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| Mirrors > Home > HSE Home > Th. List > shsel1 | Structured version Visualization version GIF version | ||
| Description: A subspace sum contains a member of one of its subspaces. (Contributed by NM, 15-Dec-2004.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| shsel1 | ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐶 ∈ 𝐴 → 𝐶 ∈ (𝐴 +ℋ 𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | shel 31504 | . . . . 5 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐶 ∈ 𝐴) → 𝐶 ∈ ℋ) | |
| 2 | ax-hvaddid 31297 | . . . . 5 ⊢ (𝐶 ∈ ℋ → (𝐶 +ℎ 0ℎ) = 𝐶) | |
| 3 | 1, 2 | syl 18 | . . . 4 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐶 ∈ 𝐴) → (𝐶 +ℎ 0ℎ) = 𝐶) |
| 4 | 3 | adantlr 727 | . . 3 ⊢ (((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) ∧ 𝐶 ∈ 𝐴) → (𝐶 +ℎ 0ℎ) = 𝐶) |
| 5 | sh0 31509 | . . . . . 6 ⊢ (𝐵 ∈ Sℋ → 0ℎ ∈ 𝐵) | |
| 6 | 5 | adantl 486 | . . . . 5 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → 0ℎ ∈ 𝐵) |
| 7 | shsva 31613 | . . . . 5 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → ((𝐶 ∈ 𝐴 ∧ 0ℎ ∈ 𝐵) → (𝐶 +ℎ 0ℎ) ∈ (𝐴 +ℋ 𝐵))) | |
| 8 | 6, 7 | mpan2d 706 | . . . 4 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐶 ∈ 𝐴 → (𝐶 +ℎ 0ℎ) ∈ (𝐴 +ℋ 𝐵))) |
| 9 | 8 | imp 411 | . . 3 ⊢ (((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) ∧ 𝐶 ∈ 𝐴) → (𝐶 +ℎ 0ℎ) ∈ (𝐴 +ℋ 𝐵)) |
| 10 | 4, 9 | eqeltrrd 2870 | . 2 ⊢ (((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) ∧ 𝐶 ∈ 𝐴) → 𝐶 ∈ (𝐴 +ℋ 𝐵)) |
| 11 | 10 | ex 417 | 1 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐶 ∈ 𝐴 → 𝐶 ∈ (𝐴 +ℋ 𝐵))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1567 ∈ wcel 2149 (class class class)co 7411 ℋchba 31212 +ℎ cva 31213 0ℎc0v 31217 Sℋ csh 31221 +ℋ cph 31224 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-rep 5240 ax-sep 5259 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-resscn 11157 ax-1cn 11158 ax-icn 11159 ax-addcl 11160 ax-addrcl 11161 ax-mulcl 11162 ax-mulrcl 11163 ax-mulcom 11164 ax-addass 11165 ax-mulass 11166 ax-distr 11167 ax-i2m1 11168 ax-1ne0 11169 ax-1rid 11170 ax-rnegex 11171 ax-rrecex 11172 ax-cnre 11173 ax-pre-lttri 11174 ax-pre-lttrn 11175 ax-pre-ltadd 11176 ax-hilex 31292 ax-hfvadd 31293 ax-hvcom 31294 ax-hvass 31295 ax-hv0cl 31296 ax-hvaddid 31297 ax-hfvmul 31298 ax-hvmulid 31299 ax-hvdistr2 31302 ax-hvmul0 31303 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-reu 3376 df-rab 3423 df-v 3463 df-sbc 3752 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-nul 4293 df-if 4491 df-pw 4567 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5557 df-po 5570 df-so 5571 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-er 8694 df-en 8944 df-dom 8945 df-sdom 8946 df-pnf 11245 df-mnf 11246 df-ltxr 11248 df-sub 11443 df-neg 11444 df-grpo 30786 df-ablo 30838 df-hvsub 31264 df-sh 31500 df-shs 31601 |
| This theorem is referenced by: shsel2 31615 shsvs 31616 shsub1 31617 shsel1i 31658 |
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