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Theorem rrx2pnecoorneor 45055
Description: If two different points 𝑋 and 𝑌 in a real Euclidean space of dimension 2 are different, then they are different at least at one coordinate. (Contributed by AV, 26-Feb-2023.)
Hypotheses
Ref Expression
rrx2pnecoorneor.i 𝐼 = {1, 2}
rrx2pnecoorneor.b 𝑃 = (ℝ ↑m 𝐼)
Assertion
Ref Expression
rrx2pnecoorneor ((𝑋𝑃𝑌𝑃𝑋𝑌) → ((𝑋‘1) ≠ (𝑌‘1) ∨ (𝑋‘2) ≠ (𝑌‘2)))

Proof of Theorem rrx2pnecoorneor
Dummy variable 𝑖 is distinct from all other variables.
StepHypRef Expression
1 simpr 488 . . . . . . 7 (((𝑋𝑃𝑌𝑃) ∧ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))) → ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)))
2 rrx2pnecoorneor.i . . . . . . . . 9 𝐼 = {1, 2}
32raleqi 3400 . . . . . . . 8 (∀𝑖𝐼 (𝑋𝑖) = (𝑌𝑖) ↔ ∀𝑖 ∈ {1, 2} (𝑋𝑖) = (𝑌𝑖))
4 1ex 10635 . . . . . . . . 9 1 ∈ V
5 2ex 11711 . . . . . . . . 9 2 ∈ V
6 fveq2 6661 . . . . . . . . . 10 (𝑖 = 1 → (𝑋𝑖) = (𝑋‘1))
7 fveq2 6661 . . . . . . . . . 10 (𝑖 = 1 → (𝑌𝑖) = (𝑌‘1))
86, 7eqeq12d 2840 . . . . . . . . 9 (𝑖 = 1 → ((𝑋𝑖) = (𝑌𝑖) ↔ (𝑋‘1) = (𝑌‘1)))
9 fveq2 6661 . . . . . . . . . 10 (𝑖 = 2 → (𝑋𝑖) = (𝑋‘2))
10 fveq2 6661 . . . . . . . . . 10 (𝑖 = 2 → (𝑌𝑖) = (𝑌‘2))
119, 10eqeq12d 2840 . . . . . . . . 9 (𝑖 = 2 → ((𝑋𝑖) = (𝑌𝑖) ↔ (𝑋‘2) = (𝑌‘2)))
124, 5, 8, 11ralpr 4621 . . . . . . . 8 (∀𝑖 ∈ {1, 2} (𝑋𝑖) = (𝑌𝑖) ↔ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)))
133, 12bitri 278 . . . . . . 7 (∀𝑖𝐼 (𝑋𝑖) = (𝑌𝑖) ↔ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)))
141, 13sylibr 237 . . . . . 6 (((𝑋𝑃𝑌𝑃) ∧ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))) → ∀𝑖𝐼 (𝑋𝑖) = (𝑌𝑖))
15 elmapfn 8425 . . . . . . . . . 10 (𝑋 ∈ (ℝ ↑m 𝐼) → 𝑋 Fn 𝐼)
16 rrx2pnecoorneor.b . . . . . . . . . 10 𝑃 = (ℝ ↑m 𝐼)
1715, 16eleq2s 2934 . . . . . . . . 9 (𝑋𝑃𝑋 Fn 𝐼)
18 elmapfn 8425 . . . . . . . . . 10 (𝑌 ∈ (ℝ ↑m 𝐼) → 𝑌 Fn 𝐼)
1918, 16eleq2s 2934 . . . . . . . . 9 (𝑌𝑃𝑌 Fn 𝐼)
2017, 19anim12i 615 . . . . . . . 8 ((𝑋𝑃𝑌𝑃) → (𝑋 Fn 𝐼𝑌 Fn 𝐼))
2120adantr 484 . . . . . . 7 (((𝑋𝑃𝑌𝑃) ∧ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))) → (𝑋 Fn 𝐼𝑌 Fn 𝐼))
22 eqfnfv 6793 . . . . . . 7 ((𝑋 Fn 𝐼𝑌 Fn 𝐼) → (𝑋 = 𝑌 ↔ ∀𝑖𝐼 (𝑋𝑖) = (𝑌𝑖)))
2321, 22syl 17 . . . . . 6 (((𝑋𝑃𝑌𝑃) ∧ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))) → (𝑋 = 𝑌 ↔ ∀𝑖𝐼 (𝑋𝑖) = (𝑌𝑖)))
2414, 23mpbird 260 . . . . 5 (((𝑋𝑃𝑌𝑃) ∧ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))) → 𝑋 = 𝑌)
2524ex 416 . . . 4 ((𝑋𝑃𝑌𝑃) → (((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)) → 𝑋 = 𝑌))
2625necon3ad 3027 . . 3 ((𝑋𝑃𝑌𝑃) → (𝑋𝑌 → ¬ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))))
27263impia 1114 . 2 ((𝑋𝑃𝑌𝑃𝑋𝑌) → ¬ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)))
28 neorian 3108 . 2 (((𝑋‘1) ≠ (𝑌‘1) ∨ (𝑋‘2) ≠ (𝑌‘2)) ↔ ¬ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)))
2927, 28sylibr 237 1 ((𝑋𝑃𝑌𝑃𝑋𝑌) → ((𝑋‘1) ≠ (𝑌‘1) ∨ (𝑋‘2) ≠ (𝑌‘2)))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 209  wa 399  wo 844  w3a 1084   = wceq 1538  wcel 2115  wne 3014  wral 3133  {cpr 4552   Fn wfn 6338  cfv 6343  (class class class)co 7149  m cmap 8402  cr 10534  1c1 10536  2c2 11689
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 1912  ax-6 1971  ax-7 2016  ax-8 2117  ax-9 2125  ax-10 2146  ax-11 2162  ax-12 2179  ax-ext 2796  ax-sep 5189  ax-nul 5196  ax-pow 5253  ax-pr 5317  ax-un 7455  ax-1cn 10593  ax-addcl 10595
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2071  df-mo 2624  df-eu 2655  df-clab 2803  df-cleq 2817  df-clel 2896  df-nfc 2964  df-ne 3015  df-ral 3138  df-rex 3139  df-rab 3142  df-v 3482  df-sbc 3759  df-csb 3867  df-dif 3922  df-un 3924  df-in 3926  df-ss 3936  df-nul 4277  df-if 4451  df-pw 4524  df-sn 4551  df-pr 4553  df-op 4557  df-uni 4825  df-iun 4907  df-br 5053  df-opab 5115  df-mpt 5133  df-id 5447  df-xp 5548  df-rel 5549  df-cnv 5550  df-co 5551  df-dm 5552  df-rn 5553  df-res 5554  df-ima 5555  df-iota 6302  df-fun 6345  df-fn 6346  df-f 6347  df-fv 6351  df-ov 7152  df-oprab 7153  df-mpo 7154  df-1st 7684  df-2nd 7685  df-map 8404  df-2 11697
This theorem is referenced by:  rrx2pnedifcoorneor  45056  inlinecirc02p  45127
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