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Theorem spanunsni 30820
Description: The span of the union of a closed subspace with a singleton equals the span of its union with an orthogonal singleton. (Contributed by NM, 3-Jun-2004.) (New usage is discouraged.)
Hypotheses
Ref Expression
spanunsn.1 𝐴 ∈ Cβ„‹
spanunsn.2 𝐡 ∈ β„‹
Assertion
Ref Expression
spanunsni (spanβ€˜(𝐴 βˆͺ {𝐡})) = (spanβ€˜(𝐴 βˆͺ {((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}))

Proof of Theorem spanunsni
Dummy variables π‘₯ 𝑦 𝑧 𝑀 𝑣 𝑒 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 spanunsn.1 . . . . . . 7 𝐴 ∈ Cβ„‹
21chshii 30468 . . . . . 6 𝐴 ∈ Sβ„‹
3 spanunsn.2 . . . . . . 7 𝐡 ∈ β„‹
4 snssi 4811 . . . . . . 7 (𝐡 ∈ β„‹ β†’ {𝐡} βŠ† β„‹)
5 spancl 30577 . . . . . . 7 ({𝐡} βŠ† β„‹ β†’ (spanβ€˜{𝐡}) ∈ Sβ„‹ )
63, 4, 5mp2b 10 . . . . . 6 (spanβ€˜{𝐡}) ∈ Sβ„‹
72, 6shseli 30557 . . . . 5 (π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{𝐡})) ↔ βˆƒπ‘¦ ∈ 𝐴 βˆƒπ‘§ ∈ (spanβ€˜{𝐡})π‘₯ = (𝑦 +β„Ž 𝑧))
83elspansni 30799 . . . . . . . 8 (𝑧 ∈ (spanβ€˜{𝐡}) ↔ βˆƒπ‘€ ∈ β„‚ 𝑧 = (𝑀 Β·β„Ž 𝐡))
91, 3pjclii 30662 . . . . . . . . . . . . . . . 16 ((projβ„Žβ€˜π΄)β€˜π΅) ∈ 𝐴
10 shmulcl 30459 . . . . . . . . . . . . . . . 16 ((𝐴 ∈ Sβ„‹ ∧ 𝑀 ∈ β„‚ ∧ ((projβ„Žβ€˜π΄)β€˜π΅) ∈ 𝐴) β†’ (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ 𝐴)
112, 9, 10mp3an13 1453 . . . . . . . . . . . . . . 15 (𝑀 ∈ β„‚ β†’ (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ 𝐴)
12 shaddcl 30458 . . . . . . . . . . . . . . 15 ((𝐴 ∈ Sβ„‹ ∧ 𝑦 ∈ 𝐴 ∧ (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ 𝐴) β†’ (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) ∈ 𝐴)
1311, 12syl3an3 1166 . . . . . . . . . . . . . 14 ((𝐴 ∈ Sβ„‹ ∧ 𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) ∈ 𝐴)
142, 13mp3an1 1449 . . . . . . . . . . . . 13 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) ∈ 𝐴)
151choccli 30548 . . . . . . . . . . . . . . . 16 (βŠ₯β€˜π΄) ∈ Cβ„‹
1615, 3pjhclii 30663 . . . . . . . . . . . . . . 15 ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅) ∈ β„‹
17 spansnmul 30805 . . . . . . . . . . . . . . 15 ((((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅) ∈ β„‹ ∧ 𝑀 ∈ β„‚) β†’ (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) ∈ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}))
1816, 17mpan 689 . . . . . . . . . . . . . 14 (𝑀 ∈ β„‚ β†’ (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) ∈ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}))
1918adantl 483 . . . . . . . . . . . . 13 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) ∈ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}))
201, 3pjpji 30665 . . . . . . . . . . . . . . . . . 18 𝐡 = (((projβ„Žβ€˜π΄)β€˜π΅) +β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))
2120oveq2i 7417 . . . . . . . . . . . . . . . . 17 (𝑀 Β·β„Ž 𝐡) = (𝑀 Β·β„Ž (((projβ„Žβ€˜π΄)β€˜π΅) +β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))
221, 3pjhclii 30663 . . . . . . . . . . . . . . . . . 18 ((projβ„Žβ€˜π΄)β€˜π΅) ∈ β„‹
23 ax-hvdistr1 30249 . . . . . . . . . . . . . . . . . 18 ((𝑀 ∈ β„‚ ∧ ((projβ„Žβ€˜π΄)β€˜π΅) ∈ β„‹ ∧ ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅) ∈ β„‹) β†’ (𝑀 Β·β„Ž (((projβ„Žβ€˜π΄)β€˜π΅) +β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) = ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))))
2422, 16, 23mp3an23 1454 . . . . . . . . . . . . . . . . 17 (𝑀 ∈ β„‚ β†’ (𝑀 Β·β„Ž (((projβ„Žβ€˜π΄)β€˜π΅) +β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) = ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))))
2521, 24eqtrid 2785 . . . . . . . . . . . . . . . 16 (𝑀 ∈ β„‚ β†’ (𝑀 Β·β„Ž 𝐡) = ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))))
2625adantl 483 . . . . . . . . . . . . . . 15 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (𝑀 Β·β„Ž 𝐡) = ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))))
2726oveq2d 7422 . . . . . . . . . . . . . 14 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡)) = (𝑦 +β„Ž ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))))
281cheli 30473 . . . . . . . . . . . . . . 15 (𝑦 ∈ 𝐴 β†’ 𝑦 ∈ β„‹)
29 hvmulcl 30254 . . . . . . . . . . . . . . . . 17 ((𝑀 ∈ β„‚ ∧ ((projβ„Žβ€˜π΄)β€˜π΅) ∈ β„‹) β†’ (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹)
3022, 29mpan2 690 . . . . . . . . . . . . . . . 16 (𝑀 ∈ β„‚ β†’ (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹)
31 hvmulcl 30254 . . . . . . . . . . . . . . . . 17 ((𝑀 ∈ β„‚ ∧ ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅) ∈ β„‹) β†’ (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) ∈ β„‹)
3216, 31mpan2 690 . . . . . . . . . . . . . . . 16 (𝑀 ∈ β„‚ β†’ (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) ∈ β„‹)
3330, 32jca 513 . . . . . . . . . . . . . . 15 (𝑀 ∈ β„‚ β†’ ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹ ∧ (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) ∈ β„‹))
34 ax-hvass 30243 . . . . . . . . . . . . . . . 16 ((𝑦 ∈ β„‹ ∧ (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹ ∧ (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) ∈ β„‹) β†’ ((𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) = (𝑦 +β„Ž ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))))
35343expb 1121 . . . . . . . . . . . . . . 15 ((𝑦 ∈ β„‹ ∧ ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹ ∧ (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) ∈ β„‹)) β†’ ((𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) = (𝑦 +β„Ž ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))))
3628, 33, 35syl2an 597 . . . . . . . . . . . . . 14 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ ((𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) = (𝑦 +β„Ž ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))))
3727, 36eqtr4d 2776 . . . . . . . . . . . . 13 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡)) = ((𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))))
38 rspceov 7453 . . . . . . . . . . . . 13 (((𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) ∈ 𝐴 ∧ (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) ∈ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}) ∧ (𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡)) = ((𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))) β†’ βˆƒπ‘£ ∈ 𝐴 βˆƒπ‘’ ∈ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})(𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡)) = (𝑣 +β„Ž 𝑒))
3914, 19, 37, 38syl3anc 1372 . . . . . . . . . . . 12 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ βˆƒπ‘£ ∈ 𝐴 βˆƒπ‘’ ∈ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})(𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡)) = (𝑣 +β„Ž 𝑒))
40 snssi 4811 . . . . . . . . . . . . . 14 (((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅) ∈ β„‹ β†’ {((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)} βŠ† β„‹)
41 spancl 30577 . . . . . . . . . . . . . 14 ({((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)} βŠ† β„‹ β†’ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}) ∈ Sβ„‹ )
4216, 40, 41mp2b 10 . . . . . . . . . . . . 13 (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}) ∈ Sβ„‹
432, 42shseli 30557 . . . . . . . . . . . 12 ((𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡)) ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})) ↔ βˆƒπ‘£ ∈ 𝐴 βˆƒπ‘’ ∈ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})(𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡)) = (𝑣 +β„Ž 𝑒))
4439, 43sylibr 233 . . . . . . . . . . 11 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡)) ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})))
45 oveq2 7414 . . . . . . . . . . . . 13 (𝑧 = (𝑀 Β·β„Ž 𝐡) β†’ (𝑦 +β„Ž 𝑧) = (𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡)))
4645eqeq2d 2744 . . . . . . . . . . . 12 (𝑧 = (𝑀 Β·β„Ž 𝐡) β†’ (π‘₯ = (𝑦 +β„Ž 𝑧) ↔ π‘₯ = (𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡))))
4746biimpa 478 . . . . . . . . . . 11 ((𝑧 = (𝑀 Β·β„Ž 𝐡) ∧ π‘₯ = (𝑦 +β„Ž 𝑧)) β†’ π‘₯ = (𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡)))
48 eleq1 2822 . . . . . . . . . . . 12 (π‘₯ = (𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡)) β†’ (π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})) ↔ (𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡)) ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}))))
4948biimparc 481 . . . . . . . . . . 11 (((𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡)) ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})) ∧ π‘₯ = (𝑦 +β„Ž (𝑀 Β·β„Ž 𝐡))) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})))
5044, 47, 49syl2an 597 . . . . . . . . . 10 (((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) ∧ (𝑧 = (𝑀 Β·β„Ž 𝐡) ∧ π‘₯ = (𝑦 +β„Ž 𝑧))) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})))
5150exp43 438 . . . . . . . . 9 (𝑦 ∈ 𝐴 β†’ (𝑀 ∈ β„‚ β†’ (𝑧 = (𝑀 Β·β„Ž 𝐡) β†’ (π‘₯ = (𝑦 +β„Ž 𝑧) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}))))))
5251rexlimdv 3154 . . . . . . . 8 (𝑦 ∈ 𝐴 β†’ (βˆƒπ‘€ ∈ β„‚ 𝑧 = (𝑀 Β·β„Ž 𝐡) β†’ (π‘₯ = (𝑦 +β„Ž 𝑧) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})))))
538, 52biimtrid 241 . . . . . . 7 (𝑦 ∈ 𝐴 β†’ (𝑧 ∈ (spanβ€˜{𝐡}) β†’ (π‘₯ = (𝑦 +β„Ž 𝑧) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})))))
5453rexlimdv 3154 . . . . . 6 (𝑦 ∈ 𝐴 β†’ (βˆƒπ‘§ ∈ (spanβ€˜{𝐡})π‘₯ = (𝑦 +β„Ž 𝑧) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}))))
5554rexlimiv 3149 . . . . 5 (βˆƒπ‘¦ ∈ 𝐴 βˆƒπ‘§ ∈ (spanβ€˜{𝐡})π‘₯ = (𝑦 +β„Ž 𝑧) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})))
567, 55sylbi 216 . . . 4 (π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{𝐡})) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})))
572, 42shseli 30557 . . . . 5 (π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})) ↔ βˆƒπ‘¦ ∈ 𝐴 βˆƒπ‘§ ∈ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})π‘₯ = (𝑦 +β„Ž 𝑧))
5816elspansni 30799 . . . . . . . 8 (𝑧 ∈ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}) ↔ βˆƒπ‘€ ∈ β„‚ 𝑧 = (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))
59 negcl 11457 . . . . . . . . . . . . . . . . 17 (𝑀 ∈ β„‚ β†’ -𝑀 ∈ β„‚)
60 shmulcl 30459 . . . . . . . . . . . . . . . . . 18 ((𝐴 ∈ Sβ„‹ ∧ -𝑀 ∈ β„‚ ∧ ((projβ„Žβ€˜π΄)β€˜π΅) ∈ 𝐴) β†’ (-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ 𝐴)
612, 9, 60mp3an13 1453 . . . . . . . . . . . . . . . . 17 (-𝑀 ∈ β„‚ β†’ (-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ 𝐴)
6259, 61syl 17 . . . . . . . . . . . . . . . 16 (𝑀 ∈ β„‚ β†’ (-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ 𝐴)
63 shaddcl 30458 . . . . . . . . . . . . . . . 16 ((𝐴 ∈ Sβ„‹ ∧ (-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ 𝐴 ∧ 𝑦 ∈ 𝐴) β†’ ((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž 𝑦) ∈ 𝐴)
6462, 63syl3an2 1165 . . . . . . . . . . . . . . 15 ((𝐴 ∈ Sβ„‹ ∧ 𝑀 ∈ β„‚ ∧ 𝑦 ∈ 𝐴) β†’ ((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž 𝑦) ∈ 𝐴)
652, 64mp3an1 1449 . . . . . . . . . . . . . 14 ((𝑀 ∈ β„‚ ∧ 𝑦 ∈ 𝐴) β†’ ((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž 𝑦) ∈ 𝐴)
6665ancoms 460 . . . . . . . . . . . . 13 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ ((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž 𝑦) ∈ 𝐴)
67 spansnmul 30805 . . . . . . . . . . . . . . 15 ((𝐡 ∈ β„‹ ∧ 𝑀 ∈ β„‚) β†’ (𝑀 Β·β„Ž 𝐡) ∈ (spanβ€˜{𝐡}))
683, 67mpan 689 . . . . . . . . . . . . . 14 (𝑀 ∈ β„‚ β†’ (𝑀 Β·β„Ž 𝐡) ∈ (spanβ€˜{𝐡}))
6968adantl 483 . . . . . . . . . . . . 13 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (𝑀 Β·β„Ž 𝐡) ∈ (spanβ€˜{𝐡}))
70 hvm1neg 30273 . . . . . . . . . . . . . . . . . . . 20 ((𝑀 ∈ β„‚ ∧ ((projβ„Žβ€˜π΄)β€˜π΅) ∈ β„‹) β†’ (-1 Β·β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) = (-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)))
7122, 70mpan2 690 . . . . . . . . . . . . . . . . . . 19 (𝑀 ∈ β„‚ β†’ (-1 Β·β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) = (-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)))
7271oveq2d 7422 . . . . . . . . . . . . . . . . . 18 (𝑀 ∈ β„‚ β†’ ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (-1 Β·β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)))) = ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))))
73 hvnegid 30268 . . . . . . . . . . . . . . . . . . 19 ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹ β†’ ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (-1 Β·β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)))) = 0β„Ž)
7430, 73syl 17 . . . . . . . . . . . . . . . . . 18 (𝑀 ∈ β„‚ β†’ ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (-1 Β·β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)))) = 0β„Ž)
75 hvmulcl 30254 . . . . . . . . . . . . . . . . . . . 20 ((-𝑀 ∈ β„‚ ∧ ((projβ„Žβ€˜π΄)β€˜π΅) ∈ β„‹) β†’ (-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹)
7659, 22, 75sylancl 587 . . . . . . . . . . . . . . . . . . 19 (𝑀 ∈ β„‚ β†’ (-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹)
77 ax-hvcom 30242 . . . . . . . . . . . . . . . . . . 19 (((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹ ∧ (-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹) β†’ ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) = ((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))))
7830, 76, 77syl2anc 585 . . . . . . . . . . . . . . . . . 18 (𝑀 ∈ β„‚ β†’ ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) = ((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))))
7972, 74, 783eqtr3d 2781 . . . . . . . . . . . . . . . . 17 (𝑀 ∈ β„‚ β†’ 0β„Ž = ((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))))
8079adantl 483 . . . . . . . . . . . . . . . 16 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ 0β„Ž = ((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))))
8180oveq1d 7421 . . . . . . . . . . . . . . 15 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (0β„Ž +β„Ž (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))) = (((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) +β„Ž (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))))
82 hvaddcl 30253 . . . . . . . . . . . . . . . . 17 ((𝑦 ∈ β„‹ ∧ (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) ∈ β„‹) β†’ (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) ∈ β„‹)
8328, 32, 82syl2an 597 . . . . . . . . . . . . . . . 16 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) ∈ β„‹)
84 hvaddlid 30264 . . . . . . . . . . . . . . . 16 ((𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) ∈ β„‹ β†’ (0β„Ž +β„Ž (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))) = (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))))
8583, 84syl 17 . . . . . . . . . . . . . . 15 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (0β„Ž +β„Ž (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))) = (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))))
8676, 30jca 513 . . . . . . . . . . . . . . . . 17 (𝑀 ∈ β„‚ β†’ ((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹ ∧ (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹))
8786adantl 483 . . . . . . . . . . . . . . . 16 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ ((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹ ∧ (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹))
8828, 32anim12i 614 . . . . . . . . . . . . . . . 16 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (𝑦 ∈ β„‹ ∧ (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) ∈ β„‹))
89 hvadd4 30277 . . . . . . . . . . . . . . . 16 ((((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹ ∧ (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) ∈ β„‹) ∧ (𝑦 ∈ β„‹ ∧ (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) ∈ β„‹)) β†’ (((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) +β„Ž (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))) = (((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž 𝑦) +β„Ž ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))))
9087, 88, 89syl2anc 585 . . . . . . . . . . . . . . 15 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅))) +β„Ž (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))) = (((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž 𝑦) +β„Ž ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))))
9181, 85, 903eqtr3d 2781 . . . . . . . . . . . . . 14 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) = (((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž 𝑦) +β„Ž ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))))
9226oveq2d 7422 . . . . . . . . . . . . . 14 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž 𝑦) +β„Ž (𝑀 Β·β„Ž 𝐡)) = (((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž 𝑦) +β„Ž ((𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))))
9391, 92eqtr4d 2776 . . . . . . . . . . . . 13 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) = (((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž 𝑦) +β„Ž (𝑀 Β·β„Ž 𝐡)))
94 rspceov 7453 . . . . . . . . . . . . 13 ((((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž 𝑦) ∈ 𝐴 ∧ (𝑀 Β·β„Ž 𝐡) ∈ (spanβ€˜{𝐡}) ∧ (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) = (((-𝑀 Β·β„Ž ((projβ„Žβ€˜π΄)β€˜π΅)) +β„Ž 𝑦) +β„Ž (𝑀 Β·β„Ž 𝐡))) β†’ βˆƒπ‘£ ∈ 𝐴 βˆƒπ‘’ ∈ (spanβ€˜{𝐡})(𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) = (𝑣 +β„Ž 𝑒))
9566, 69, 93, 94syl3anc 1372 . . . . . . . . . . . 12 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ βˆƒπ‘£ ∈ 𝐴 βˆƒπ‘’ ∈ (spanβ€˜{𝐡})(𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) = (𝑣 +β„Ž 𝑒))
962, 6shseli 30557 . . . . . . . . . . . 12 ((𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) ∈ (𝐴 +β„‹ (spanβ€˜{𝐡})) ↔ βˆƒπ‘£ ∈ 𝐴 βˆƒπ‘’ ∈ (spanβ€˜{𝐡})(𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) = (𝑣 +β„Ž 𝑒))
9795, 96sylibr 233 . . . . . . . . . . 11 ((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) β†’ (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) ∈ (𝐴 +β„‹ (spanβ€˜{𝐡})))
98 oveq2 7414 . . . . . . . . . . . . 13 (𝑧 = (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) β†’ (𝑦 +β„Ž 𝑧) = (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))))
9998eqeq2d 2744 . . . . . . . . . . . 12 (𝑧 = (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) β†’ (π‘₯ = (𝑦 +β„Ž 𝑧) ↔ π‘₯ = (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))))
10099biimpa 478 . . . . . . . . . . 11 ((𝑧 = (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) ∧ π‘₯ = (𝑦 +β„Ž 𝑧)) β†’ π‘₯ = (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))))
101 eleq1 2822 . . . . . . . . . . . 12 (π‘₯ = (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) β†’ (π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{𝐡})) ↔ (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) ∈ (𝐴 +β„‹ (spanβ€˜{𝐡}))))
102101biimparc 481 . . . . . . . . . . 11 (((𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅))) ∈ (𝐴 +β„‹ (spanβ€˜{𝐡})) ∧ π‘₯ = (𝑦 +β„Ž (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)))) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{𝐡})))
10397, 100, 102syl2an 597 . . . . . . . . . 10 (((𝑦 ∈ 𝐴 ∧ 𝑀 ∈ β„‚) ∧ (𝑧 = (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) ∧ π‘₯ = (𝑦 +β„Ž 𝑧))) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{𝐡})))
104103exp43 438 . . . . . . . . 9 (𝑦 ∈ 𝐴 β†’ (𝑀 ∈ β„‚ β†’ (𝑧 = (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) β†’ (π‘₯ = (𝑦 +β„Ž 𝑧) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{𝐡}))))))
105104rexlimdv 3154 . . . . . . . 8 (𝑦 ∈ 𝐴 β†’ (βˆƒπ‘€ ∈ β„‚ 𝑧 = (𝑀 Β·β„Ž ((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)) β†’ (π‘₯ = (𝑦 +β„Ž 𝑧) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{𝐡})))))
10658, 105biimtrid 241 . . . . . . 7 (𝑦 ∈ 𝐴 β†’ (𝑧 ∈ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}) β†’ (π‘₯ = (𝑦 +β„Ž 𝑧) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{𝐡})))))
107106rexlimdv 3154 . . . . . 6 (𝑦 ∈ 𝐴 β†’ (βˆƒπ‘§ ∈ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})π‘₯ = (𝑦 +β„Ž 𝑧) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{𝐡}))))
108107rexlimiv 3149 . . . . 5 (βˆƒπ‘¦ ∈ 𝐴 βˆƒπ‘§ ∈ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})π‘₯ = (𝑦 +β„Ž 𝑧) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{𝐡})))
10957, 108sylbi 216 . . . 4 (π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})) β†’ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{𝐡})))
11056, 109impbii 208 . . 3 (π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{𝐡})) ↔ π‘₯ ∈ (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})))
111110eqriv 2730 . 2 (𝐴 +β„‹ (spanβ€˜{𝐡})) = (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}))
1121chssii 30472 . . . 4 𝐴 βŠ† β„‹
1133, 4ax-mp 5 . . . 4 {𝐡} βŠ† β„‹
114112, 113spanuni 30785 . . 3 (spanβ€˜(𝐴 βˆͺ {𝐡})) = ((spanβ€˜π΄) +β„‹ (spanβ€˜{𝐡}))
115 spanid 30588 . . . . 5 (𝐴 ∈ Sβ„‹ β†’ (spanβ€˜π΄) = 𝐴)
1162, 115ax-mp 5 . . . 4 (spanβ€˜π΄) = 𝐴
117116oveq1i 7416 . . 3 ((spanβ€˜π΄) +β„‹ (spanβ€˜{𝐡})) = (𝐴 +β„‹ (spanβ€˜{𝐡}))
118114, 117eqtri 2761 . 2 (spanβ€˜(𝐴 βˆͺ {𝐡})) = (𝐴 +β„‹ (spanβ€˜{𝐡}))
11916, 40ax-mp 5 . . . 4 {((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)} βŠ† β„‹
120112, 119spanuni 30785 . . 3 (spanβ€˜(𝐴 βˆͺ {((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})) = ((spanβ€˜π΄) +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}))
121116oveq1i 7416 . . 3 ((spanβ€˜π΄) +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})) = (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}))
122120, 121eqtri 2761 . 2 (spanβ€˜(𝐴 βˆͺ {((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)})) = (𝐴 +β„‹ (spanβ€˜{((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}))
123111, 118, 1223eqtr4i 2771 1 (spanβ€˜(𝐴 βˆͺ {𝐡})) = (spanβ€˜(𝐴 βˆͺ {((projβ„Žβ€˜(βŠ₯β€˜π΄))β€˜π΅)}))
Colors of variables: wff setvar class
Syntax hints:   β†’ wi 4   ∧ wa 397   = wceq 1542   ∈ wcel 2107  βˆƒwrex 3071   βˆͺ cun 3946   βŠ† wss 3948  {csn 4628  β€˜cfv 6541  (class class class)co 7406  β„‚cc 11105  1c1 11108  -cneg 11442   β„‹chba 30160   +β„Ž cva 30161   Β·β„Ž csm 30162  0β„Žc0v 30165   Sβ„‹ csh 30169   Cβ„‹ cch 30170  βŠ₯cort 30171   +β„‹ cph 30172  spancspn 30173  projβ„Žcpjh 30178
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2155  ax-12 2172  ax-ext 2704  ax-rep 5285  ax-sep 5299  ax-nul 5306  ax-pow 5363  ax-pr 5427  ax-un 7722  ax-inf2 9633  ax-cc 10427  ax-cnex 11163  ax-resscn 11164  ax-1cn 11165  ax-icn 11166  ax-addcl 11167  ax-addrcl 11168  ax-mulcl 11169  ax-mulrcl 11170  ax-mulcom 11171  ax-addass 11172  ax-mulass 11173  ax-distr 11174  ax-i2m1 11175  ax-1ne0 11176  ax-1rid 11177  ax-rnegex 11178  ax-rrecex 11179  ax-cnre 11180  ax-pre-lttri 11181  ax-pre-lttrn 11182  ax-pre-ltadd 11183  ax-pre-mulgt0 11184  ax-pre-sup 11185  ax-addf 11186  ax-mulf 11187  ax-hilex 30240  ax-hfvadd 30241  ax-hvcom 30242  ax-hvass 30243  ax-hv0cl 30244  ax-hvaddid 30245  ax-hfvmul 30246  ax-hvmulid 30247  ax-hvmulass 30248  ax-hvdistr1 30249  ax-hvdistr2 30250  ax-hvmul0 30251  ax-hfi 30320  ax-his1 30323  ax-his2 30324  ax-his3 30325  ax-his4 30326  ax-hcompl 30443
This theorem depends on definitions:  df-bi 206  df-an 398  df-or 847  df-3or 1089  df-3an 1090  df-tru 1545  df-fal 1555  df-ex 1783  df-nf 1787  df-sb 2069  df-mo 2535  df-eu 2564  df-clab 2711  df-cleq 2725  df-clel 2811  df-nfc 2886  df-ne 2942  df-nel 3048  df-ral 3063  df-rex 3072  df-rmo 3377  df-reu 3378  df-rab 3434  df-v 3477  df-sbc 3778  df-csb 3894  df-dif 3951  df-un 3953  df-in 3955  df-ss 3965  df-pss 3967  df-nul 4323  df-if 4529  df-pw 4604  df-sn 4629  df-pr 4631  df-tp 4633  df-op 4635  df-uni 4909  df-int 4951  df-iun 4999  df-iin 5000  df-br 5149  df-opab 5211  df-mpt 5232  df-tr 5266  df-id 5574  df-eprel 5580  df-po 5588  df-so 5589  df-fr 5631  df-se 5632  df-we 5633  df-xp 5682  df-rel 5683  df-cnv 5684  df-co 5685  df-dm 5686  df-rn 5687  df-res 5688  df-ima 5689  df-pred 6298  df-ord 6365  df-on 6366  df-lim 6367  df-suc 6368  df-iota 6493  df-fun 6543  df-fn 6544  df-f 6545  df-f1 6546  df-fo 6547  df-f1o 6548  df-fv 6549  df-isom 6550  df-riota 7362  df-ov 7409  df-oprab 7410  df-mpo 7411  df-of 7667  df-om 7853  df-1st 7972  df-2nd 7973  df-supp 8144  df-frecs 8263  df-wrecs 8294  df-recs 8368  df-rdg 8407  df-1o 8463  df-2o 8464  df-oadd 8467  df-omul 8468  df-er 8700  df-map 8819  df-pm 8820  df-ixp 8889  df-en 8937  df-dom 8938  df-sdom 8939  df-fin 8940  df-fsupp 9359  df-fi 9403  df-sup 9434  df-inf 9435  df-oi 9502  df-card 9931  df-acn 9934  df-pnf 11247  df-mnf 11248  df-xr 11249  df-ltxr 11250  df-le 11251  df-sub 11443  df-neg 11444  df-div 11869  df-nn 12210  df-2 12272  df-3 12273  df-4 12274  df-5 12275  df-6 12276  df-7 12277  df-8 12278  df-9 12279  df-n0 12470  df-z 12556  df-dec 12675  df-uz 12820  df-q 12930  df-rp 12972  df-xneg 13089  df-xadd 13090  df-xmul 13091  df-ioo 13325  df-ico 13327  df-icc 13328  df-fz 13482  df-fzo 13625  df-fl 13754  df-seq 13964  df-exp 14025  df-hash 14288  df-cj 15043  df-re 15044  df-im 15045  df-sqrt 15179  df-abs 15180  df-clim 15429  df-rlim 15430  df-sum 15630  df-struct 17077  df-sets 17094  df-slot 17112  df-ndx 17124  df-base 17142  df-ress 17171  df-plusg 17207  df-mulr 17208  df-starv 17209  df-sca 17210  df-vsca 17211  df-ip 17212  df-tset 17213  df-ple 17214  df-ds 17216  df-unif 17217  df-hom 17218  df-cco 17219  df-rest 17365  df-topn 17366  df-0g 17384  df-gsum 17385  df-topgen 17386  df-pt 17387  df-prds 17390  df-xrs 17445  df-qtop 17450  df-imas 17451  df-xps 17453  df-mre 17527  df-mrc 17528  df-acs 17530  df-mgm 18558  df-sgrp 18607  df-mnd 18623  df-submnd 18669  df-mulg 18946  df-cntz 19176  df-cmn 19645  df-psmet 20929  df-xmet 20930  df-met 20931  df-bl 20932  df-mopn 20933  df-fbas 20934  df-fg 20935  df-cnfld 20938  df-top 22388  df-topon 22405  df-topsp 22427  df-bases 22441  df-cld 22515  df-ntr 22516  df-cls 22517  df-nei 22594  df-cn 22723  df-cnp 22724  df-lm 22725  df-haus 22811  df-tx 23058  df-hmeo 23251  df-fil 23342  df-fm 23434  df-flim 23435  df-flf 23436  df-xms 23818  df-ms 23819  df-tms 23820  df-cfil 24764  df-cau 24765  df-cmet 24766  df-grpo 29734  df-gid 29735  df-ginv 29736  df-gdiv 29737  df-ablo 29786  df-vc 29800  df-nv 29833  df-va 29836  df-ba 29837  df-sm 29838  df-0v 29839  df-vs 29840  df-nmcv 29841  df-ims 29842  df-dip 29942  df-ssp 29963  df-ph 30054  df-cbn 30104  df-hnorm 30209  df-hba 30210  df-hvsub 30212  df-hlim 30213  df-hcau 30214  df-sh 30448  df-ch 30462  df-oc 30493  df-ch0 30494  df-shs 30549  df-span 30550  df-pjh 30636
This theorem is referenced by:  spansnji  30887
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