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| Mirrors > Home > HSE Home > Th. List > shsidmi | Structured version Visualization version GIF version | ||
| Description: Idempotent law for Hilbert subspace sum. (Contributed by NM, 6-Jun-2004.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| shsidm.1 | ⊢ 𝐴 ∈ Sℋ |
| Ref | Expression |
|---|---|
| shsidmi | ⊢ (𝐴 +ℋ 𝐴) = 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | shsidm.1 | . . . . 5 ⊢ 𝐴 ∈ Sℋ | |
| 2 | 1, 1 | shseli 31403 | . . . 4 ⊢ (𝑥 ∈ (𝐴 +ℋ 𝐴) ↔ ∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐴 𝑥 = (𝑦 +ℎ 𝑧)) |
| 3 | shaddcl 31304 | . . . . . . 7 ⊢ ((𝐴 ∈ Sℋ ∧ 𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴) → (𝑦 +ℎ 𝑧) ∈ 𝐴) | |
| 4 | 1, 3 | mp3an1 1451 | . . . . . 6 ⊢ ((𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴) → (𝑦 +ℎ 𝑧) ∈ 𝐴) |
| 5 | eleq1 2825 | . . . . . 6 ⊢ (𝑥 = (𝑦 +ℎ 𝑧) → (𝑥 ∈ 𝐴 ↔ (𝑦 +ℎ 𝑧) ∈ 𝐴)) | |
| 6 | 4, 5 | syl5ibrcom 247 | . . . . 5 ⊢ ((𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐴) → (𝑥 = (𝑦 +ℎ 𝑧) → 𝑥 ∈ 𝐴)) |
| 7 | 6 | rexlimivv 3180 | . . . 4 ⊢ (∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐴 𝑥 = (𝑦 +ℎ 𝑧) → 𝑥 ∈ 𝐴) |
| 8 | 2, 7 | sylbi 217 | . . 3 ⊢ (𝑥 ∈ (𝐴 +ℋ 𝐴) → 𝑥 ∈ 𝐴) |
| 9 | 8 | ssriv 3939 | . 2 ⊢ (𝐴 +ℋ 𝐴) ⊆ 𝐴 |
| 10 | 1, 1 | shsub1i 31459 | . 2 ⊢ 𝐴 ⊆ (𝐴 +ℋ 𝐴) |
| 11 | 9, 10 | eqssi 3952 | 1 ⊢ (𝐴 +ℋ 𝐴) = 𝐴 |
| Colors of variables: wff setvar class |
| Syntax hints: ∧ wa 395 = wceq 1542 ∈ wcel 2114 ∃wrex 3062 (class class class)co 7368 +ℎ cva 31007 Sℋ csh 31015 +ℋ cph 31018 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5226 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-hilex 31086 ax-hfvadd 31087 ax-hvcom 31088 ax-hvass 31089 ax-hv0cl 31090 ax-hvaddid 31091 ax-hfvmul 31092 ax-hvmulid 31093 ax-hvdistr2 31096 ax-hvmul0 31097 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5527 df-po 5540 df-so 5541 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-er 8645 df-en 8896 df-dom 8897 df-sdom 8898 df-pnf 11180 df-mnf 11181 df-ltxr 11183 df-sub 11378 df-neg 11379 df-grpo 30580 df-ablo 30632 df-hvsub 31058 df-sh 31294 df-shs 31395 |
| This theorem is referenced by: shslubi 31472 |
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