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| Mirrors > Home > MPE Home > Th. List > ofsubge0 | Structured version Visualization version GIF version | ||
| Description: Function analogue of subge0 11662. (Contributed by Mario Carneiro, 24-Jul-2014.) |
| Ref | Expression |
|---|---|
| ofsubge0 | ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → ((𝐴 × {0}) ∘r ≤ (𝐹 ∘f − 𝐺) ↔ 𝐺 ∘r ≤ 𝐹)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simp2 1138 | . . . . 5 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → 𝐹:𝐴⟶ℝ) | |
| 2 | 1 | ffvelcdmda 7038 | . . . 4 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) ∈ ℝ) |
| 3 | simp3 1139 | . . . . 5 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → 𝐺:𝐴⟶ℝ) | |
| 4 | 3 | ffvelcdmda 7038 | . . . 4 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) ∧ 𝑥 ∈ 𝐴) → (𝐺‘𝑥) ∈ ℝ) |
| 5 | 2, 4 | subge0d 11739 | . . 3 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) ∧ 𝑥 ∈ 𝐴) → (0 ≤ ((𝐹‘𝑥) − (𝐺‘𝑥)) ↔ (𝐺‘𝑥) ≤ (𝐹‘𝑥))) |
| 6 | 5 | ralbidva 3159 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → (∀𝑥 ∈ 𝐴 0 ≤ ((𝐹‘𝑥) − (𝐺‘𝑥)) ↔ ∀𝑥 ∈ 𝐴 (𝐺‘𝑥) ≤ (𝐹‘𝑥))) |
| 7 | 0cn 11136 | . . . 4 ⊢ 0 ∈ ℂ | |
| 8 | fnconstg 6730 | . . . 4 ⊢ (0 ∈ ℂ → (𝐴 × {0}) Fn 𝐴) | |
| 9 | 7, 8 | mp1i 13 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → (𝐴 × {0}) Fn 𝐴) |
| 10 | 1 | ffnd 6671 | . . . 4 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → 𝐹 Fn 𝐴) |
| 11 | 3 | ffnd 6671 | . . . 4 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → 𝐺 Fn 𝐴) |
| 12 | simp1 1137 | . . . 4 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → 𝐴 ∈ 𝑉) | |
| 13 | inidm 4181 | . . . 4 ⊢ (𝐴 ∩ 𝐴) = 𝐴 | |
| 14 | 10, 11, 12, 12, 13 | offn 7645 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → (𝐹 ∘f − 𝐺) Fn 𝐴) |
| 15 | c0ex 11138 | . . . . 5 ⊢ 0 ∈ V | |
| 16 | 15 | fvconst2 7160 | . . . 4 ⊢ (𝑥 ∈ 𝐴 → ((𝐴 × {0})‘𝑥) = 0) |
| 17 | 16 | adantl 481 | . . 3 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) ∧ 𝑥 ∈ 𝐴) → ((𝐴 × {0})‘𝑥) = 0) |
| 18 | eqidd 2738 | . . . 4 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) = (𝐹‘𝑥)) | |
| 19 | eqidd 2738 | . . . 4 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) ∧ 𝑥 ∈ 𝐴) → (𝐺‘𝑥) = (𝐺‘𝑥)) | |
| 20 | 10, 11, 12, 12, 13, 18, 19 | ofval 7643 | . . 3 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) ∧ 𝑥 ∈ 𝐴) → ((𝐹 ∘f − 𝐺)‘𝑥) = ((𝐹‘𝑥) − (𝐺‘𝑥))) |
| 21 | 9, 14, 12, 12, 13, 17, 20 | ofrfval 7642 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → ((𝐴 × {0}) ∘r ≤ (𝐹 ∘f − 𝐺) ↔ ∀𝑥 ∈ 𝐴 0 ≤ ((𝐹‘𝑥) − (𝐺‘𝑥)))) |
| 22 | 11, 10, 12, 12, 13, 19, 18 | ofrfval 7642 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → (𝐺 ∘r ≤ 𝐹 ↔ ∀𝑥 ∈ 𝐴 (𝐺‘𝑥) ≤ (𝐹‘𝑥))) |
| 23 | 6, 21, 22 | 3bitr4d 311 | 1 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → ((𝐴 × {0}) ∘r ≤ (𝐹 ∘f − 𝐺) ↔ 𝐺 ∘r ≤ 𝐹)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 ∀wral 3052 {csn 4582 class class class wbr 5100 × cxp 5630 Fn wfn 6495 ⟶wf 6496 ‘cfv 6500 (class class class)co 7368 ∘f cof 7630 ∘r cofr 7631 ℂcc 11036 ℝcr 11037 0cc0 11038 ≤ cle 11179 − cmin 11376 |
| 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 |
| 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-of 7632 df-ofr 7633 df-er 8645 df-en 8896 df-dom 8897 df-sdom 8898 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 |
| This theorem is referenced by: (None) |
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