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Theorem rrx2pnecoorneor 45949
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 484 . . . . . . 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 3337 . . . . . . . 8 (∀𝑖𝐼 (𝑋𝑖) = (𝑌𝑖) ↔ ∀𝑖 ∈ {1, 2} (𝑋𝑖) = (𝑌𝑖))
4 1ex 10902 . . . . . . . . 9 1 ∈ V
5 2ex 11980 . . . . . . . . 9 2 ∈ V
6 fveq2 6756 . . . . . . . . . 10 (𝑖 = 1 → (𝑋𝑖) = (𝑋‘1))
7 fveq2 6756 . . . . . . . . . 10 (𝑖 = 1 → (𝑌𝑖) = (𝑌‘1))
86, 7eqeq12d 2754 . . . . . . . . 9 (𝑖 = 1 → ((𝑋𝑖) = (𝑌𝑖) ↔ (𝑋‘1) = (𝑌‘1)))
9 fveq2 6756 . . . . . . . . . 10 (𝑖 = 2 → (𝑋𝑖) = (𝑋‘2))
10 fveq2 6756 . . . . . . . . . 10 (𝑖 = 2 → (𝑌𝑖) = (𝑌‘2))
119, 10eqeq12d 2754 . . . . . . . . 9 (𝑖 = 2 → ((𝑋𝑖) = (𝑌𝑖) ↔ (𝑋‘2) = (𝑌‘2)))
124, 5, 8, 11ralpr 4633 . . . . . . . 8 (∀𝑖 ∈ {1, 2} (𝑋𝑖) = (𝑌𝑖) ↔ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)))
133, 12bitri 274 . . . . . . 7 (∀𝑖𝐼 (𝑋𝑖) = (𝑌𝑖) ↔ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)))
141, 13sylibr 233 . . . . . 6 (((𝑋𝑃𝑌𝑃) ∧ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))) → ∀𝑖𝐼 (𝑋𝑖) = (𝑌𝑖))
15 elmapfn 8611 . . . . . . . . . 10 (𝑋 ∈ (ℝ ↑m 𝐼) → 𝑋 Fn 𝐼)
16 rrx2pnecoorneor.b . . . . . . . . . 10 𝑃 = (ℝ ↑m 𝐼)
1715, 16eleq2s 2857 . . . . . . . . 9 (𝑋𝑃𝑋 Fn 𝐼)
18 elmapfn 8611 . . . . . . . . . 10 (𝑌 ∈ (ℝ ↑m 𝐼) → 𝑌 Fn 𝐼)
1918, 16eleq2s 2857 . . . . . . . . 9 (𝑌𝑃𝑌 Fn 𝐼)
2017, 19anim12i 612 . . . . . . . 8 ((𝑋𝑃𝑌𝑃) → (𝑋 Fn 𝐼𝑌 Fn 𝐼))
2120adantr 480 . . . . . . 7 (((𝑋𝑃𝑌𝑃) ∧ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))) → (𝑋 Fn 𝐼𝑌 Fn 𝐼))
22 eqfnfv 6891 . . . . . . 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 256 . . . . 5 (((𝑋𝑃𝑌𝑃) ∧ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))) → 𝑋 = 𝑌)
2524ex 412 . . . 4 ((𝑋𝑃𝑌𝑃) → (((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)) → 𝑋 = 𝑌))
2625necon3ad 2955 . . 3 ((𝑋𝑃𝑌𝑃) → (𝑋𝑌 → ¬ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))))
27263impia 1115 . 2 ((𝑋𝑃𝑌𝑃𝑋𝑌) → ¬ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)))
28 neorian 3038 . 2 (((𝑋‘1) ≠ (𝑌‘1) ∨ (𝑋‘2) ≠ (𝑌‘2)) ↔ ¬ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)))
2927, 28sylibr 233 1 ((𝑋𝑃𝑌𝑃𝑋𝑌) → ((𝑋‘1) ≠ (𝑌‘1) ∨ (𝑋‘2) ≠ (𝑌‘2)))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 205  wa 395  wo 843  w3a 1085   = wceq 1539  wcel 2108  wne 2942  wral 3063  {cpr 4560   Fn wfn 6413  cfv 6418  (class class class)co 7255  m cmap 8573  cr 10801  1c1 10803  2c2 11958
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566  ax-1cn 10860  ax-addcl 10862
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-ral 3068  df-rex 3069  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-op 4565  df-uni 4837  df-iun 4923  df-br 5071  df-opab 5133  df-mpt 5154  df-id 5480  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-fv 6426  df-ov 7258  df-oprab 7259  df-mpo 7260  df-1st 7804  df-2nd 7805  df-map 8575  df-2 11966
This theorem is referenced by:  rrx2pnedifcoorneor  45950  inlinecirc02p  46021
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