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Mirrors > Home > MPE Home > Th. List > Mathboxes > rrx2pnedifcoorneor | Structured version Visualization version GIF version |
Description: If two different points 𝑋 and 𝑌 in a real Euclidean space of dimension 2 are different, then at least one difference of two corresponding coordinates is not 0. (Contributed by AV, 26-Feb-2023.) |
Ref | Expression |
---|---|
rrx2pnecoorneor.i | ⊢ 𝐼 = {1, 2} |
rrx2pnecoorneor.b | ⊢ 𝑃 = (ℝ ↑m 𝐼) |
rrx2pnedifcoorneor.a | ⊢ 𝐴 = ((𝑌‘1) − (𝑋‘1)) |
rrx2pnedifcoorneor.b | ⊢ 𝐵 = ((𝑌‘2) − (𝑋‘2)) |
Ref | Expression |
---|---|
rrx2pnedifcoorneor | ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌) → (𝐴 ≠ 0 ∨ 𝐵 ≠ 0)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rrx2pnecoorneor.i | . . 3 ⊢ 𝐼 = {1, 2} | |
2 | rrx2pnecoorneor.b | . . 3 ⊢ 𝑃 = (ℝ ↑m 𝐼) | |
3 | 1, 2 | rrx2pnecoorneor 46030 | . 2 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌) → ((𝑋‘1) ≠ (𝑌‘1) ∨ (𝑋‘2) ≠ (𝑌‘2))) |
4 | rrx2pnedifcoorneor.a | . . . . . 6 ⊢ 𝐴 = ((𝑌‘1) − (𝑋‘1)) | |
5 | 4 | neeq1i 3010 | . . . . 5 ⊢ (𝐴 ≠ 0 ↔ ((𝑌‘1) − (𝑋‘1)) ≠ 0) |
6 | rrx2pnedifcoorneor.b | . . . . . 6 ⊢ 𝐵 = ((𝑌‘2) − (𝑋‘2)) | |
7 | 6 | neeq1i 3010 | . . . . 5 ⊢ (𝐵 ≠ 0 ↔ ((𝑌‘2) − (𝑋‘2)) ≠ 0) |
8 | 5, 7 | orbi12i 912 | . . . 4 ⊢ ((𝐴 ≠ 0 ∨ 𝐵 ≠ 0) ↔ (((𝑌‘1) − (𝑋‘1)) ≠ 0 ∨ ((𝑌‘2) − (𝑋‘2)) ≠ 0)) |
9 | 1, 2 | rrx2pxel 46026 | . . . . . . . . 9 ⊢ (𝑌 ∈ 𝑃 → (𝑌‘1) ∈ ℝ) |
10 | 9 | recnd 11004 | . . . . . . . 8 ⊢ (𝑌 ∈ 𝑃 → (𝑌‘1) ∈ ℂ) |
11 | 1, 2 | rrx2pxel 46026 | . . . . . . . . 9 ⊢ (𝑋 ∈ 𝑃 → (𝑋‘1) ∈ ℝ) |
12 | 11 | recnd 11004 | . . . . . . . 8 ⊢ (𝑋 ∈ 𝑃 → (𝑋‘1) ∈ ℂ) |
13 | subeq0 11247 | . . . . . . . 8 ⊢ (((𝑌‘1) ∈ ℂ ∧ (𝑋‘1) ∈ ℂ) → (((𝑌‘1) − (𝑋‘1)) = 0 ↔ (𝑌‘1) = (𝑋‘1))) | |
14 | 10, 12, 13 | syl2anr 597 | . . . . . . 7 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) → (((𝑌‘1) − (𝑋‘1)) = 0 ↔ (𝑌‘1) = (𝑋‘1))) |
15 | 14 | necon3bid 2990 | . . . . . 6 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) → (((𝑌‘1) − (𝑋‘1)) ≠ 0 ↔ (𝑌‘1) ≠ (𝑋‘1))) |
16 | 1, 2 | rrx2pyel 46027 | . . . . . . . . 9 ⊢ (𝑌 ∈ 𝑃 → (𝑌‘2) ∈ ℝ) |
17 | 16 | recnd 11004 | . . . . . . . 8 ⊢ (𝑌 ∈ 𝑃 → (𝑌‘2) ∈ ℂ) |
18 | 1, 2 | rrx2pyel 46027 | . . . . . . . . 9 ⊢ (𝑋 ∈ 𝑃 → (𝑋‘2) ∈ ℝ) |
19 | 18 | recnd 11004 | . . . . . . . 8 ⊢ (𝑋 ∈ 𝑃 → (𝑋‘2) ∈ ℂ) |
20 | subeq0 11247 | . . . . . . . 8 ⊢ (((𝑌‘2) ∈ ℂ ∧ (𝑋‘2) ∈ ℂ) → (((𝑌‘2) − (𝑋‘2)) = 0 ↔ (𝑌‘2) = (𝑋‘2))) | |
21 | 17, 19, 20 | syl2anr 597 | . . . . . . 7 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) → (((𝑌‘2) − (𝑋‘2)) = 0 ↔ (𝑌‘2) = (𝑋‘2))) |
22 | 21 | necon3bid 2990 | . . . . . 6 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) → (((𝑌‘2) − (𝑋‘2)) ≠ 0 ↔ (𝑌‘2) ≠ (𝑋‘2))) |
23 | 15, 22 | orbi12d 916 | . . . . 5 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) → ((((𝑌‘1) − (𝑋‘1)) ≠ 0 ∨ ((𝑌‘2) − (𝑋‘2)) ≠ 0) ↔ ((𝑌‘1) ≠ (𝑋‘1) ∨ (𝑌‘2) ≠ (𝑋‘2)))) |
24 | necom 2999 | . . . . . 6 ⊢ ((𝑌‘1) ≠ (𝑋‘1) ↔ (𝑋‘1) ≠ (𝑌‘1)) | |
25 | necom 2999 | . . . . . 6 ⊢ ((𝑌‘2) ≠ (𝑋‘2) ↔ (𝑋‘2) ≠ (𝑌‘2)) | |
26 | 24, 25 | orbi12i 912 | . . . . 5 ⊢ (((𝑌‘1) ≠ (𝑋‘1) ∨ (𝑌‘2) ≠ (𝑋‘2)) ↔ ((𝑋‘1) ≠ (𝑌‘1) ∨ (𝑋‘2) ≠ (𝑌‘2))) |
27 | 23, 26 | bitrdi 287 | . . . 4 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) → ((((𝑌‘1) − (𝑋‘1)) ≠ 0 ∨ ((𝑌‘2) − (𝑋‘2)) ≠ 0) ↔ ((𝑋‘1) ≠ (𝑌‘1) ∨ (𝑋‘2) ≠ (𝑌‘2)))) |
28 | 8, 27 | syl5bb 283 | . . 3 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) → ((𝐴 ≠ 0 ∨ 𝐵 ≠ 0) ↔ ((𝑋‘1) ≠ (𝑌‘1) ∨ (𝑋‘2) ≠ (𝑌‘2)))) |
29 | 28 | 3adant3 1131 | . 2 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌) → ((𝐴 ≠ 0 ∨ 𝐵 ≠ 0) ↔ ((𝑋‘1) ≠ (𝑌‘1) ∨ (𝑋‘2) ≠ (𝑌‘2)))) |
30 | 3, 29 | mpbird 256 | 1 ⊢ ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑋 ≠ 𝑌) → (𝐴 ≠ 0 ∨ 𝐵 ≠ 0)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ∨ wo 844 ∧ w3a 1086 = wceq 1542 ∈ wcel 2110 ≠ wne 2945 {cpr 4569 ‘cfv 6432 (class class class)co 7271 ↑m cmap 8598 ℂcc 10870 ℝcr 10871 0cc0 10872 1c1 10873 − cmin 11205 2c2 12028 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7582 ax-resscn 10929 ax-1cn 10930 ax-icn 10931 ax-addcl 10932 ax-addrcl 10933 ax-mulcl 10934 ax-mulrcl 10935 ax-mulcom 10936 ax-addass 10937 ax-mulass 10938 ax-distr 10939 ax-i2m1 10940 ax-1ne0 10941 ax-1rid 10942 ax-rnegex 10943 ax-rrecex 10944 ax-cnre 10945 ax-pre-lttri 10946 ax-pre-lttrn 10947 ax-pre-ltadd 10948 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-nel 3052 df-ral 3071 df-rex 3072 df-reu 3073 df-rab 3075 df-v 3433 df-sbc 3721 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4846 df-iun 4932 df-br 5080 df-opab 5142 df-mpt 5163 df-id 5490 df-po 5504 df-so 5505 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-iota 6390 df-fun 6434 df-fn 6435 df-f 6436 df-f1 6437 df-fo 6438 df-f1o 6439 df-fv 6440 df-riota 7228 df-ov 7274 df-oprab 7275 df-mpo 7276 df-1st 7824 df-2nd 7825 df-er 8481 df-map 8600 df-en 8717 df-dom 8718 df-sdom 8719 df-pnf 11012 df-mnf 11013 df-ltxr 11015 df-sub 11207 df-2 12036 |
This theorem is referenced by: rrx2pnedifcoorneorr 46032 |
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