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Theorem mbfi1fseqlem1 25232

Description: Lemma for mbfi1fseq 25238. (Contributed by Mario Carneiro, 16-Aug-2014.)

**Hypotheses**
Ref	Expression
mbfi1fseq.1	⊢ (𝜑 → 𝐹 ∈ MblFn)
mbfi1fseq.2	⊢ (𝜑 → 𝐹:ℝ⟶(0[,)+∞))
mbfi1fseq.3	⊢ 𝐽 = (𝑚 ∈ ℕ, 𝑦 ∈ ℝ ↦ ((⌊‘((𝐹‘𝑦) · (2↑𝑚))) / (2↑𝑚)))

**Assertion**
Ref	Expression
mbfi1fseqlem1	⊢ (𝜑 → 𝐽:(ℕ × ℝ)⟶(0[,)+∞))

Distinct variable groups: 𝑦,𝑚,𝐹 𝑚,𝐽 𝜑,𝑚,𝑦 Allowed substitution hint: 𝐽(𝑦)

**Proof of Theorem mbfi1fseqlem1**
Step	Hyp	Ref	Expression
1		mbfi1fseq.2	. . . . . . . . . 10 ⊢ (𝜑 → 𝐹:ℝ⟶(0[,)+∞))
2		simpr 485	. . . . . . . . . 10 ⊢ ((𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ) → 𝑦 ∈ ℝ)
3		ffvelcdm 7083	. . . . . . . . . 10 ⊢ ((𝐹:ℝ⟶(0[,)+∞) ∧ 𝑦 ∈ ℝ) → (𝐹‘𝑦) ∈ (0[,)+∞))
4	1, 2, 3	syl2an 596	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → (𝐹‘𝑦) ∈ (0[,)+∞))
5		elrege0 13430	. . . . . . . . 9 ⊢ ((𝐹‘𝑦) ∈ (0[,)+∞) ↔ ((𝐹‘𝑦) ∈ ℝ ∧ 0 ≤ (𝐹‘𝑦)))
6	4, 5	sylib 217	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → ((𝐹‘𝑦) ∈ ℝ ∧ 0 ≤ (𝐹‘𝑦)))
7	6	simpld 495	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → (𝐹‘𝑦) ∈ ℝ)
8		2nn 12284	. . . . . . . . . 10 ⊢ 2 ∈ ℕ
9		nnnn0 12478	. . . . . . . . . 10 ⊢ (𝑚 ∈ ℕ → 𝑚 ∈ ℕ₀)
10		nnexpcl 14039	. . . . . . . . . 10 ⊢ ((2 ∈ ℕ ∧ 𝑚 ∈ ℕ₀) → (2↑𝑚) ∈ ℕ)
11	8, 9, 10	sylancr 587	. . . . . . . . 9 ⊢ (𝑚 ∈ ℕ → (2↑𝑚) ∈ ℕ)
12	11	ad2antrl 726	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → (2↑𝑚) ∈ ℕ)
13	12	nnred 12226	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → (2↑𝑚) ∈ ℝ)
14	7, 13	remulcld 11243	. . . . . 6 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → ((𝐹‘𝑦) · (2↑𝑚)) ∈ ℝ)
15		reflcl 13760	. . . . . 6 ⊢ (((𝐹‘𝑦) · (2↑𝑚)) ∈ ℝ → (⌊‘((𝐹‘𝑦) · (2↑𝑚))) ∈ ℝ)
16	14, 15	syl 17	. . . . 5 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → (⌊‘((𝐹‘𝑦) · (2↑𝑚))) ∈ ℝ)
17	16, 12	nndivred 12265	. . . 4 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → ((⌊‘((𝐹‘𝑦) · (2↑𝑚))) / (2↑𝑚)) ∈ ℝ)
18	12	nnnn0d 12531	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → (2↑𝑚) ∈ ℕ₀)
19	18	nn0ge0d 12534	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → 0 ≤ (2↑𝑚))
20		mulge0 11731	. . . . . . . 8 ⊢ ((((𝐹‘𝑦) ∈ ℝ ∧ 0 ≤ (𝐹‘𝑦)) ∧ ((2↑𝑚) ∈ ℝ ∧ 0 ≤ (2↑𝑚))) → 0 ≤ ((𝐹‘𝑦) · (2↑𝑚)))
21	6, 13, 19, 20	syl12anc 835	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → 0 ≤ ((𝐹‘𝑦) · (2↑𝑚)))
22		flge0nn0 13784	. . . . . . 7 ⊢ ((((𝐹‘𝑦) · (2↑𝑚)) ∈ ℝ ∧ 0 ≤ ((𝐹‘𝑦) · (2↑𝑚))) → (⌊‘((𝐹‘𝑦) · (2↑𝑚))) ∈ ℕ₀)
23	14, 21, 22	syl2anc 584	. . . . . 6 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → (⌊‘((𝐹‘𝑦) · (2↑𝑚))) ∈ ℕ₀)
24	23	nn0ge0d 12534	. . . . 5 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → 0 ≤ (⌊‘((𝐹‘𝑦) · (2↑𝑚))))
25	12	nngt0d 12260	. . . . 5 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → 0 < (2↑𝑚))
26		divge0 12082	. . . . 5 ⊢ ((((⌊‘((𝐹‘𝑦) · (2↑𝑚))) ∈ ℝ ∧ 0 ≤ (⌊‘((𝐹‘𝑦) · (2↑𝑚)))) ∧ ((2↑𝑚) ∈ ℝ ∧ 0 < (2↑𝑚))) → 0 ≤ ((⌊‘((𝐹‘𝑦) · (2↑𝑚))) / (2↑𝑚)))
27	16, 24, 13, 25, 26	syl22anc 837	. . . 4 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → 0 ≤ ((⌊‘((𝐹‘𝑦) · (2↑𝑚))) / (2↑𝑚)))
28		elrege0 13430	. . . 4 ⊢ (((⌊‘((𝐹‘𝑦) · (2↑𝑚))) / (2↑𝑚)) ∈ (0[,)+∞) ↔ (((⌊‘((𝐹‘𝑦) · (2↑𝑚))) / (2↑𝑚)) ∈ ℝ ∧ 0 ≤ ((⌊‘((𝐹‘𝑦) · (2↑𝑚))) / (2↑𝑚))))
29	17, 27, 28	sylanbrc 583	. . 3 ⊢ ((𝜑 ∧ (𝑚 ∈ ℕ ∧ 𝑦 ∈ ℝ)) → ((⌊‘((𝐹‘𝑦) · (2↑𝑚))) / (2↑𝑚)) ∈ (0[,)+∞))
30	29	ralrimivva 3200	. 2 ⊢ (𝜑 → ∀𝑚 ∈ ℕ ∀𝑦 ∈ ℝ ((⌊‘((𝐹‘𝑦) · (2↑𝑚))) / (2↑𝑚)) ∈ (0[,)+∞))
31		mbfi1fseq.3	. . 3 ⊢ 𝐽 = (𝑚 ∈ ℕ, 𝑦 ∈ ℝ ↦ ((⌊‘((𝐹‘𝑦) · (2↑𝑚))) / (2↑𝑚)))
32	31	fmpo 8053	. 2 ⊢ (∀𝑚 ∈ ℕ ∀𝑦 ∈ ℝ ((⌊‘((𝐹‘𝑦) · (2↑𝑚))) / (2↑𝑚)) ∈ (0[,)+∞) ↔ 𝐽:(ℕ × ℝ)⟶(0[,)+∞))
33	30, 32	sylib 217	1 ⊢ (𝜑 → 𝐽:(ℕ × ℝ)⟶(0[,)+∞))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 396 = wceq 1541 ∈ wcel 2106 ∀wral 3061 class class class wbr 5148 × cxp 5674 ⟶wf 6539 ‘cfv 6543 (class class class)co 7408 ∈ cmpo 7410 ℝcr 11108 0cc0 11109 · cmul 11114 +∞cpnf 11244 < clt 11247 ≤ cle 11248 / cdiv 11870 ℕcn 12211 2c2 12266 ℕ₀cn0 12471 [,)cico 13325 ⌊cfl 13754 ↑cexp 14026 MblFncmbf 25130

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 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 2703 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7724 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186 ax-pre-sup 11187

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7364 df-ov 7411 df-oprab 7412 df-mpo 7413 df-om 7855 df-1st 7974 df-2nd 7975 df-frecs 8265 df-wrecs 8296 df-recs 8370 df-rdg 8409 df-er 8702 df-en 8939 df-dom 8940 df-sdom 8941 df-sup 9436 df-inf 9437 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-sub 11445 df-neg 11446 df-div 11871 df-nn 12212 df-2 12274 df-n0 12472 df-z 12558 df-uz 12822 df-ico 13329 df-fl 13756 df-seq 13966 df-exp 14027

This theorem is referenced by: mbfi1fseqlem5 25236

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