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Mirrors > Home > HSE Home > Th. List > 0lnfn | Structured version Visualization version GIF version |
Description: The identically zero function is a linear Hilbert space functional. (Contributed by NM, 14-Feb-2006.) (New usage is discouraged.) |
Ref | Expression |
---|---|
0lnfn | ⊢ ( ℋ × {0}) ∈ LinFn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0cn 10633 | . . 3 ⊢ 0 ∈ ℂ | |
2 | 1 | fconst6 6569 | . 2 ⊢ ( ℋ × {0}): ℋ⟶ℂ |
3 | hvmulcl 28790 | . . . . . . 7 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) → (𝑥 ·ℎ 𝑦) ∈ ℋ) | |
4 | hvaddcl 28789 | . . . . . . 7 ⊢ (((𝑥 ·ℎ 𝑦) ∈ ℋ ∧ 𝑧 ∈ ℋ) → ((𝑥 ·ℎ 𝑦) +ℎ 𝑧) ∈ ℋ) | |
5 | 3, 4 | sylan 582 | . . . . . 6 ⊢ (((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) ∧ 𝑧 ∈ ℋ) → ((𝑥 ·ℎ 𝑦) +ℎ 𝑧) ∈ ℋ) |
6 | c0ex 10635 | . . . . . . 7 ⊢ 0 ∈ V | |
7 | 6 | fvconst2 6966 | . . . . . 6 ⊢ (((𝑥 ·ℎ 𝑦) +ℎ 𝑧) ∈ ℋ → (( ℋ × {0})‘((𝑥 ·ℎ 𝑦) +ℎ 𝑧)) = 0) |
8 | 5, 7 | syl 17 | . . . . 5 ⊢ (((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) ∧ 𝑧 ∈ ℋ) → (( ℋ × {0})‘((𝑥 ·ℎ 𝑦) +ℎ 𝑧)) = 0) |
9 | 6 | fvconst2 6966 | . . . . . . . . 9 ⊢ (𝑦 ∈ ℋ → (( ℋ × {0})‘𝑦) = 0) |
10 | 9 | oveq2d 7172 | . . . . . . . 8 ⊢ (𝑦 ∈ ℋ → (𝑥 · (( ℋ × {0})‘𝑦)) = (𝑥 · 0)) |
11 | mul01 10819 | . . . . . . . 8 ⊢ (𝑥 ∈ ℂ → (𝑥 · 0) = 0) | |
12 | 10, 11 | sylan9eqr 2878 | . . . . . . 7 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) → (𝑥 · (( ℋ × {0})‘𝑦)) = 0) |
13 | 6 | fvconst2 6966 | . . . . . . 7 ⊢ (𝑧 ∈ ℋ → (( ℋ × {0})‘𝑧) = 0) |
14 | 12, 13 | oveqan12d 7175 | . . . . . 6 ⊢ (((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) ∧ 𝑧 ∈ ℋ) → ((𝑥 · (( ℋ × {0})‘𝑦)) + (( ℋ × {0})‘𝑧)) = (0 + 0)) |
15 | 00id 10815 | . . . . . 6 ⊢ (0 + 0) = 0 | |
16 | 14, 15 | syl6eq 2872 | . . . . 5 ⊢ (((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) ∧ 𝑧 ∈ ℋ) → ((𝑥 · (( ℋ × {0})‘𝑦)) + (( ℋ × {0})‘𝑧)) = 0) |
17 | 8, 16 | eqtr4d 2859 | . . . 4 ⊢ (((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) ∧ 𝑧 ∈ ℋ) → (( ℋ × {0})‘((𝑥 ·ℎ 𝑦) +ℎ 𝑧)) = ((𝑥 · (( ℋ × {0})‘𝑦)) + (( ℋ × {0})‘𝑧))) |
18 | 17 | 3impa 1106 | . . 3 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ ∧ 𝑧 ∈ ℋ) → (( ℋ × {0})‘((𝑥 ·ℎ 𝑦) +ℎ 𝑧)) = ((𝑥 · (( ℋ × {0})‘𝑦)) + (( ℋ × {0})‘𝑧))) |
19 | 18 | rgen3 3204 | . 2 ⊢ ∀𝑥 ∈ ℂ ∀𝑦 ∈ ℋ ∀𝑧 ∈ ℋ (( ℋ × {0})‘((𝑥 ·ℎ 𝑦) +ℎ 𝑧)) = ((𝑥 · (( ℋ × {0})‘𝑦)) + (( ℋ × {0})‘𝑧)) |
20 | ellnfn 29660 | . 2 ⊢ (( ℋ × {0}) ∈ LinFn ↔ (( ℋ × {0}): ℋ⟶ℂ ∧ ∀𝑥 ∈ ℂ ∀𝑦 ∈ ℋ ∀𝑧 ∈ ℋ (( ℋ × {0})‘((𝑥 ·ℎ 𝑦) +ℎ 𝑧)) = ((𝑥 · (( ℋ × {0})‘𝑦)) + (( ℋ × {0})‘𝑧)))) | |
21 | 2, 19, 20 | mpbir2an 709 | 1 ⊢ ( ℋ × {0}) ∈ LinFn |
Colors of variables: wff setvar class |
Syntax hints: ∧ wa 398 = wceq 1537 ∈ wcel 2114 ∀wral 3138 {csn 4567 × cxp 5553 ⟶wf 6351 ‘cfv 6355 (class class class)co 7156 ℂcc 10535 0cc0 10537 + caddc 10540 · cmul 10542 ℋchba 28696 +ℎ cva 28697 ·ℎ csm 28698 LinFnclf 28731 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 ax-cnex 10593 ax-resscn 10594 ax-1cn 10595 ax-icn 10596 ax-addcl 10597 ax-addrcl 10598 ax-mulcl 10599 ax-mulrcl 10600 ax-mulcom 10601 ax-addass 10602 ax-mulass 10603 ax-distr 10604 ax-i2m1 10605 ax-1ne0 10606 ax-1rid 10607 ax-rnegex 10608 ax-rrecex 10609 ax-cnre 10610 ax-pre-lttri 10611 ax-pre-lttrn 10612 ax-pre-ltadd 10613 ax-hilex 28776 ax-hfvadd 28777 ax-hfvmul 28782 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4839 df-iun 4921 df-br 5067 df-opab 5129 df-mpt 5147 df-id 5460 df-po 5474 df-so 5475 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-iota 6314 df-fun 6357 df-fn 6358 df-f 6359 df-f1 6360 df-fo 6361 df-f1o 6362 df-fv 6363 df-ov 7159 df-oprab 7160 df-mpo 7161 df-er 8289 df-map 8408 df-en 8510 df-dom 8511 df-sdom 8512 df-pnf 10677 df-mnf 10678 df-ltxr 10680 df-lnfn 29625 |
This theorem is referenced by: nmfn0 29764 lnfn0 29824 lnfnmul 29825 nmbdfnlb 29827 nmcfnex 29830 nmcfnlb 29831 lnfncon 29833 riesz4 29841 riesz1 29842 |
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