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| Mirrors > Home > MPE Home > Th. List > ofsubge0 | Structured version Visualization version GIF version | ||
| Description: Function analogue of subge0 11700. (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 1150 | . . . . 5 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → 𝐹:𝐴⟶ℝ) | |
| 2 | 1 | ffvelcdmda 7065 | . . . 4 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) ∈ ℝ) |
| 3 | simp3 1151 | . . . . 5 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → 𝐺:𝐴⟶ℝ) | |
| 4 | 3 | ffvelcdmda 7065 | . . . 4 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) ∧ 𝑥 ∈ 𝐴) → (𝐺‘𝑥) ∈ ℝ) |
| 5 | 2, 4 | subge0d 11777 | . . 3 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) ∧ 𝑥 ∈ 𝐴) → (0 ≤ ((𝐹‘𝑥) − (𝐺‘𝑥)) ↔ (𝐺‘𝑥) ≤ (𝐹‘𝑥))) |
| 6 | 5 | ralbidva 3183 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → (∀𝑥 ∈ 𝐴 0 ≤ ((𝐹‘𝑥) − (𝐺‘𝑥)) ↔ ∀𝑥 ∈ 𝐴 (𝐺‘𝑥) ≤ (𝐹‘𝑥))) |
| 7 | 0cn 11171 | . . . 4 ⊢ 0 ∈ ℂ | |
| 8 | fnconstg 6752 | . . . 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 6692 | . . . 4 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → 𝐹 Fn 𝐴) |
| 11 | 3 | ffnd 6692 | . . . 4 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → 𝐺 Fn 𝐴) |
| 12 | simp1 1149 | . . . 4 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → 𝐴 ∈ 𝑉) | |
| 13 | inidm 4178 | . . . 4 ⊢ (𝐴 ∩ 𝐴) = 𝐴 | |
| 14 | 10, 11, 12, 12, 13 | offn 7673 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → (𝐹 ∘f − 𝐺) Fn 𝐴) |
| 15 | c0ex 11173 | . . . . 5 ⊢ 0 ∈ V | |
| 16 | 15 | fvconst2 7188 | . . . 4 ⊢ (𝑥 ∈ 𝐴 → ((𝐴 × {0})‘𝑥) = 0) |
| 17 | 16 | adantl 485 | . . 3 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) ∧ 𝑥 ∈ 𝐴) → ((𝐴 × {0})‘𝑥) = 0) |
| 18 | eqidd 2763 | . . . 4 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) = (𝐹‘𝑥)) | |
| 19 | eqidd 2763 | . . . 4 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) ∧ 𝑥 ∈ 𝐴) → (𝐺‘𝑥) = (𝐺‘𝑥)) | |
| 20 | 10, 11, 12, 12, 13, 18, 19 | ofval 7671 | . . 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 7670 | . 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 7670 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℝ ∧ 𝐺:𝐴⟶ℝ) → (𝐺 ∘r ≤ 𝐹 ↔ ∀𝑥 ∈ 𝐴 (𝐺‘𝑥) ≤ (𝐹‘𝑥))) |
| 23 | 6, 21, 22 | 3bitr4d 313 | 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 208 ∧ wa 399 ∧ w3a 1098 = wceq 1560 ∈ wcel 2142 ∀wral 3076 {csn 4582 class class class wbr 5100 × cxp 5645 Fn wfn 6516 ⟶wf 6517 ‘cfv 6521 (class class class)co 7396 ∘f cof 7658 ∘r cofr 7659 ℂcc 11071 ℝcr 11072 0cc0 11073 ≤ cle 11217 − cmin 11414 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5227 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-addrcl 11134 ax-mulcl 11135 ax-mulrcl 11136 ax-mulcom 11137 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-i2m1 11141 ax-1ne0 11142 ax-1rid 11143 ax-rnegex 11144 ax-rrecex 11145 ax-cnre 11146 ax-pre-lttri 11147 ax-pre-lttrn 11148 ax-pre-ltadd 11149 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5542 df-po 5555 df-so 5556 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-of 7660 df-ofr 7661 df-er 8678 df-en 8928 df-dom 8929 df-sdom 8930 df-pnf 11218 df-mnf 11219 df-xr 11220 df-ltxr 11221 df-le 11222 df-sub 11416 df-neg 11417 |
| This theorem is referenced by: (None) |
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