Theorem lmcn2 15364

Description: The image of a convergent sequence under a continuous map is convergent to the image of the original point. Binary operation version. (Contributed by Mario Carneiro, 15-May-2014.)

Hypotheses

Ref	Expression
txlm.z	⊢ 𝑍 = (ℤ≥‘𝑀)
txlm.m	⊢ (𝜑 → 𝑀 ∈ ℤ)
txlm.j	⊢ (𝜑 → 𝐽 ∈ (TopOn‘𝑋))
txlm.k	⊢ (𝜑 → 𝐾 ∈ (TopOn‘𝑌))
txlm.f	⊢ (𝜑 → 𝐹:𝑍⟶𝑋)
txlm.g	⊢ (𝜑 → 𝐺:𝑍⟶𝑌)
lmcn2.fl	⊢ (𝜑 → 𝐹(⇝𝑡‘𝐽)𝑅)
lmcn2.gl	⊢ (𝜑 → 𝐺(⇝𝑡‘𝐾)𝑆)
lmcn2.o	⊢ (𝜑 → 𝑂 ∈ ((𝐽 ×t 𝐾) Cn 𝑁))
lmcn2.h	⊢ 𝐻 = (𝑛 ∈ 𝑍 ↦ ((𝐹‘𝑛)𝑂(𝐺‘𝑛)))

Assertion

Ref	Expression
lmcn2	⊢ (𝜑 → 𝐻(⇝𝑡‘𝑁)(𝑅𝑂𝑆))

Distinct variable groups:   𝑛,𝐹   𝑛,𝑂   𝜑,𝑛   𝑛,𝐺   𝑛,𝐽   𝑛,𝐾   𝑛,𝑋   𝑛,𝑌   𝑛,𝑍

Allowed substitution hints:   𝑅(𝑛)   𝑆(𝑛)   𝐻(𝑛)   𝑀(𝑛)   𝑁(𝑛)

Proof of Theorem lmcn2

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		txlm.f	. . . . . . 7 ⊢ (𝜑 → 𝐹:𝑍⟶𝑋)
2	1	ffvelcdmda 5837	. . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐹‘𝑛) ∈ 𝑋)
3		txlm.g	. . . . . . 7 ⊢ (𝜑 → 𝐺:𝑍⟶𝑌)
4	3	ffvelcdmda 5837	. . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐺‘𝑛) ∈ 𝑌)
5	2, 4	opelxpd 4805	. . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ⟨(𝐹‘𝑛), (𝐺‘𝑛)⟩ ∈ (𝑋 × 𝑌))
6		eqidd 2239	. . . . 5 ⊢ (𝜑 → (𝑛 ∈ 𝑍 ↦ ⟨(𝐹‘𝑛), (𝐺‘𝑛)⟩) = (𝑛 ∈ 𝑍 ↦ ⟨(𝐹‘𝑛), (𝐺‘𝑛)⟩))
7		txlm.j	. . . . . . . 8 ⊢ (𝜑 → 𝐽 ∈ (TopOn‘𝑋))
8		txlm.k	. . . . . . . 8 ⊢ (𝜑 → 𝐾 ∈ (TopOn‘𝑌))
9		txtopon 15346	. . . . . . . 8 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌)) → (𝐽 ×t 𝐾) ∈ (TopOn‘(𝑋 × 𝑌)))
10	7, 8, 9	syl2anc 415	. . . . . . 7 ⊢ (𝜑 → (𝐽 ×t 𝐾) ∈ (TopOn‘(𝑋 × 𝑌)))
11		lmcn2.o	. . . . . . . . 9 ⊢ (𝜑 → 𝑂 ∈ ((𝐽 ×t 𝐾) Cn 𝑁))
12		cntop2 15286	. . . . . . . . 9 ⊢ (𝑂 ∈ ((𝐽 ×t 𝐾) Cn 𝑁) → 𝑁 ∈ Top)
13	11, 12	syl 14	. . . . . . . 8 ⊢ (𝜑 → 𝑁 ∈ Top)
14		toptopon2 15103	. . . . . . . 8 ⊢ (𝑁 ∈ Top ↔ 𝑁 ∈ (TopOn‘∪ 𝑁))
15	13, 14	sylib 122	. . . . . . 7 ⊢ (𝜑 → 𝑁 ∈ (TopOn‘∪ 𝑁))
16		cnf2 15289	. . . . . . 7 ⊢ (((𝐽 ×t 𝐾) ∈ (TopOn‘(𝑋 × 𝑌)) ∧ 𝑁 ∈ (TopOn‘∪ 𝑁) ∧ 𝑂 ∈ ((𝐽 ×t 𝐾) Cn 𝑁)) → 𝑂:(𝑋 × 𝑌)⟶∪ 𝑁)
17	10, 15, 11, 16	syl3anc 1278	. . . . . 6 ⊢ (𝜑 → 𝑂:(𝑋 × 𝑌)⟶∪ 𝑁)
18	17	feqmptd 5753	. . . . 5 ⊢ (𝜑 → 𝑂 = (𝑥 ∈ (𝑋 × 𝑌) ↦ (𝑂‘𝑥)))
19		fveq2 5693	. . . . . 6 ⊢ (𝑥 = ⟨(𝐹‘𝑛), (𝐺‘𝑛)⟩ → (𝑂‘𝑥) = (𝑂‘⟨(𝐹‘𝑛), (𝐺‘𝑛)⟩))
20		df-ov 6082	. . . . . 6 ⊢ ((𝐹‘𝑛)𝑂(𝐺‘𝑛)) = (𝑂‘⟨(𝐹‘𝑛), (𝐺‘𝑛)⟩)
21	19, 20	eqtr4di 2289	. . . . 5 ⊢ (𝑥 = ⟨(𝐹‘𝑛), (𝐺‘𝑛)⟩ → (𝑂‘𝑥) = ((𝐹‘𝑛)𝑂(𝐺‘𝑛)))
22	5, 6, 18, 21	fmptco 5868	. . . 4 ⊢ (𝜑 → (𝑂 ∘ (𝑛 ∈ 𝑍 ↦ ⟨(𝐹‘𝑛), (𝐺‘𝑛)⟩)) = (𝑛 ∈ 𝑍 ↦ ((𝐹‘𝑛)𝑂(𝐺‘𝑛))))
23		lmcn2.h	. . . 4 ⊢ 𝐻 = (𝑛 ∈ 𝑍 ↦ ((𝐹‘𝑛)𝑂(𝐺‘𝑛)))
24	22, 23	eqtr4di 2289	. . 3 ⊢ (𝜑 → (𝑂 ∘ (𝑛 ∈ 𝑍 ↦ ⟨(𝐹‘𝑛), (𝐺‘𝑛)⟩)) = 𝐻)
25		lmcn2.fl	. . . . 5 ⊢ (𝜑 → 𝐹(⇝𝑡‘𝐽)𝑅)
26		lmcn2.gl	. . . . 5 ⊢ (𝜑 → 𝐺(⇝𝑡‘𝐾)𝑆)
27		txlm.z	. . . . . 6 ⊢ 𝑍 = (ℤ≥‘𝑀)
28		txlm.m	. . . . . 6 ⊢ (𝜑 → 𝑀 ∈ ℤ)
29		eqid 2238	. . . . . 6 ⊢ (𝑛 ∈ 𝑍 ↦ ⟨(𝐹‘𝑛), (𝐺‘𝑛)⟩) = (𝑛 ∈ 𝑍 ↦ ⟨(𝐹‘𝑛), (𝐺‘𝑛)⟩)
30	27, 28, 7, 8, 1, 3, 29	txlm 15363	. . . . 5 ⊢ (𝜑 → ((𝐹(⇝𝑡‘𝐽)𝑅 ∧ 𝐺(⇝𝑡‘𝐾)𝑆) ↔ (𝑛 ∈ 𝑍 ↦ ⟨(𝐹‘𝑛), (𝐺‘𝑛)⟩)(⇝𝑡‘(𝐽 ×t 𝐾))⟨𝑅, 𝑆⟩))
31	25, 26, 30	mpbi2and 956	. . . 4 ⊢ (𝜑 → (𝑛 ∈ 𝑍 ↦ ⟨(𝐹‘𝑛), (𝐺‘𝑛)⟩)(⇝𝑡‘(𝐽 ×t 𝐾))⟨𝑅, 𝑆⟩)
32	31, 11	lmcn 15335	. . 3 ⊢ (𝜑 → (𝑂 ∘ (𝑛 ∈ 𝑍 ↦ ⟨(𝐹‘𝑛), (𝐺‘𝑛)⟩))(⇝𝑡‘𝑁)(𝑂‘⟨𝑅, 𝑆⟩))
33	24, 32	eqbrtrrd 4152	. 2 ⊢ (𝜑 → 𝐻(⇝𝑡‘𝑁)(𝑂‘⟨𝑅, 𝑆⟩))
34		df-ov 6082	. 2 ⊢ (𝑅𝑂𝑆) = (𝑂‘⟨𝑅, 𝑆⟩)
35	33, 34	breqtrrdi 4170	1 ⊢ (𝜑 → 𝐻(⇝𝑡‘𝑁)(𝑅𝑂𝑆))

Syntax hints:   → wi 4   ∧ wa 104   = wceq 1402   ∈ wcel 2209  ⟨cop 3711  ∪ cuni 3933   class class class wbr 4128   ↦ cmpt 4190   × cxp 4770   ∘ ccom 4776  ⟶wf 5371  ‘cfv 5375  (class class class)co 6079  ℤcz 9627  ℤ_≥cuz 9904  Topctop 15081  TopOnctopon 15094   Cn ccn 15269  ⇝_𝑡clm 15271   ×_t ctx 15336

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-coll 4244  ax-sep 4247  ax-pow 4309  ax-pr 4344  ax-un 4576  ax-setind 4682  ax-cnex 8264  ax-resscn 8265  ax-1cn 8266  ax-1re 8267  ax-icn 8268  ax-addcl 8269  ax-addrcl 8270  ax-mulcl 8271  ax-addcom 8273  ax-addass 8275  ax-distr 8277  ax-i2m1 8278  ax-0lt1 8279  ax-0id 8281  ax-rnegex 8282  ax-cnre 8284  ax-pre-ltirr 8285  ax-pre-ltwlin 8286  ax-pre-lttrn 8287  ax-pre-apti 8288  ax-pre-ltadd 8289

This theorem depends on definitions:  df-bi 117  df-dc 847  df-3or 1010  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-if 3639  df-pw 3690  df-sn 3714  df-pr 3715  df-op 3717  df-uni 3934  df-int 3969  df-iun 4012  df-br 4129  df-opab 4191  df-mpt 4192  df-id 4436  df-xp 4778  df-rel 4779  df-cnv 4780  df-co 4781  df-dm 4782  df-rn 4783  df-res 4784  df-ima 4785  df-iota 5335  df-fun 5377  df-fn 5378  df-f 5379  df-f1 5380  df-fo 5381  df-f1o 5382  df-fv 5383  df-riota 6032  df-ov 6082  df-oprab 6083  df-mpo 6084  df-1st 6368  df-2nd 6369  df-map 6918  df-pm 6919  df-pnf 8356  df-mnf 8357  df-xr 8358  df-ltxr 8359  df-le 8360  df-sub 8493  df-neg 8494  df-inn 9288  df-n0 9547  df-z 9628  df-uz 9905  df-topgen 13597  df-top 15082  df-topon 15095  df-bases 15127  df-cn 15272  df-cnp 15273  df-lm 15274  df-tx 15337

This theorem is referenced by: (None)