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Theorem xmettxlem 13149
Description: Lemma for xmettx 13150. (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 13147 . . . . . . . 8 (𝜑𝑃 ∈ (∞Met‘(𝑋 × 𝑌)))
5 blrn 13052 . . . . . . . 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 294 . . . . . 6 ((𝜑𝑤 ∈ ran (ball‘𝑃)) → ∃𝑧 ∈ (𝑋 × 𝑌)∃𝑝 ∈ ℝ* 𝑤 = (𝑧(ball‘𝑃)𝑝))
8 xmettx.j . . . . . . . . . . . . . . 15 𝐽 = (MetOpen‘𝑀)
98mopntop 13084 . . . . . . . . . . . . . 14 (𝑀 ∈ (∞Met‘𝑋) → 𝐽 ∈ Top)
102, 9syl 14 . . . . . . . . . . . . 13 (𝜑𝐽 ∈ Top)
11 xmettx.k . . . . . . . . . . . . . . 15 𝐾 = (MetOpen‘𝑁)
1211mopntop 13084 . . . . . . . . . . . . . 14 (𝑁 ∈ (∞Met‘𝑌) → 𝐾 ∈ Top)
133, 12syl 14 . . . . . . . . . . . . 13 (𝜑𝐾 ∈ Top)
14 mpoexga 6180 . . . . . . . . . . . . 13 ((𝐽 ∈ Top ∧ 𝐾 ∈ Top) → (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V)
1510, 13, 14syl2anc 409 . . . . . . . . . . . 12 (𝜑 → (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V)
16 rnexg 4869 . . . . . . . . . . . 12 ((𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V → ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V)
1715, 16syl 14 . . . . . . . . . . 11 (𝜑 → ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V)
1817ad3antrrr 484 . . . . . . . . . 10 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V)
19 bastg 12701 . . . . . . . . . 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 484 . . . . . . . . . . . 12 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑀 ∈ (∞Met‘𝑋))
22 simplrl 525 . . . . . . . . . . . . 13 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑧 ∈ (𝑋 × 𝑌))
23 xp1st 6133 . . . . . . . . . . . . 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 526 . . . . . . . . . . . 12 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑝 ∈ ℝ*)
268blopn 13130 . . . . . . . . . . . 12 ((𝑀 ∈ (∞Met‘𝑋) ∧ (1st𝑧) ∈ 𝑋𝑝 ∈ ℝ*) → ((1st𝑧)(ball‘𝑀)𝑝) ∈ 𝐽)
2721, 24, 25, 26syl3anc 1228 . . . . . . . . . . 11 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → ((1st𝑧)(ball‘𝑀)𝑝) ∈ 𝐽)
283ad3antrrr 484 . . . . . . . . . . . 12 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑁 ∈ (∞Met‘𝑌))
29 xp2nd 6134 . . . . . . . . . . . . 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 13130 . . . . . . . . . . . 12 ((𝑁 ∈ (∞Met‘𝑌) ∧ (2nd𝑧) ∈ 𝑌𝑝 ∈ ℝ*) → ((2nd𝑧)(ball‘𝑁)𝑝) ∈ 𝐾)
3228, 30, 25, 31syl3anc 1228 . . . . . . . . . . 11 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → ((2nd𝑧)(ball‘𝑁)𝑝) ∈ 𝐾)
33 simpr 109 . . . . . . . . . . . 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 13148 . . . . . . . . . . . 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 2198 . . . . . . . . . . 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 4618 . . . . . . . . . . . . 13 (𝑟 = ((1st𝑧)(ball‘𝑀)𝑝) → (𝑟 × 𝑠) = (((1st𝑧)(ball‘𝑀)𝑝) × 𝑠))
3736eqeq2d 2177 . . . . . . . . . . . 12 (𝑟 = ((1st𝑧)(ball‘𝑀)𝑝) → (𝑤 = (𝑟 × 𝑠) ↔ 𝑤 = (((1st𝑧)(ball‘𝑀)𝑝) × 𝑠)))
38 xpeq2 4619 . . . . . . . . . . . . 13 (𝑠 = ((2nd𝑧)(ball‘𝑁)𝑝) → (((1st𝑧)(ball‘𝑀)𝑝) × 𝑠) = (((1st𝑧)(ball‘𝑀)𝑝) × ((2nd𝑧)(ball‘𝑁)𝑝)))
3938eqeq2d 2177 . . . . . . . . . . . 12 (𝑠 = ((2nd𝑧)(ball‘𝑁)𝑝) → (𝑤 = (((1st𝑧)(ball‘𝑀)𝑝) × 𝑠) ↔ 𝑤 = (((1st𝑧)(ball‘𝑀)𝑝) × ((2nd𝑧)(ball‘𝑁)𝑝))))
4037, 39rspc2ev 2845 . . . . . . . . . . 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 1228 . . . . . . . . . 10 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → ∃𝑟𝐽𝑠𝐾 𝑤 = (𝑟 × 𝑠))
42 eqid 2165 . . . . . . . . . . . 12 (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) = (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))
4342elrnmpog 5954 . . . . . . . . . . 11 (𝑤 ∈ V → (𝑤 ∈ ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ↔ ∃𝑟𝐽𝑠𝐾 𝑤 = (𝑟 × 𝑠)))
4443elv 2730 . . . . . . . . . 10 (𝑤 ∈ ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ↔ ∃𝑟𝐽𝑠𝐾 𝑤 = (𝑟 × 𝑠))
4541, 44sylibr 133 . . . . . . . . 9 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑤 ∈ ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)))
4620, 45sseldd 3143 . . . . . . . 8 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑤 ∈ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))))
4746ex 114 . . . . . . 7 (((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) → (𝑤 = (𝑧(ball‘𝑃)𝑝) → 𝑤 ∈ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)))))
4847rexlimdvva 2591 . . . . . 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 114 . . . 4 (𝜑 → (𝑤 ∈ ran (ball‘𝑃) → 𝑤 ∈ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)))))
5150ssrdv 3148 . . 3 (𝜑 → ran (ball‘𝑃) ⊆ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))))
52 blex 13027 . . . . 5 (𝑃 ∈ (∞Met‘(𝑋 × 𝑌)) → (ball‘𝑃) ∈ V)
53 rnexg 4869 . . . . 5 ((ball‘𝑃) ∈ V → ran (ball‘𝑃) ∈ V)
544, 52, 533syl 17 . . . 4 (𝜑 → ran (ball‘𝑃) ∈ V)
55 tgss3 12718 . . . 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 409 . . 3 (𝜑 → ((topGen‘ran (ball‘𝑃)) ⊆ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))) ↔ ran (ball‘𝑃) ⊆ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)))))
5751, 56mpbird 166 . 2 (𝜑 → (topGen‘ran (ball‘𝑃)) ⊆ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))))
58 xmettx.l . . . 4 𝐿 = (MetOpen‘𝑃)
5958mopnval 13082 . . 3 (𝑃 ∈ (∞Met‘(𝑋 × 𝑌)) → 𝐿 = (topGen‘ran (ball‘𝑃)))
604, 59syl 14 . 2 (𝜑𝐿 = (topGen‘ran (ball‘𝑃)))
61 eqid 2165 . . . 4 ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) = ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))
6261txval 12895 . . 3 ((𝐽 ∈ Top ∧ 𝐾 ∈ Top) → (𝐽 ×t 𝐾) = (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))))
6310, 13, 62syl2anc 409 . 2 (𝜑 → (𝐽 ×t 𝐾) = (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))))
6457, 60, 633sstr4d 3187 1 (𝜑𝐿 ⊆ (𝐽 ×t 𝐾))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 103  wb 104   = wceq 1343  wcel 2136  wrex 2445  Vcvv 2726  wss 3116  {cpr 3577   × cxp 4602  ran crn 4605  cfv 5188  (class class class)co 5842  cmpo 5844  1st c1st 6106  2nd c2nd 6107  supcsup 6947  *cxr 7932   < clt 7933  topGenctg 12571  ∞Metcxmet 12620  ballcbl 12622  MetOpencmopn 12625  Topctop 12635   ×t ctx 12892
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 604  ax-in2 605  ax-io 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-13 2138  ax-14 2139  ax-ext 2147  ax-coll 4097  ax-sep 4100  ax-nul 4108  ax-pow 4153  ax-pr 4187  ax-un 4411  ax-setind 4514  ax-iinf 4565  ax-cnex 7844  ax-resscn 7845  ax-1cn 7846  ax-1re 7847  ax-icn 7848  ax-addcl 7849  ax-addrcl 7850  ax-mulcl 7851  ax-mulrcl 7852  ax-addcom 7853  ax-mulcom 7854  ax-addass 7855  ax-mulass 7856  ax-distr 7857  ax-i2m1 7858  ax-0lt1 7859  ax-1rid 7860  ax-0id 7861  ax-rnegex 7862  ax-precex 7863  ax-cnre 7864  ax-pre-ltirr 7865  ax-pre-ltwlin 7866  ax-pre-lttrn 7867  ax-pre-apti 7868  ax-pre-ltadd 7869  ax-pre-mulgt0 7870  ax-pre-mulext 7871  ax-arch 7872  ax-caucvg 7873
This theorem depends on definitions:  df-bi 116  df-stab 821  df-dc 825  df-3or 969  df-3an 970  df-tru 1346  df-fal 1349  df-nf 1449  df-sb 1751  df-eu 2017  df-mo 2018  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2297  df-ne 2337  df-nel 2432  df-ral 2449  df-rex 2450  df-reu 2451  df-rmo 2452  df-rab 2453  df-v 2728  df-sbc 2952  df-csb 3046  df-dif 3118  df-un 3120  df-in 3122  df-ss 3129  df-nul 3410  df-if 3521  df-pw 3561  df-sn 3582  df-pr 3583  df-op 3585  df-uni 3790  df-int 3825  df-iun 3868  df-br 3983  df-opab 4044  df-mpt 4045  df-tr 4081  df-id 4271  df-po 4274  df-iso 4275  df-iord 4344  df-on 4346  df-ilim 4347  df-suc 4349  df-iom 4568  df-xp 4610  df-rel 4611  df-cnv 4612  df-co 4613  df-dm 4614  df-rn 4615  df-res 4616  df-ima 4617  df-iota 5153  df-fun 5190  df-fn 5191  df-f 5192  df-f1 5193  df-fo 5194  df-f1o 5195  df-fv 5196  df-isom 5197  df-riota 5798  df-ov 5845  df-oprab 5846  df-mpo 5847  df-1st 6108  df-2nd 6109  df-recs 6273  df-frec 6359  df-map 6616  df-sup 6949  df-inf 6950  df-pnf 7935  df-mnf 7936  df-xr 7937  df-ltxr 7938  df-le 7939  df-sub 8071  df-neg 8072  df-reap 8473  df-ap 8480  df-div 8569  df-inn 8858  df-2 8916  df-3 8917  df-4 8918  df-n0 9115  df-z 9192  df-uz 9467  df-q 9558  df-rp 9590  df-xneg 9708  df-xadd 9709  df-seqfrec 10381  df-exp 10455  df-cj 10784  df-re 10785  df-im 10786  df-rsqrt 10940  df-abs 10941  df-topgen 12577  df-psmet 12627  df-xmet 12628  df-bl 12630  df-mopn 12631  df-top 12636  df-topon 12649  df-bases 12681  df-tx 12893
This theorem is referenced by:  xmettx  13150
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