℝ ∀𝑤 ∈ 𝐴 (𝑦 ≤ 𝑤 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤) − 𝐶)) < 𝑥))))
10		nfv 1917	. . . . . . 7 ⊢ Ⅎ𝑧 𝑦 ≤ 𝑤
11		nfcv 2907	. . . . . . . . 9 ⊢ Ⅎ𝑧abs
12		nffvmpt1 6785	. . . . . . . . . 10 ⊢ Ⅎ𝑧((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤)
13		nfcv 2907	. . . . . . . . . 10 ⊢ Ⅎ𝑧 −
14		nfcv 2907	. . . . . . . . . 10 ⊢ Ⅎ𝑧𝐶
15	12, 13, 14	nfov 7305	. . . . . . . . 9 ⊢ Ⅎ𝑧(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤) − 𝐶)
16	11, 15	nffv 6784	. . . . . . . 8 ⊢ Ⅎ𝑧(abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤) − 𝐶))
17		nfcv 2907	. . . . . . . 8 ⊢ Ⅎ𝑧 <
18		nfcv 2907	. . . . . . . 8 ⊢ Ⅎ𝑧𝑥
19	16, 17, 18	nfbr 5121	. . . . . . 7 ⊢ Ⅎ𝑧(abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤) − 𝐶)) < 𝑥
20	10, 19	nfim 1899	. . . . . 6 ⊢ Ⅎ𝑧(𝑦 ≤ 𝑤 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤) − 𝐶)) < 𝑥)
21		nfv 1917	. . . . . 6 ⊢ Ⅎ𝑤(𝑦 ≤ 𝑧 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑧) − 𝐶)) < 𝑥)
22		breq2 5078	. . . . . . 7 ⊢ (𝑤 = 𝑧 → (𝑦 ≤ 𝑤 ↔ 𝑦 ≤ 𝑧))
23	22	imbrov2fvoveq 7300	. . . . . 6 ⊢ (𝑤 = 𝑧 → ((𝑦 ≤ 𝑤 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤) − 𝐶)) < 𝑥) ↔ (𝑦 ≤ 𝑧 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑧) − 𝐶)) < 𝑥)))
24	20, 21, 23	cbvralw 3373	. . . . 5 ⊢ (∀𝑤 ∈ 𝐴 (𝑦 ≤ 𝑤 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤) − 𝐶)) < 𝑥) ↔ ∀𝑧 ∈ 𝐴 (𝑦 ≤ 𝑧 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑧) − 𝐶)) < 𝑥))
25	2	fvmpt2 6886	. . . . . . . . . 10 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝐵 ∈ ℂ) → ((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑧) = 𝐵)
26	25	fvoveq1d 7297	. . . . . . . . 9 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝐵 ∈ ℂ) → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑧) − 𝐶)) = (abs‘(𝐵 − 𝐶)))
27	26	breq1d 5084	. . . . . . . 8 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝐵 ∈ ℂ) → ((abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑧) − 𝐶)) < 𝑥 ↔ (abs‘(𝐵 − 𝐶)) < 𝑥))
28	27	imbi2d 341	. . . . . . 7 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝐵 ∈ ℂ) → ((𝑦 ≤ 𝑧 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑧) − 𝐶)) < 𝑥) ↔ (𝑦 ≤ 𝑧 → (abs‘(𝐵 − 𝐶)) < 𝑥)))
29	28	ralimiaa 3086	. . . . . 6 ⊢ (∀𝑧 ∈ 𝐴 𝐵 ∈ ℂ → ∀𝑧 ∈ 𝐴 ((𝑦 ≤ 𝑧 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑧) − 𝐶)) < 𝑥) ↔ (𝑦 ≤ 𝑧 → (abs‘(𝐵 − 𝐶)) < 𝑥)))
30		ralbi 3089	. . . . . 6 ⊢ (∀𝑧 ∈ 𝐴 ((𝑦 ≤ 𝑧 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑧) − 𝐶)) < 𝑥) ↔ (𝑦 ≤ 𝑧 → (abs‘(𝐵 − 𝐶)) < 𝑥)) → (∀𝑧 ∈ 𝐴 (𝑦 ≤ 𝑧 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑧) − 𝐶)) < 𝑥) ↔ ∀𝑧 ∈ 𝐴 (𝑦 ≤ 𝑧 → (abs‘(𝐵 − 𝐶)) < 𝑥)))
31	1, 29, 30	3syl 18	. . . . 5 ⊢ (𝜑 → (∀𝑧 ∈ 𝐴 (𝑦 ≤ 𝑧 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑧) − 𝐶)) < 𝑥) ↔ ∀𝑧 ∈ 𝐴 (𝑦 ≤ 𝑧 → (abs‘(𝐵 − 𝐶)) < 𝑥)))
32	24, 31	bitrid 282	. . . 4 ⊢ (𝜑 → (∀𝑤 ∈ 𝐴 (𝑦 ≤ 𝑤 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤) − 𝐶)) < 𝑥) ↔ ∀𝑧 ∈ 𝐴 (𝑦 ≤ 𝑧 → (abs‘(𝐵 − 𝐶)) < 𝑥)))
33	32	rexbidv 3226	. . 3 ⊢ (𝜑 → (∃𝑦 ∈ ℝ ∀𝑤 ∈ 𝐴 (𝑦 ≤ 𝑤 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤) − 𝐶)) < 𝑥) ↔ ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝐴 (𝑦 ≤ 𝑧 → (abs‘(𝐵 − 𝐶)) < 𝑥)))
34	33	ralbidv 3112	. 2 ⊢ (𝜑 → (∀𝑥 ∈ ℝ+ ∃𝑦 ∈ ℝ ∀𝑤 ∈ 𝐴 (𝑦 ≤ 𝑤 → (abs‘(((𝑧 ∈ 𝐴 ↦ 𝐵)‘𝑤) − 𝐶)) < 𝑥) ↔ ∀𝑥 ∈ ℝ+ ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝐴 (𝑦 ≤ 𝑧 → (abs‘(𝐵 − 𝐶)) < 𝑥)))
35	7, 9, 34	3bitr2d 307	1 ⊢ (𝜑 → ((𝑧 ∈ 𝐴 ↦ 𝐵) ⇝𝑟 𝐶 ↔ ∀𝑥 ∈ ℝ+ ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝐴 (𝑦 ≤ 𝑧 → (abs‘(𝐵 − 𝐶)) < 𝑥)))

Syntax hints:   → wi 4   ↔ wb 205   ∧ wa 396   ∈ wcel 2106  ∀wral 3064  ∃wrex 3065   ⊆ wss 3887   class class class wbr 5074   ↦ cmpt 5157  ⟶wf 6429  ‘cfv 6433  (class class class)co 7275  ℂcc 10869  ℝcr 10870   < clt 11009   ≤ cle 11010   − cmin 11205  ℝ⁺crp 12730  abscabs 14945   ⇝_𝑟 crli 15194

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-sep 5223  ax-nul 5230  ax-pow 5288  ax-pr 5352  ax-un 7588  ax-cnex 10927  ax-resscn 10928

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-ral 3069  df-rex 3070  df-rab 3073  df-v 3434  df-sbc 3717  df-csb 3833  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-br 5075  df-opab 5137  df-mpt 5158  df-id 5489  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-ima 5602  df-iota 6391  df-fun 6435  df-fn 6436  df-f 6437  df-fv 6441  df-ov 7278  df-oprab 7279  df-mpo 7280  df-pm 8618  df-rlim 15198

This theorem is referenced by:  rlim2lt  15206  rlim3  15207  rlim0  15217  rlimi  15222  rlimconst  15253  climrlim2  15256  rlimcn1  15297  rlimcn3  15299  chtppilim  26623  pntlem3  26757