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Theorem xmettxlem 14745
Description: Lemma for xmettx 14746. (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 14743 . . . . . . . 8 (𝜑𝑃 ∈ (∞Met‘(𝑋 × 𝑌)))
5 blrn 14648 . . . . . . . 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 14680 . . . . . . . . . . . . . 14 (𝑀 ∈ (∞Met‘𝑋) → 𝐽 ∈ Top)
102, 9syl 14 . . . . . . . . . . . . 13 (𝜑𝐽 ∈ Top)
11 xmettx.k . . . . . . . . . . . . . . 15 𝐾 = (MetOpen‘𝑁)
1211mopntop 14680 . . . . . . . . . . . . . 14 (𝑁 ∈ (∞Met‘𝑌) → 𝐾 ∈ Top)
133, 12syl 14 . . . . . . . . . . . . 13 (𝜑𝐾 ∈ Top)
14 mpoexga 6270 . . . . . . . . . . . . 13 ((𝐽 ∈ Top ∧ 𝐾 ∈ Top) → (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V)
1510, 13, 14syl2anc 411 . . . . . . . . . . . 12 (𝜑 → (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ∈ V)
16 rnexg 4931 . . . . . . . . . . . 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 14297 . . . . . . . . . 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 535 . . . . . . . . . . . . 13 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑧 ∈ (𝑋 × 𝑌))
23 xp1st 6223 . . . . . . . . . . . . 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 536 . . . . . . . . . . . 12 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → 𝑝 ∈ ℝ*)
268blopn 14726 . . . . . . . . . . . 12 ((𝑀 ∈ (∞Met‘𝑋) ∧ (1st𝑧) ∈ 𝑋𝑝 ∈ ℝ*) → ((1st𝑧)(ball‘𝑀)𝑝) ∈ 𝐽)
2721, 24, 25, 26syl3anc 1249 . . . . . . . . . . 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 6224 . . . . . . . . . . . . 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 14726 . . . . . . . . . . . 12 ((𝑁 ∈ (∞Met‘𝑌) ∧ (2nd𝑧) ∈ 𝑌𝑝 ∈ ℝ*) → ((2nd𝑧)(ball‘𝑁)𝑝) ∈ 𝐾)
3228, 30, 25, 31syl3anc 1249 . . . . . . . . . . 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 14744 . . . . . . . . . . . 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 2229 . . . . . . . . . . 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 4677 . . . . . . . . . . . . 13 (𝑟 = ((1st𝑧)(ball‘𝑀)𝑝) → (𝑟 × 𝑠) = (((1st𝑧)(ball‘𝑀)𝑝) × 𝑠))
3736eqeq2d 2208 . . . . . . . . . . . 12 (𝑟 = ((1st𝑧)(ball‘𝑀)𝑝) → (𝑤 = (𝑟 × 𝑠) ↔ 𝑤 = (((1st𝑧)(ball‘𝑀)𝑝) × 𝑠)))
38 xpeq2 4678 . . . . . . . . . . . . 13 (𝑠 = ((2nd𝑧)(ball‘𝑁)𝑝) → (((1st𝑧)(ball‘𝑀)𝑝) × 𝑠) = (((1st𝑧)(ball‘𝑀)𝑝) × ((2nd𝑧)(ball‘𝑁)𝑝)))
3938eqeq2d 2208 . . . . . . . . . . . 12 (𝑠 = ((2nd𝑧)(ball‘𝑁)𝑝) → (𝑤 = (((1st𝑧)(ball‘𝑀)𝑝) × 𝑠) ↔ 𝑤 = (((1st𝑧)(ball‘𝑀)𝑝) × ((2nd𝑧)(ball‘𝑁)𝑝))))
4037, 39rspc2ev 2883 . . . . . . . . . . 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 1249 . . . . . . . . . 10 ((((𝜑𝑤 ∈ ran (ball‘𝑃)) ∧ (𝑧 ∈ (𝑋 × 𝑌) ∧ 𝑝 ∈ ℝ*)) ∧ 𝑤 = (𝑧(ball‘𝑃)𝑝)) → ∃𝑟𝐽𝑠𝐾 𝑤 = (𝑟 × 𝑠))
42 eqid 2196 . . . . . . . . . . . 12 (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) = (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))
4342elrnmpog 6035 . . . . . . . . . . 11 (𝑤 ∈ V → (𝑤 ∈ ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) ↔ ∃𝑟𝐽𝑠𝐾 𝑤 = (𝑟 × 𝑠)))
4443elv 2767 . . . . . . . . . 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 3184 . . . . . . . 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 2622 . . . . . 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 3189 . . 3 (𝜑 → ran (ball‘𝑃) ⊆ (topGen‘ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))))
52 blex 14623 . . . . 5 (𝑃 ∈ (∞Met‘(𝑋 × 𝑌)) → (ball‘𝑃) ∈ V)
53 rnexg 4931 . . . . 5 ((ball‘𝑃) ∈ V → ran (ball‘𝑃) ∈ V)
544, 52, 533syl 17 . . . 4 (𝜑 → ran (ball‘𝑃) ∈ V)
55 tgss3 14314 . . . 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 14678 . . 3 (𝑃 ∈ (∞Met‘(𝑋 × 𝑌)) → 𝐿 = (topGen‘ran (ball‘𝑃)))
604, 59syl 14 . 2 (𝜑𝐿 = (topGen‘ran (ball‘𝑃)))
61 eqid 2196 . . . 4 ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠)) = ran (𝑟𝐽, 𝑠𝐾 ↦ (𝑟 × 𝑠))
6261txval 14491 . . 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 3228 1 (𝜑𝐿 ⊆ (𝐽 ×t 𝐾))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104  wb 105   = wceq 1364  wcel 2167  wrex 2476  Vcvv 2763  wss 3157  {cpr 3623   × cxp 4661  ran crn 4664  cfv 5258  (class class class)co 5922  cmpo 5924  1st c1st 6196  2nd c2nd 6197  supcsup 7048  *cxr 8060   < clt 8061  topGenctg 12925  ∞Metcxmet 14092  ballcbl 14094  MetOpencmopn 14097  Topctop 14233   ×t ctx 14488
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 615  ax-in2 616  ax-io 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-13 2169  ax-14 2170  ax-ext 2178  ax-coll 4148  ax-sep 4151  ax-nul 4159  ax-pow 4207  ax-pr 4242  ax-un 4468  ax-setind 4573  ax-iinf 4624  ax-cnex 7970  ax-resscn 7971  ax-1cn 7972  ax-1re 7973  ax-icn 7974  ax-addcl 7975  ax-addrcl 7976  ax-mulcl 7977  ax-mulrcl 7978  ax-addcom 7979  ax-mulcom 7980  ax-addass 7981  ax-mulass 7982  ax-distr 7983  ax-i2m1 7984  ax-0lt1 7985  ax-1rid 7986  ax-0id 7987  ax-rnegex 7988  ax-precex 7989  ax-cnre 7990  ax-pre-ltirr 7991  ax-pre-ltwlin 7992  ax-pre-lttrn 7993  ax-pre-apti 7994  ax-pre-ltadd 7995  ax-pre-mulgt0 7996  ax-pre-mulext 7997  ax-arch 7998  ax-caucvg 7999
This theorem depends on definitions:  df-bi 117  df-stab 832  df-dc 836  df-3or 981  df-3an 982  df-tru 1367  df-fal 1370  df-nf 1475  df-sb 1777  df-eu 2048  df-mo 2049  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ne 2368  df-nel 2463  df-ral 2480  df-rex 2481  df-reu 2482  df-rmo 2483  df-rab 2484  df-v 2765  df-sbc 2990  df-csb 3085  df-dif 3159  df-un 3161  df-in 3163  df-ss 3170  df-nul 3451  df-if 3562  df-pw 3607  df-sn 3628  df-pr 3629  df-op 3631  df-uni 3840  df-int 3875  df-iun 3918  df-br 4034  df-opab 4095  df-mpt 4096  df-tr 4132  df-id 4328  df-po 4331  df-iso 4332  df-iord 4401  df-on 4403  df-ilim 4404  df-suc 4406  df-iom 4627  df-xp 4669  df-rel 4670  df-cnv 4671  df-co 4672  df-dm 4673  df-rn 4674  df-res 4675  df-ima 4676  df-iota 5219  df-fun 5260  df-fn 5261  df-f 5262  df-f1 5263  df-fo 5264  df-f1o 5265  df-fv 5266  df-isom 5267  df-riota 5877  df-ov 5925  df-oprab 5926  df-mpo 5927  df-1st 6198  df-2nd 6199  df-recs 6363  df-frec 6449  df-map 6709  df-sup 7050  df-inf 7051  df-pnf 8063  df-mnf 8064  df-xr 8065  df-ltxr 8066  df-le 8067  df-sub 8199  df-neg 8200  df-reap 8602  df-ap 8609  df-div 8700  df-inn 8991  df-2 9049  df-3 9050  df-4 9051  df-n0 9250  df-z 9327  df-uz 9602  df-q 9694  df-rp 9729  df-xneg 9847  df-xadd 9848  df-seqfrec 10540  df-exp 10631  df-cj 11007  df-re 11008  df-im 11009  df-rsqrt 11163  df-abs 11164  df-topgen 12931  df-psmet 14099  df-xmet 14100  df-bl 14102  df-mopn 14103  df-top 14234  df-topon 14247  df-bases 14279  df-tx 14489
This theorem is referenced by:  xmettx  14746
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