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Mirrors > Home > MPE Home > Th. List > Mathboxes > addrcom | Structured version Visualization version GIF version |
Description: Vector addition is commutative. (Contributed by Andrew Salmon, 28-Jan-2012.) |
Ref | Expression |
---|---|
addrcom | ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴+𝑟𝐵) = (𝐵+𝑟𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | addrfn 42303 | . 2 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴+𝑟𝐵) Fn ℝ) | |
2 | addrfn 42303 | . . 3 ⊢ ((𝐵 ∈ 𝐷 ∧ 𝐴 ∈ 𝐶) → (𝐵+𝑟𝐴) Fn ℝ) | |
3 | 2 | ancoms 460 | . 2 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐵+𝑟𝐴) Fn ℝ) |
4 | addcomgi 42287 | . . . . . 6 ⊢ ((𝐴‘𝑥) + (𝐵‘𝑥)) = ((𝐵‘𝑥) + (𝐴‘𝑥)) | |
5 | addrfv 42300 | . . . . . 6 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷 ∧ 𝑥 ∈ ℝ) → ((𝐴+𝑟𝐵)‘𝑥) = ((𝐴‘𝑥) + (𝐵‘𝑥))) | |
6 | addrfv 42300 | . . . . . . 7 ⊢ ((𝐵 ∈ 𝐷 ∧ 𝐴 ∈ 𝐶 ∧ 𝑥 ∈ ℝ) → ((𝐵+𝑟𝐴)‘𝑥) = ((𝐵‘𝑥) + (𝐴‘𝑥))) | |
7 | 6 | 3com12 1123 | . . . . . 6 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷 ∧ 𝑥 ∈ ℝ) → ((𝐵+𝑟𝐴)‘𝑥) = ((𝐵‘𝑥) + (𝐴‘𝑥))) |
8 | 4, 5, 7 | 3eqtr4a 2802 | . . . . 5 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷 ∧ 𝑥 ∈ ℝ) → ((𝐴+𝑟𝐵)‘𝑥) = ((𝐵+𝑟𝐴)‘𝑥)) |
9 | 8 | 3expia 1121 | . . . 4 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝑥 ∈ ℝ → ((𝐴+𝑟𝐵)‘𝑥) = ((𝐵+𝑟𝐴)‘𝑥))) |
10 | 9 | ralrimiv 3139 | . . 3 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → ∀𝑥 ∈ ℝ ((𝐴+𝑟𝐵)‘𝑥) = ((𝐵+𝑟𝐴)‘𝑥)) |
11 | eqfnfv 6941 | . . 3 ⊢ (((𝐴+𝑟𝐵) Fn ℝ ∧ (𝐵+𝑟𝐴) Fn ℝ) → ((𝐴+𝑟𝐵) = (𝐵+𝑟𝐴) ↔ ∀𝑥 ∈ ℝ ((𝐴+𝑟𝐵)‘𝑥) = ((𝐵+𝑟𝐴)‘𝑥))) | |
12 | 10, 11 | syl5ibrcom 247 | . 2 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (((𝐴+𝑟𝐵) Fn ℝ ∧ (𝐵+𝑟𝐴) Fn ℝ) → (𝐴+𝑟𝐵) = (𝐵+𝑟𝐴))) |
13 | 1, 3, 12 | mp2and 697 | 1 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴+𝑟𝐵) = (𝐵+𝑟𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 397 ∧ w3a 1087 = wceq 1539 ∈ wcel 2104 ∀wral 3062 Fn wfn 6453 ‘cfv 6458 (class class class)co 7307 ℝcr 10920 + caddc 10924 +𝑟cplusr 42288 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2707 ax-rep 5218 ax-sep 5232 ax-nul 5239 ax-pow 5297 ax-pr 5361 ax-un 7620 ax-cnex 10977 ax-resscn 10978 ax-1cn 10979 ax-icn 10980 ax-addcl 10981 ax-addrcl 10982 ax-mulcl 10983 ax-mulrcl 10984 ax-mulcom 10985 ax-addass 10986 ax-mulass 10987 ax-distr 10988 ax-i2m1 10989 ax-1ne0 10990 ax-1rid 10991 ax-rnegex 10992 ax-rrecex 10993 ax-cnre 10994 ax-pre-lttri 10995 ax-pre-lttrn 10996 ax-pre-ltadd 10997 ax-addf 11000 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-3or 1088 df-3an 1089 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-reu 3305 df-rab 3306 df-v 3439 df-sbc 3722 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 4566 df-pr 4568 df-op 4572 df-uni 4845 df-iun 4933 df-br 5082 df-opab 5144 df-mpt 5165 df-id 5500 df-po 5514 df-so 5515 df-xp 5606 df-rel 5607 df-cnv 5608 df-co 5609 df-dm 5610 df-rn 5611 df-res 5612 df-ima 5613 df-iota 6410 df-fun 6460 df-fn 6461 df-f 6462 df-f1 6463 df-fo 6464 df-f1o 6465 df-fv 6466 df-ov 7310 df-oprab 7311 df-mpo 7312 df-er 8529 df-en 8765 df-dom 8766 df-sdom 8767 df-pnf 11061 df-mnf 11062 df-ltxr 11064 df-addr 42294 |
This theorem is referenced by: (None) |
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