Theorem rrx2pnecoorneor 49285

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	⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌) → ((𝑋‘1) ≠ (𝑌‘1) ∨ (𝑋‘2) ≠ (𝑌‘2)))

Proof of Theorem rrx2pnecoorneor

Dummy variable 𝑖 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		rrx2pnecoorneor.i	. . . . . . . . 9 ⊢ 𝐼 = {1, 2}
2	1	raleqi 3312	. . . . . . . 8 ⊢ (∀𝑖 ∈ 𝐼 (𝑋‘𝑖) = (𝑌‘𝑖) ↔ ∀𝑖 ∈ {1, 2} (𝑋‘𝑖) = (𝑌‘𝑖))
3		1ex 11166	. . . . . . . . 9 ⊢ 1 ∈ V
4		2ex 12285	. . . . . . . . 9 ⊢ 2 ∈ V
5		fveq2 6856	. . . . . . . . . 10 ⊢ (𝑖 = 1 → (𝑋‘𝑖) = (𝑋‘1))
6		fveq2 6856	. . . . . . . . . 10 ⊢ (𝑖 = 1 → (𝑌‘𝑖) = (𝑌‘1))
7	5, 6	eqeq12d 2772	. . . . . . . . 9 ⊢ (𝑖 = 1 → ((𝑋‘𝑖) = (𝑌‘𝑖) ↔ (𝑋‘1) = (𝑌‘1)))
8		fveq2 6856	. . . . . . . . . 10 ⊢ (𝑖 = 2 → (𝑋‘𝑖) = (𝑋‘2))
9		fveq2 6856	. . . . . . . . . 10 ⊢ (𝑖 = 2 → (𝑌‘𝑖) = (𝑌‘2))
10	8, 9	eqeq12d 2772	. . . . . . . . 9 ⊢ (𝑖 = 2 → ((𝑋‘𝑖) = (𝑌‘𝑖) ↔ (𝑋‘2) = (𝑌‘2)))
11	3, 4, 7, 10	ralpr 4653	. . . . . . . 8 ⊢ (∀𝑖 ∈ {1, 2} (𝑋‘𝑖) = (𝑌‘𝑖) ↔ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)))
12	2, 11	bitri 277	. . . . . . 7 ⊢ (∀𝑖 ∈ 𝐼 (𝑋‘𝑖) = (𝑌‘𝑖) ↔ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)))
13	12	bilanri 509	. . . . . 6 ⊢ (((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) ∧ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))) → ∀𝑖 ∈ 𝐼 (𝑋‘𝑖) = (𝑌‘𝑖))
14		elmapfn 8835	. . . . . . . . . 10 ⊢ (𝑋 ∈ (ℝ ↑m 𝐼) → 𝑋 Fn 𝐼)
15		rrx2pnecoorneor.b	. . . . . . . . . 10 ⊢ 𝑃 = (ℝ ↑m 𝐼)
16	14, 15	eleq2s 2874	. . . . . . . . 9 ⊢ (𝑋 ∈ 𝑃 → 𝑋 Fn 𝐼)
17		elmapfn 8835	. . . . . . . . . 10 ⊢ (𝑌 ∈ (ℝ ↑m 𝐼) → 𝑌 Fn 𝐼)
18	17, 15	eleq2s 2874	. . . . . . . . 9 ⊢ (𝑌 ∈ 𝑃 → 𝑌 Fn 𝐼)
19	16, 18	anim12i 621	. . . . . . . 8 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) → (𝑋 Fn 𝐼 ∧ 𝑌 Fn 𝐼))
20	19	adantr 483	. . . . . . 7 ⊢ (((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) ∧ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))) → (𝑋 Fn 𝐼 ∧ 𝑌 Fn 𝐼))
21		eqfnfv 7000	. . . . . . 7 ⊢ ((𝑋 Fn 𝐼 ∧ 𝑌 Fn 𝐼) → (𝑋 = 𝑌 ↔ ∀𝑖 ∈ 𝐼 (𝑋‘𝑖) = (𝑌‘𝑖)))
22	20, 21	syl 17	. . . . . 6 ⊢ (((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) ∧ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))) → (𝑋 = 𝑌 ↔ ∀𝑖 ∈ 𝐼 (𝑋‘𝑖) = (𝑌‘𝑖)))
23	13, 22	mpbird 259	. . . . 5 ⊢ (((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) ∧ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))) → 𝑋 = 𝑌)
24	23	ex 415	. . . 4 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) → (((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)) → 𝑋 = 𝑌))
25	24	necon3ad 2964	. . 3 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) → (𝑋 ≠ 𝑌 → ¬ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2))))
26	25	3impia 1126	. 2 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌) → ¬ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)))
27		neorian 3046	. 2 ⊢ (((𝑋‘1) ≠ (𝑌‘1) ∨ (𝑋‘2) ≠ (𝑌‘2)) ↔ ¬ ((𝑋‘1) = (𝑌‘1) ∧ (𝑋‘2) = (𝑌‘2)))
28	26, 27	sylibr 236	1 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌) → ((𝑋‘1) ≠ (𝑌‘1) ∨ (𝑋‘2) ≠ (𝑌‘2)))

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 208   ∧ wa 398   ∨ wo 856   ∧ w3a 1095   = wceq 1554   ∈ wcel 2136   ≠ wne 2951  ∀wral 3070  {cpr 4578   Fn wfn 6505  ‘cfv 6510  (class class class)co 7385   ↑_m cmap 8796  ℝcr 11062  1c1 11064  2c2 12262

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1809  ax-4 1823  ax-5 1924  ax-6 1981  ax-7 2022  ax-8 2138  ax-9 2146  ax-10 2169  ax-11 2185  ax-12 2206  ax-ext 2728  ax-sep 5240  ax-nul 5250  ax-pow 5316  ax-pr 5384  ax-un 7707  ax-1cn 11121  ax-addcl 11123

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 857  df-3an 1097  df-tru 1557  df-fal 1567  df-ex 1794  df-nf 1798  df-sb 2085  df-mo 2560  df-eu 2590  df-clab 2735  df-cleq 2748  df-clel 2831  df-nfc 2905  df-ne 2952  df-ral 3071  df-rex 3081  df-rab 3409  df-v 3450  df-sbc 3740  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4281  df-if 4475  df-pw 4551  df-sn 4577  df-pr 4579  df-op 4583  df-uni 4860  df-iun 4945  df-br 5095  df-opab 5157  df-mpt 5176  df-id 5535  df-xp 5646  df-rel 5647  df-cnv 5648  df-co 5649  df-dm 5650  df-rn 5651  df-res 5652  df-ima 5653  df-iota 6466  df-fun 6512  df-fn 6513  df-f 6514  df-fv 6518  df-ov 7388  df-oprab 7389  df-mpo 7390  df-1st 7959  df-2nd 7960  df-map 8798  df-2 12270

This theorem is referenced by:  rrx2pnedifcoorneor  49286  inlinecirc02p  49357