Theorem ello1d 15570

Description: Sufficient condition for elementhood in the set of eventually upper bounded functions. (Contributed by Mario Carneiro, 26-May-2016.)

Hypotheses

Ref	Expression
ello1mpt.1	⊢ (𝜑 → 𝐴 ⊆ ℝ)
ello1mpt.2	⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℝ)
ello1d.3	⊢ (𝜑 → 𝐶 ∈ ℝ)
ello1d.4	⊢ (𝜑 → 𝑀 ∈ ℝ)
ello1d.5	⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝐶 ≤ 𝑥)) → 𝐵 ≤ 𝑀)

Assertion

Ref	Expression
ello1d	⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ ≤𝑂(1))

Distinct variable groups:   𝑥,𝐴   𝑥,𝐶   𝜑,𝑥   𝑥,𝑀

Allowed substitution hint:   𝐵(𝑥)

Proof of Theorem ello1d

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

Step	Hyp	Ref	Expression
1		ello1d.3	. . 3 ⊢ (𝜑 → 𝐶 ∈ ℝ)
2		ello1d.4	. . 3 ⊢ (𝜑 → 𝑀 ∈ ℝ)
3		ello1d.5	. . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝐶 ≤ 𝑥)) → 𝐵 ≤ 𝑀)
4	3	expr 461	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝐶 ≤ 𝑥 → 𝐵 ≤ 𝑀))
5	4	ralrimiva 3157	. . 3 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 (𝐶 ≤ 𝑥 → 𝐵 ≤ 𝑀))
6		breq1 5112	. . . . . 6 ⊢ (𝑦 = 𝐶 → (𝑦 ≤ 𝑥 ↔ 𝐶 ≤ 𝑥))
7	6	imbi1d 344	. . . . 5 ⊢ (𝑦 = 𝐶 → ((𝑦 ≤ 𝑥 → 𝐵 ≤ 𝑚) ↔ (𝐶 ≤ 𝑥 → 𝐵 ≤ 𝑚)))
8	7	ralbidv 3188	. . . 4 ⊢ (𝑦 = 𝐶 → (∀𝑥 ∈ 𝐴 (𝑦 ≤ 𝑥 → 𝐵 ≤ 𝑚) ↔ ∀𝑥 ∈ 𝐴 (𝐶 ≤ 𝑥 → 𝐵 ≤ 𝑚)))
9		breq2 5113	. . . . . 6 ⊢ (𝑚 = 𝑀 → (𝐵 ≤ 𝑚 ↔ 𝐵 ≤ 𝑀))
10	9	imbi2d 343	. . . . 5 ⊢ (𝑚 = 𝑀 → ((𝐶 ≤ 𝑥 → 𝐵 ≤ 𝑚) ↔ (𝐶 ≤ 𝑥 → 𝐵 ≤ 𝑀)))
11	10	ralbidv 3188	. . . 4 ⊢ (𝑚 = 𝑀 → (∀𝑥 ∈ 𝐴 (𝐶 ≤ 𝑥 → 𝐵 ≤ 𝑚) ↔ ∀𝑥 ∈ 𝐴 (𝐶 ≤ 𝑥 → 𝐵 ≤ 𝑀)))
12	8, 11	rspc2ev 3594	. . 3 ⊢ ((𝐶 ∈ ℝ ∧ 𝑀 ∈ ℝ ∧ ∀𝑥 ∈ 𝐴 (𝐶 ≤ 𝑥 → 𝐵 ≤ 𝑀)) → ∃𝑦 ∈ ℝ ∃𝑚 ∈ ℝ ∀𝑥 ∈ 𝐴 (𝑦 ≤ 𝑥 → 𝐵 ≤ 𝑚))
13	1, 2, 5, 12	syl3anc 1398	. 2 ⊢ (𝜑 → ∃𝑦 ∈ ℝ ∃𝑚 ∈ ℝ ∀𝑥 ∈ 𝐴 (𝑦 ≤ 𝑥 → 𝐵 ≤ 𝑚))
14		ello1mpt.1	. . 3 ⊢ (𝜑 → 𝐴 ⊆ ℝ)
15		ello1mpt.2	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℝ)
16	14, 15	ello1mpt 15568	. 2 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∈ ≤𝑂(1) ↔ ∃𝑦 ∈ ℝ ∃𝑚 ∈ ℝ ∀𝑥 ∈ 𝐴 (𝑦 ≤ 𝑥 → 𝐵 ≤ 𝑚)))
17	13, 16	mpbird 260	1 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ ≤𝑂(1))

Syntax hints:   → wi 4   ∧ wa 400   = wceq 1570   ∈ wcel 2143  ∀wral 3079  ∃wrex 3089   ⊆ wss 3905   class class class wbr 5109   ↦ cmpt 5192  ℝcr 11094   ≤ cle 11239  ≤𝑂(1)clo1 15534

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-sep 5257  ax-nul 5269  ax-pow 5336  ax-pr 5404  ax-un 7732  ax-cnex 11151  ax-resscn 11152  ax-pre-lttri 11169  ax-pre-lttrn 11170

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-nf 1814  df-sb 2097  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-nel 3065  df-ral 3080  df-rex 3090  df-rab 3417  df-v 3457  df-sbc 3745  df-csb 3854  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-nul 4287  df-if 4488  df-pw 4564  df-sn 4590  df-pr 4592  df-op 4596  df-uni 4873  df-br 5110  df-opab 5174  df-mpt 5193  df-id 5556  df-po 5569  df-so 5570  df-xp 5667  df-rel 5668  df-cnv 5669  df-co 5670  df-dm 5671  df-rn 5672  df-res 5673  df-ima 5674  df-iota 6492  df-fun 6538  df-fn 6539  df-f 6540  df-f1 6541  df-fo 6542  df-f1o 6543  df-fv 6544  df-ov 7413  df-oprab 7414  df-mpo 7415  df-er 8690  df-pm 8823  df-en 8940  df-dom 8941  df-sdom 8942  df-pnf 11240  df-mnf 11241  df-xr 11242  df-ltxr 11243  df-le 11244  df-ico 13373  df-lo1 15538

This theorem is referenced by:  elo1d  15583  o1lo12  15585  icco1  15587  lo1const  15668  dirith2  27692  pntrlog2bndlem4  27744  pntrlog2bndlem6  27747