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| Mirrors > Home > HSE Home > Th. List > ax-hvcom | Structured version Visualization version GIF version | ||
| Description: Vector addition is commutative. (Contributed by NM, 3-Sep-1999.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| ax-hvcom | ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → (𝐴 +ℎ 𝐵) = (𝐵 +ℎ 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cA | . . . 4 class 𝐴 | |
| 2 | chba 31578 | . . . 4 class ℋ | |
| 3 | 1, 2 | wcel 2147 | . . 3 wff 𝐴 ∈ ℋ |
| 4 | cB | . . . 4 class 𝐵 | |
| 5 | 4, 2 | wcel 2147 | . . 3 wff 𝐵 ∈ ℋ |
| 6 | 3, 5 | wa 401 | . 2 wff (𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) |
| 7 | cva 31579 | . . . 4 class +ℎ | |
| 8 | 1, 4, 7 | co 7451 | . . 3 class (𝐴 +ℎ 𝐵) |
| 9 | 4, 1, 7 | co 7451 | . . 3 class (𝐵 +ℎ 𝐴) |
| 10 | 8, 9 | wceq 1570 | . 2 wff (𝐴 +ℎ 𝐵) = (𝐵 +ℎ 𝐴) |
| 11 | 6, 10 | wi 4 | 1 wff ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → (𝐴 +ℎ 𝐵) = (𝐵 +ℎ 𝐴)) |
| Colors of variables: wff setvar class |
| This axiom is used by: hvcomi 31678 hvaddlid 31682 hvadd32 31693 hvadd12 31694 hvpncan2 31699 hvsub32 31704 hvaddcan2 31730 hilablo 31819 hhssabloi 31921 shscom 31978 pjhtheu2 32075 pjpjpre 32078 pjpo 32087 spanunsni 32238 chscllem4 32299 hoaddcomi 32431 pjimai 32835 superpos 33013 sumdmdii 33074 cdj3lem3 33097 cdj3lem3b 33099 |
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