| Hilbert Space Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > HSE Home > Th. List > norm3difi | Structured version Visualization version GIF version | ||
| Description: Norm of differences around common element. Part of Lemma 3.6 of [Beran] p. 101. (Contributed by NM, 16-Aug-1999.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| norm3dif.1 | ⊢ 𝐴 ∈ ℋ |
| norm3dif.2 | ⊢ 𝐵 ∈ ℋ |
| norm3dif.3 | ⊢ 𝐶 ∈ ℋ |
| Ref | Expression |
|---|---|
| norm3difi | ⊢ (normℎ‘(𝐴 −ℎ 𝐵)) ≤ ((normℎ‘(𝐴 −ℎ 𝐶)) + (normℎ‘(𝐶 −ℎ 𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | norm3dif.1 | . . . . 5 ⊢ 𝐴 ∈ ℋ | |
| 2 | norm3dif.2 | . . . . 5 ⊢ 𝐵 ∈ ℋ | |
| 3 | 1, 2 | hvsubvali 30956 | . . . 4 ⊢ (𝐴 −ℎ 𝐵) = (𝐴 +ℎ (-1 ·ℎ 𝐵)) |
| 4 | norm3dif.3 | . . . . . . 7 ⊢ 𝐶 ∈ ℋ | |
| 5 | 1, 4 | hvsubvali 30956 | . . . . . 6 ⊢ (𝐴 −ℎ 𝐶) = (𝐴 +ℎ (-1 ·ℎ 𝐶)) |
| 6 | 4, 2 | hvsubvali 30956 | . . . . . 6 ⊢ (𝐶 −ℎ 𝐵) = (𝐶 +ℎ (-1 ·ℎ 𝐵)) |
| 7 | 5, 6 | oveq12i 7402 | . . . . 5 ⊢ ((𝐴 −ℎ 𝐶) +ℎ (𝐶 −ℎ 𝐵)) = ((𝐴 +ℎ (-1 ·ℎ 𝐶)) +ℎ (𝐶 +ℎ (-1 ·ℎ 𝐵))) |
| 8 | neg1cn 12178 | . . . . . . 7 ⊢ -1 ∈ ℂ | |
| 9 | 8, 4 | hvmulcli 30950 | . . . . . 6 ⊢ (-1 ·ℎ 𝐶) ∈ ℋ |
| 10 | 8, 2 | hvmulcli 30950 | . . . . . . 7 ⊢ (-1 ·ℎ 𝐵) ∈ ℋ |
| 11 | 4, 10 | hvaddcli 30954 | . . . . . 6 ⊢ (𝐶 +ℎ (-1 ·ℎ 𝐵)) ∈ ℋ |
| 12 | 1, 9, 11 | hvassi 30989 | . . . . 5 ⊢ ((𝐴 +ℎ (-1 ·ℎ 𝐶)) +ℎ (𝐶 +ℎ (-1 ·ℎ 𝐵))) = (𝐴 +ℎ ((-1 ·ℎ 𝐶) +ℎ (𝐶 +ℎ (-1 ·ℎ 𝐵)))) |
| 13 | 9, 4, 10 | hvassi 30989 | . . . . . . 7 ⊢ (((-1 ·ℎ 𝐶) +ℎ 𝐶) +ℎ (-1 ·ℎ 𝐵)) = ((-1 ·ℎ 𝐶) +ℎ (𝐶 +ℎ (-1 ·ℎ 𝐵))) |
| 14 | 9, 4 | hvcomi 30955 | . . . . . . . . . 10 ⊢ ((-1 ·ℎ 𝐶) +ℎ 𝐶) = (𝐶 +ℎ (-1 ·ℎ 𝐶)) |
| 15 | 4, 4 | hvsubvali 30956 | . . . . . . . . . 10 ⊢ (𝐶 −ℎ 𝐶) = (𝐶 +ℎ (-1 ·ℎ 𝐶)) |
| 16 | hvsubid 30962 | . . . . . . . . . . 11 ⊢ (𝐶 ∈ ℋ → (𝐶 −ℎ 𝐶) = 0ℎ) | |
| 17 | 4, 16 | ax-mp 5 | . . . . . . . . . 10 ⊢ (𝐶 −ℎ 𝐶) = 0ℎ |
| 18 | 14, 15, 17 | 3eqtr2i 2759 | . . . . . . . . 9 ⊢ ((-1 ·ℎ 𝐶) +ℎ 𝐶) = 0ℎ |
| 19 | 18 | oveq1i 7400 | . . . . . . . 8 ⊢ (((-1 ·ℎ 𝐶) +ℎ 𝐶) +ℎ (-1 ·ℎ 𝐵)) = (0ℎ +ℎ (-1 ·ℎ 𝐵)) |
| 20 | ax-hv0cl 30939 | . . . . . . . . 9 ⊢ 0ℎ ∈ ℋ | |
| 21 | 20, 10 | hvcomi 30955 | . . . . . . . 8 ⊢ (0ℎ +ℎ (-1 ·ℎ 𝐵)) = ((-1 ·ℎ 𝐵) +ℎ 0ℎ) |
| 22 | ax-hvaddid 30940 | . . . . . . . . 9 ⊢ ((-1 ·ℎ 𝐵) ∈ ℋ → ((-1 ·ℎ 𝐵) +ℎ 0ℎ) = (-1 ·ℎ 𝐵)) | |
| 23 | 10, 22 | ax-mp 5 | . . . . . . . 8 ⊢ ((-1 ·ℎ 𝐵) +ℎ 0ℎ) = (-1 ·ℎ 𝐵) |
| 24 | 19, 21, 23 | 3eqtri 2757 | . . . . . . 7 ⊢ (((-1 ·ℎ 𝐶) +ℎ 𝐶) +ℎ (-1 ·ℎ 𝐵)) = (-1 ·ℎ 𝐵) |
| 25 | 13, 24 | eqtr3i 2755 | . . . . . 6 ⊢ ((-1 ·ℎ 𝐶) +ℎ (𝐶 +ℎ (-1 ·ℎ 𝐵))) = (-1 ·ℎ 𝐵) |
| 26 | 25 | oveq2i 7401 | . . . . 5 ⊢ (𝐴 +ℎ ((-1 ·ℎ 𝐶) +ℎ (𝐶 +ℎ (-1 ·ℎ 𝐵)))) = (𝐴 +ℎ (-1 ·ℎ 𝐵)) |
| 27 | 7, 12, 26 | 3eqtri 2757 | . . . 4 ⊢ ((𝐴 −ℎ 𝐶) +ℎ (𝐶 −ℎ 𝐵)) = (𝐴 +ℎ (-1 ·ℎ 𝐵)) |
| 28 | 3, 27 | eqtr4i 2756 | . . 3 ⊢ (𝐴 −ℎ 𝐵) = ((𝐴 −ℎ 𝐶) +ℎ (𝐶 −ℎ 𝐵)) |
| 29 | 28 | fveq2i 6864 | . 2 ⊢ (normℎ‘(𝐴 −ℎ 𝐵)) = (normℎ‘((𝐴 −ℎ 𝐶) +ℎ (𝐶 −ℎ 𝐵))) |
| 30 | 1, 4 | hvsubcli 30957 | . . 3 ⊢ (𝐴 −ℎ 𝐶) ∈ ℋ |
| 31 | 4, 2 | hvsubcli 30957 | . . 3 ⊢ (𝐶 −ℎ 𝐵) ∈ ℋ |
| 32 | 30, 31 | norm-ii-i 31073 | . 2 ⊢ (normℎ‘((𝐴 −ℎ 𝐶) +ℎ (𝐶 −ℎ 𝐵))) ≤ ((normℎ‘(𝐴 −ℎ 𝐶)) + (normℎ‘(𝐶 −ℎ 𝐵))) |
| 33 | 29, 32 | eqbrtri 5131 | 1 ⊢ (normℎ‘(𝐴 −ℎ 𝐵)) ≤ ((normℎ‘(𝐴 −ℎ 𝐶)) + (normℎ‘(𝐶 −ℎ 𝐵))) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ∈ wcel 2109 class class class wbr 5110 ‘cfv 6514 (class class class)co 7390 1c1 11076 + caddc 11078 ≤ cle 11216 -cneg 11413 ℋchba 30855 +ℎ cva 30856 ·ℎ csm 30857 normℎcno 30859 0ℎc0v 30860 −ℎ cmv 30861 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 ax-cnex 11131 ax-resscn 11132 ax-1cn 11133 ax-icn 11134 ax-addcl 11135 ax-addrcl 11136 ax-mulcl 11137 ax-mulrcl 11138 ax-mulcom 11139 ax-addass 11140 ax-mulass 11141 ax-distr 11142 ax-i2m1 11143 ax-1ne0 11144 ax-1rid 11145 ax-rnegex 11146 ax-rrecex 11147 ax-cnre 11148 ax-pre-lttri 11149 ax-pre-lttrn 11150 ax-pre-ltadd 11151 ax-pre-mulgt0 11152 ax-pre-sup 11153 ax-hfvadd 30936 ax-hvcom 30937 ax-hvass 30938 ax-hv0cl 30939 ax-hvaddid 30940 ax-hfvmul 30941 ax-hvmulid 30942 ax-hvmulass 30943 ax-hvdistr2 30945 ax-hvmul0 30946 ax-hfi 31015 ax-his1 31018 ax-his2 31019 ax-his3 31020 ax-his4 31021 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-rmo 3356 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-pss 3937 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-iun 4960 df-br 5111 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5536 df-eprel 5541 df-po 5549 df-so 5550 df-fr 5594 df-we 5596 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-pred 6277 df-ord 6338 df-on 6339 df-lim 6340 df-suc 6341 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-f1 6519 df-fo 6520 df-f1o 6521 df-fv 6522 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-om 7846 df-2nd 7972 df-frecs 8263 df-wrecs 8294 df-recs 8343 df-rdg 8381 df-er 8674 df-en 8922 df-dom 8923 df-sdom 8924 df-sup 9400 df-pnf 11217 df-mnf 11218 df-xr 11219 df-ltxr 11220 df-le 11221 df-sub 11414 df-neg 11415 df-div 11843 df-nn 12194 df-2 12256 df-3 12257 df-4 12258 df-n0 12450 df-z 12537 df-uz 12801 df-rp 12959 df-seq 13974 df-exp 14034 df-cj 15072 df-re 15073 df-im 15074 df-sqrt 15208 df-abs 15209 df-hnorm 30904 df-hvsub 30907 |
| This theorem is referenced by: norm3adifii 31084 norm3lem 31085 norm3dif 31086 |
| Copyright terms: Public domain | W3C validator |