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| Mirrors > Home > HSE Home > Th. List > shunssi | Structured version Visualization version GIF version | ||
| Description: Union is smaller than subspace sum. (Contributed by NM, 18-Oct-1999.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| shincl.1 | ⊢ 𝐴 ∈ Sℋ |
| shincl.2 | ⊢ 𝐵 ∈ Sℋ |
| Ref | Expression |
|---|---|
| shunssi | ⊢ (𝐴 ∪ 𝐵) ⊆ (𝐴 +ℋ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | shincl.1 | . . . . . . 7 ⊢ 𝐴 ∈ Sℋ | |
| 2 | 1 | sheli 31352 | . . . . . 6 ⊢ (𝑥 ∈ 𝐴 → 𝑥 ∈ ℋ) |
| 3 | ax-hvaddid 31142 | . . . . . . 7 ⊢ (𝑥 ∈ ℋ → (𝑥 +ℎ 0ℎ) = 𝑥) | |
| 4 | 3 | eqcomd 2758 | . . . . . 6 ⊢ (𝑥 ∈ ℋ → 𝑥 = (𝑥 +ℎ 0ℎ)) |
| 5 | 2, 4 | syl 17 | . . . . 5 ⊢ (𝑥 ∈ 𝐴 → 𝑥 = (𝑥 +ℎ 0ℎ)) |
| 6 | shincl.2 | . . . . . . 7 ⊢ 𝐵 ∈ Sℋ | |
| 7 | sh0 31354 | . . . . . . 7 ⊢ (𝐵 ∈ Sℋ → 0ℎ ∈ 𝐵) | |
| 8 | 6, 7 | ax-mp 5 | . . . . . 6 ⊢ 0ℎ ∈ 𝐵 |
| 9 | rspceov 7430 | . . . . . 6 ⊢ ((𝑥 ∈ 𝐴 ∧ 0ℎ ∈ 𝐵 ∧ 𝑥 = (𝑥 +ℎ 0ℎ)) → ∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐵 𝑥 = (𝑦 +ℎ 𝑧)) | |
| 10 | 8, 9 | mp3an2 1460 | . . . . 5 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑥 = (𝑥 +ℎ 0ℎ)) → ∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐵 𝑥 = (𝑦 +ℎ 𝑧)) |
| 11 | 5, 10 | mpdan 695 | . . . 4 ⊢ (𝑥 ∈ 𝐴 → ∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐵 𝑥 = (𝑦 +ℎ 𝑧)) |
| 12 | 6 | sheli 31352 | . . . . . 6 ⊢ (𝑥 ∈ 𝐵 → 𝑥 ∈ ℋ) |
| 13 | hvaddlid 31161 | . . . . . . 7 ⊢ (𝑥 ∈ ℋ → (0ℎ +ℎ 𝑥) = 𝑥) | |
| 14 | 13 | eqcomd 2758 | . . . . . 6 ⊢ (𝑥 ∈ ℋ → 𝑥 = (0ℎ +ℎ 𝑥)) |
| 15 | 12, 14 | syl 17 | . . . . 5 ⊢ (𝑥 ∈ 𝐵 → 𝑥 = (0ℎ +ℎ 𝑥)) |
| 16 | sh0 31354 | . . . . . . 7 ⊢ (𝐴 ∈ Sℋ → 0ℎ ∈ 𝐴) | |
| 17 | 1, 16 | ax-mp 5 | . . . . . 6 ⊢ 0ℎ ∈ 𝐴 |
| 18 | rspceov 7430 | . . . . . 6 ⊢ ((0ℎ ∈ 𝐴 ∧ 𝑥 ∈ 𝐵 ∧ 𝑥 = (0ℎ +ℎ 𝑥)) → ∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐵 𝑥 = (𝑦 +ℎ 𝑧)) | |
| 19 | 17, 18 | mp3an1 1459 | . . . . 5 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑥 = (0ℎ +ℎ 𝑥)) → ∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐵 𝑥 = (𝑦 +ℎ 𝑧)) |
| 20 | 15, 19 | mpdan 695 | . . . 4 ⊢ (𝑥 ∈ 𝐵 → ∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐵 𝑥 = (𝑦 +ℎ 𝑧)) |
| 21 | 11, 20 | jaoi 866 | . . 3 ⊢ ((𝑥 ∈ 𝐴 ∨ 𝑥 ∈ 𝐵) → ∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐵 𝑥 = (𝑦 +ℎ 𝑧)) |
| 22 | elun 4097 | . . 3 ⊢ (𝑥 ∈ (𝐴 ∪ 𝐵) ↔ (𝑥 ∈ 𝐴 ∨ 𝑥 ∈ 𝐵)) | |
| 23 | 1, 6 | shseli 31454 | . . 3 ⊢ (𝑥 ∈ (𝐴 +ℋ 𝐵) ↔ ∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐵 𝑥 = (𝑦 +ℎ 𝑧)) |
| 24 | 21, 22, 23 | 3imtr4i 294 | . 2 ⊢ (𝑥 ∈ (𝐴 ∪ 𝐵) → 𝑥 ∈ (𝐴 +ℋ 𝐵)) |
| 25 | 24 | ssriv 3931 | 1 ⊢ (𝐴 ∪ 𝐵) ⊆ (𝐴 +ℋ 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: ∨ wo 856 = wceq 1550 ∈ wcel 2132 ∃wrex 3076 ∪ cun 3893 ⊆ wss 3895 (class class class)co 7381 ℋchba 31057 +ℎ cva 31058 0ℎc0v 31062 Sℋ csh 31066 +ℋ cph 31069 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1805 ax-4 1819 ax-5 1920 ax-6 1977 ax-7 2018 ax-8 2134 ax-9 2142 ax-10 2165 ax-11 2181 ax-12 2202 ax-ext 2724 ax-rep 5217 ax-sep 5236 ax-nul 5246 ax-pow 5312 ax-pr 5380 ax-un 7703 ax-resscn 11116 ax-1cn 11117 ax-icn 11118 ax-addcl 11119 ax-addrcl 11120 ax-mulcl 11121 ax-mulrcl 11122 ax-mulcom 11123 ax-addass 11124 ax-mulass 11125 ax-distr 11126 ax-i2m1 11127 ax-1ne0 11128 ax-1rid 11129 ax-rnegex 11130 ax-rrecex 11131 ax-cnre 11132 ax-pre-lttri 11133 ax-pre-lttrn 11134 ax-pre-ltadd 11135 ax-hilex 31137 ax-hfvadd 31138 ax-hvcom 31139 ax-hvass 31140 ax-hv0cl 31141 ax-hvaddid 31142 ax-hfvmul 31143 ax-hvmulid 31144 ax-hvdistr2 31147 ax-hvmul0 31148 |
| This theorem depends on definitions: df-bi 209 df-an 399 df-or 857 df-3or 1096 df-3an 1097 df-tru 1553 df-fal 1563 df-ex 1790 df-nf 1794 df-sb 2081 df-mo 2556 df-eu 2586 df-clab 2731 df-cleq 2744 df-clel 2827 df-nfc 2901 df-ne 2948 df-nel 3052 df-ral 3067 df-rex 3077 df-reu 3358 df-rab 3405 df-v 3446 df-sbc 3736 df-csb 3844 df-dif 3898 df-un 3900 df-in 3902 df-ss 3912 df-nul 4277 df-if 4471 df-pw 4547 df-sn 4573 df-pr 4575 df-op 4579 df-uni 4856 df-iun 4941 df-br 5091 df-opab 5153 df-mpt 5172 df-id 5531 df-po 5544 df-so 5545 df-xp 5642 df-rel 5643 df-cnv 5644 df-co 5645 df-dm 5646 df-rn 5647 df-res 5648 df-ima 5649 df-iota 6462 df-fun 6508 df-fn 6509 df-f 6510 df-f1 6511 df-fo 6512 df-f1o 6513 df-fv 6514 df-riota 7338 df-ov 7384 df-oprab 7385 df-mpo 7386 df-er 8662 df-en 8913 df-dom 8914 df-sdom 8915 df-pnf 11204 df-mnf 11205 df-ltxr 11207 df-sub 11402 df-neg 11403 df-grpo 30631 df-ablo 30683 df-hvsub 31109 df-sh 31345 df-shs 31446 |
| This theorem is referenced by: shsval2i 31525 shjshsi 31630 spanuni 31682 |
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