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Theorem xmettxlem 15320
Description: Lemma for xmettx 15321. (Contributed by Jim Kingdon, 15-Oct-2023.)
Hypotheses
Ref Expression
xmetxp.p 𝑃 = (𝑢 ∈ (𝑋 × 𝑌), 𝑣 ∈ (𝑋 × 𝑌) ↦ sup({((1st𝑢)𝑀(1st𝑣)), ((2nd𝑢)𝑁(2nd𝑣))}, ℝ*, < ))
xmetxp.1 (𝜑𝑀 ∈ (∞Met‘𝑋))
xmetxp.2 (𝜑𝑁 ∈ (∞Met‘𝑌))
xmettx.j 𝐽 = (MetOpen‘𝑀)
xmettx.k 𝐾 = (MetOpen‘𝑁)
xmettx.l 𝐿 = (MetOpen‘𝑃)
Assertion
Ref Expression
xmettxlem (𝜑𝐿 ⊆ (𝐽 ×t 𝐾))
Distinct variable groups:   𝑢,𝑀,𝑣   𝑢,𝑁,𝑣   𝑢,𝑋,𝑣   𝑢,𝑌,𝑣
Allowed substitution hints:   𝜑(𝑣,𝑢)   𝑃(𝑣,𝑢)   𝐽(𝑣,𝑢)   𝐾(𝑣,𝑢)   𝐿(𝑣,𝑢)

Proof of Theorem xmettxlem
Dummy variables 𝑝 𝑟 𝑠 𝑤 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 xmetxp.p . . . . . . . . 9 𝑃 = (𝑢 ∈ (𝑋 × 𝑌), 𝑣 ∈ (𝑋 × 𝑌) ↦ sup({((1st𝑢)𝑀(1st𝑣)), ((2nd𝑢)𝑁(2nd𝑣))}, ℝ*, < ))
2 xmetxp.1 . . . . . . . . 9 (𝜑𝑀 ∈ (∞Met‘𝑋))
3 xmetxp.2 . . . . . . . . 9 (𝜑𝑁 ∈ (∞Met‘𝑌))
41, 2, 3xmetxp 15318 . . . . . . . 8 (𝜑𝑃 ∈ (∞Met‘(𝑋 × 𝑌)))
5 blrn 15223 . . . . . . . 8 (𝑃 ∈ (∞Met‘(𝑋 × 𝑌)) → (𝑤 ∈ ran (ball‘𝑃) ↔ ∃𝑧 ∈ (𝑋 × 𝑌)∃𝑝 ∈ ℝ* 𝑤 = (𝑧(ball‘𝑃)𝑝)))
64, 5syl 14 . . . . . . 7 (𝜑 → (𝑤 ∈ ran (ball‘𝑃) ↔ ∃𝑧 ∈ (𝑋 × 𝑌)∃𝑝 ∈ ℝ* 𝑤 = (𝑧(ball‘𝑃)𝑝)))
76biimpa 296 . . . . . 6 ((𝜑𝑤 ∈ ran (ball‘𝑃)) → ∃𝑧 ∈ (𝑋 × 𝑌)∃𝑝 ∈ ℝ* 𝑤 = (𝑧(ball‘𝑃)𝑝))
8 xmettx.j . . . . . . . . . . . . . . 15 𝐽 = (MetOpen‘𝑀)
98mopntop 15255 . . . . . . . . . . . . . 14 (𝑀 ∈ (∞Met‘𝑋) → 𝐽 ∈ Top)
102, 9syl 14 . . . . . . . . . . . . 13 (𝜑𝐽 ∈ Top)
11 xmettx.k . . . . . . . . . . . . . . 15 𝐾 = (MetOpen‘𝑁)
1211mopntop 15255 . . . . . . . . . . . . . 14 (𝑁 ∈ (∞Met‘𝑌) → 𝐾 ∈ Top)
133, 12syl 14 . . . . . . . . . . . . 13 (𝜑𝐾 ∈ Top)
14 mpoexga 6386 . . . . . . . . . . . . 13 ((𝐽 ∈ Top ∧ 𝐾 ∈ Top) → (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V)
1510, 13, 14syl2anc 411 . . . . . . . . . . . 12 (𝜑 → (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V)
16 rnexg 5003 . . . . . . . . . . . 12 ((𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V → ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V)
1715, 16syl 14 . . . . . . . . . . 11 (𝜑 → ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V)
1817ad3antrrr 492 . . . . . . . . . 10 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V)
19 bastg 14872 . . . . . . . . . 10 (ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V → ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ⊆ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))))
2018, 19syl 14 . . . . . . . . 9 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ⊆ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))))
212ad3antrrr 492 . . . . . . . . . . . 12 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑀 ∈ (∞Met‘𝑋))
22 simplrl 537 . . . . . . . . . . . . 13 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑧 ∈ (𝑋 × 𝑌))
23 xp1st 6337 . . . . . . . . . . . . 13 (𝑧 ∈ (𝑋 × 𝑌) → (1st𝑧) ∈ 𝑋)
2422, 23syl 14 . . . . . . . . . . . 12 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → (1st𝑧) ∈ 𝑋)
25 simplrr 538 . . . . . . . . . . . 12 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑝 ∈ ℝ*)
268blopn 15301 . . . . . . . . . . . 12 ((𝑀 ∈ (∞Met‘𝑋) ∧ (1st𝑧) ∈ 𝑋𝑝 ∈ ℝ*) → ((1st𝑧)(ball‘𝑀)𝑝) ∈ 𝐽)
2721, 24, 25, 26syl3anc 1274 . . . . . . . . . . 11 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → ((1st𝑧)(ball‘𝑀)𝑝) ∈ 𝐽)
283ad3antrrr 492 . . . . . . . . . . . 12 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑁 ∈ (∞Met‘𝑌))
29 xp2nd 6338 . . . . . . . . . . . . 13 (𝑧 ∈ (𝑋 × 𝑌) → (2nd𝑧) ∈ 𝑌)
3022, 29syl 14 . . . . . . . . . . . 12 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → (2nd𝑧) ∈ 𝑌)
3111blopn 15301 . . . . . . . . . . . 12 ((𝑁 ∈ (∞Met‘𝑌) ∧ (2nd𝑧) ∈ 𝑌𝑝 ∈ ℝ*) → ((2nd𝑧)(ball‘𝑁)𝑝) ∈ 𝐾)
3228, 30, 25, 31syl3anc 1274 . . . . . . . . . . 11 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → ((2nd𝑧)(ball‘𝑁)𝑝) ∈ 𝐾)
33 simpr 110 . . . . . . . . . . . 12 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑤 = (𝑧(ball‘𝑃)𝑝))
341, 21, 28, 25, 22xmetxpbl 15319 . . . . . . . . . . . 12 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → (𝑧(ball‘𝑃)𝑝) = (((1st𝑧)(ball‘𝑀)𝑝) × ((2nd𝑧)(ball‘𝑁)𝑝)))
3533, 34eqtrd 2264 . . . . . . . . . . 11 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑤 = (((1st𝑧)(ball‘𝑀)𝑝) × ((2nd𝑧)(ball‘𝑁)𝑝)))
36 xpeq1 4745 . . . . . . . . . . . . 13 (𝑟 = ((1st𝑧)(ball‘𝑀)𝑝) → (𝑟 × 𝑠) = (((1st𝑧)(ball‘𝑀)𝑝) × 𝑠))
3736eqeq2d 2243 . . . . . . . . . . . 12 (𝑟 = ((1st𝑧)(ball‘𝑀)𝑝) → (𝑤 = (𝑟 × 𝑠) ↔ 𝑤 = (((1st𝑧)(ball‘𝑀)𝑝) × 𝑠)))
38 xpeq2 4746 . . . . . . . . . . . . 13 (𝑠 = ((2nd𝑧)(ball‘𝑁)𝑝) → (((1st𝑧)(ball‘𝑀)𝑝) × 𝑠) = (((1st𝑧)(ball‘𝑀)𝑝) × ((2nd𝑧)(ball‘𝑁)𝑝)))
3938eqeq2d 2243 . . . . . . . . . . . 12 (𝑠 = ((2nd𝑧)(ball‘𝑁)𝑝) → (𝑤 = (((1st𝑧)(ball‘𝑀)𝑝) × 𝑠) ↔ 𝑤 = (((1st𝑧)(ball‘𝑀)𝑝) × ((2nd𝑧)(ball‘𝑁)𝑝))))
4037, 39rspc2ev 2926 . . . . . . . . . . 11 ((((1st𝑧)(ball‘𝑀)𝑝) ∈ 𝐽 ∧ ((2nd𝑧)(ball‘𝑁)𝑝) ∈ 𝐾𝑤 = (((1st𝑧)(ball‘𝑀)𝑝) × ((2nd𝑧)(ball‘𝑁)𝑝))) → ∃𝑟𝐽𝑠𝐾 𝑤 = (𝑟 × 𝑠))
4127, 32, 35, 40syl3anc 1274 . . . . . . . . . 10 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → ∃𝑟𝐽𝑠𝐾 𝑤 = (𝑟 × 𝑠))
42 eqid 2231 . . . . . . . . . . . 12 (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) = (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))
4342elrnmpog 6144 . . . . . . . . . . 11 (𝑤 ∈ V → (𝑤 ∈ ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ↔ ∃𝑟𝐽𝑠𝐾 𝑤 = (𝑟 × 𝑠)))
4443elv 2807 . . . . . . . . . 10 (𝑤 ∈ ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ↔ ∃𝑟𝐽𝑠𝐾 𝑤 = (𝑟 × 𝑠))
4541, 44sylibr 134 . . . . . . . . 9 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑤 ∈ ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)))
4620, 45sseldd 3229 . . . . . . . 8 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑤 ∈ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))))
4746ex 115 . . . . . . 7 (((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) → (𝑤 = (𝑧(ball‘𝑃)𝑝) → 𝑤 ∈ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)))))
4847rexlimdvva 2659 . . . . . 6 ((𝜑𝑤 ∈ ran (ball‘𝑃)) → (∃𝑧 ∈ (𝑋 × 𝑌)∃𝑝 ∈ ℝ* 𝑤 = (𝑧(ball‘𝑃)𝑝) → 𝑤 ∈ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)))))
497, 48mpd 13 . . . . 5 ((𝜑𝑤 ∈ ran (ball‘𝑃)) → 𝑤 ∈ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))))
5049ex 115 . . . 4 (𝜑 → (𝑤 ∈ ran (ball‘𝑃) → 𝑤 ∈ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)))))
5150ssrdv 3234 . . 3 (𝜑 → ran (ball‘𝑃) ⊆ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))))
52 blex 15198 . . . . 5 (𝑃 ∈ (∞Met‘(𝑋 × 𝑌)) → (ball‘𝑃) ∈ V)
53 rnexg 5003 . . . . 5 ((ball‘𝑃) ∈ V → ran (ball‘𝑃) ∈ V)
544, 52, 533syl 17 . . . 4 (𝜑 → ran (ball‘𝑃) ∈ V)
55 tgss3 14889 . . . 4 ((ran (ball‘𝑃) ∈ V ∧ ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V) → ((topGen‘ran (ball‘𝑃)) ⊆ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))) ↔ ran (ball‘𝑃) ⊆ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)))))
5654, 17, 55syl2anc 411 . . 3 (𝜑 → ((topGen‘ran (ball‘𝑃)) ⊆ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))) ↔ ran (ball‘𝑃) ⊆ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)))))
5751, 56mpbird 167 . 2 (𝜑 → (topGen‘ran (ball‘𝑃)) ⊆ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))))
58 xmettx.l . . . 4 𝐿 = (MetOpen‘𝑃)
5958mopnval 15253 . . 3 (𝑃 ∈ (∞Met‘(𝑋 × 𝑌)) → 𝐿 = (topGen‘ran (ball‘𝑃)))
604, 59syl 14 . 2 (𝜑𝐿 = (topGen‘ran (ball‘𝑃)))
61 eqid 2231 . . . 4 ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) = ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))
6261txval 15066 . . 3 ((𝐽 ∈ Top ∧ 𝐾 ∈ Top) → (𝐽 ×t 𝐾) = (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))))
6310, 13, 62syl2anc 411 . 2 (𝜑 → (𝐽 ×t 𝐾) = (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))))
6457, 60, 633sstr4d 3273 1 (𝜑𝐿 ⊆ (𝐽 ×t 𝐾))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104  wb 105   = wceq 1398  wcel 2202  wrex 2512  Vcvv 2803  wss 3201  {cpr 3674   × cxp 4729  ran crn 4732  cfv 5333  (class class class)co 6028  cmpo 6030  1st c1st 6310  2nd c2nd 6311  supcsup 7241  *cxr 8272   < clt 8273  topGenctg 13417  ∞Metcxmet 14632  ballcbl 14634  MetOpencmopn 14637  Topctop 14808   ×t ctx 15063
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 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2204  ax-14 2205  ax-ext 2213  ax-coll 4209  ax-sep 4212  ax-nul 4220  ax-pow 4270  ax-pr 4305  ax-un 4536  ax-setind 4641  ax-iinf 4692  ax-cnex 8183  ax-resscn 8184  ax-1cn 8185  ax-1re 8186  ax-icn 8187  ax-addcl 8188  ax-addrcl 8189  ax-mulcl 8190  ax-mulrcl 8191  ax-addcom 8192  ax-mulcom 8193  ax-addass 8194  ax-mulass 8195  ax-distr 8196  ax-i2m1 8197  ax-0lt1 8198  ax-1rid 8199  ax-0id 8200  ax-rnegex 8201  ax-precex 8202  ax-cnre 8203  ax-pre-ltirr 8204  ax-pre-ltwlin 8205  ax-pre-lttrn 8206  ax-pre-apti 8207  ax-pre-ltadd 8208  ax-pre-mulgt0 8209  ax-pre-mulext 8210  ax-arch 8211  ax-caucvg 8212
This theorem depends on definitions:  df-bi 117  df-stab 839  df-dc 843  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-ne 2404  df-nel 2499  df-ral 2516  df-rex 2517  df-reu 2518  df-rmo 2519  df-rab 2520  df-v 2805  df-sbc 3033  df-csb 3129  df-dif 3203  df-un 3205  df-in 3207  df-ss 3214  df-nul 3497  df-if 3608  df-pw 3658  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-int 3934  df-iun 3977  df-br 4094  df-opab 4156  df-mpt 4157  df-tr 4193  df-id 4396  df-po 4399  df-iso 4400  df-iord 4469  df-on 4471  df-ilim 4472  df-suc 4474  df-iom 4695  df-xp 4737  df-rel 4738  df-cnv 4739  df-co 4740  df-dm 4741  df-rn 4742  df-res 4743  df-ima 4744  df-iota 5293  df-fun 5335  df-fn 5336  df-f 5337  df-f1 5338  df-fo 5339  df-f1o 5340  df-fv 5341  df-isom 5342  df-riota 5981  df-ov 6031  df-oprab 6032  df-mpo 6033  df-1st 6312  df-2nd 6313  df-recs 6514  df-frec 6600  df-map 6862  df-sup 7243  df-inf 7244  df-pnf 8275  df-mnf 8276  df-xr 8277  df-ltxr 8278  df-le 8279  df-sub 8411  df-neg 8412  df-reap 8814  df-ap 8821  df-div 8912  df-inn 9203  df-2 9261  df-3 9262  df-4 9263  df-n0 9462  df-z 9541  df-uz 9817  df-q 9915  df-rp 9950  df-xneg 10068  df-xadd 10069  df-seqfrec 10773  df-exp 10864  df-cj 11482  df-re 11483  df-im 11484  df-rsqrt 11638  df-abs 11639  df-topgen 13423  df-psmet 14639  df-xmet 14640  df-bl 14642  df-mopn 14643  df-top 14809  df-topon 14822  df-bases 14854  df-tx 15064
This theorem is referenced by:  xmettx  15321
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