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Mirrors > Home > ILE Home > Th. List > dvid | GIF version |
Description: Derivative of the identity function. (Contributed by Mario Carneiro, 8-Aug-2014.) (Revised by Jim Kingdon, 2-Aug-2023.) |
Ref | Expression |
---|---|
dvid | ⊢ (ℂ D ( I ↾ ℂ)) = (ℂ × {1}) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | f1oi 5480 | . . . 4 ⊢ ( I ↾ ℂ):ℂ–1-1-onto→ℂ | |
2 | f1of 5442 | . . . 4 ⊢ (( I ↾ ℂ):ℂ–1-1-onto→ℂ → ( I ↾ ℂ):ℂ⟶ℂ) | |
3 | 1, 2 | mp1i 10 | . . 3 ⊢ (⊤ → ( I ↾ ℂ):ℂ⟶ℂ) |
4 | simp2 993 | . . . . . 6 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 # 𝑥) → 𝑧 ∈ ℂ) | |
5 | simp1 992 | . . . . . 6 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 # 𝑥) → 𝑥 ∈ ℂ) | |
6 | 4, 5 | subcld 8230 | . . . . 5 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 # 𝑥) → (𝑧 − 𝑥) ∈ ℂ) |
7 | simp3 994 | . . . . . 6 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 # 𝑥) → 𝑧 # 𝑥) | |
8 | 4, 5, 7 | subap0d 8563 | . . . . 5 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 # 𝑥) → (𝑧 − 𝑥) # 0) |
9 | fvresi 5689 | . . . . . . 7 ⊢ (𝑧 ∈ ℂ → (( I ↾ ℂ)‘𝑧) = 𝑧) | |
10 | fvresi 5689 | . . . . . . 7 ⊢ (𝑥 ∈ ℂ → (( I ↾ ℂ)‘𝑥) = 𝑥) | |
11 | 9, 10 | oveqan12rd 5873 | . . . . . 6 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ) → ((( I ↾ ℂ)‘𝑧) − (( I ↾ ℂ)‘𝑥)) = (𝑧 − 𝑥)) |
12 | 11 | 3adant3 1012 | . . . . 5 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 # 𝑥) → ((( I ↾ ℂ)‘𝑧) − (( I ↾ ℂ)‘𝑥)) = (𝑧 − 𝑥)) |
13 | 6, 8, 12 | diveqap1bd 8753 | . . . 4 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 # 𝑥) → (((( I ↾ ℂ)‘𝑧) − (( I ↾ ℂ)‘𝑥)) / (𝑧 − 𝑥)) = 1) |
14 | 13 | adantl 275 | . . 3 ⊢ ((⊤ ∧ (𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 # 𝑥)) → (((( I ↾ ℂ)‘𝑧) − (( I ↾ ℂ)‘𝑥)) / (𝑧 − 𝑥)) = 1) |
15 | ax-1cn 7867 | . . 3 ⊢ 1 ∈ ℂ | |
16 | 3, 14, 15 | dvidlemap 13454 | . 2 ⊢ (⊤ → (ℂ D ( I ↾ ℂ)) = (ℂ × {1})) |
17 | 16 | mptru 1357 | 1 ⊢ (ℂ D ( I ↾ ℂ)) = (ℂ × {1}) |
Colors of variables: wff set class |
Syntax hints: ∧ w3a 973 = wceq 1348 ⊤wtru 1349 ∈ wcel 2141 {csn 3583 class class class wbr 3989 I cid 4273 × cxp 4609 ↾ cres 4613 ⟶wf 5194 –1-1-onto→wf1o 5197 ‘cfv 5198 (class class class)co 5853 ℂcc 7772 1c1 7775 − cmin 8090 # cap 8500 / cdiv 8589 D cdv 13418 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-coll 4104 ax-sep 4107 ax-nul 4115 ax-pow 4160 ax-pr 4194 ax-un 4418 ax-setind 4521 ax-iinf 4572 ax-cnex 7865 ax-resscn 7866 ax-1cn 7867 ax-1re 7868 ax-icn 7869 ax-addcl 7870 ax-addrcl 7871 ax-mulcl 7872 ax-mulrcl 7873 ax-addcom 7874 ax-mulcom 7875 ax-addass 7876 ax-mulass 7877 ax-distr 7878 ax-i2m1 7879 ax-0lt1 7880 ax-1rid 7881 ax-0id 7882 ax-rnegex 7883 ax-precex 7884 ax-cnre 7885 ax-pre-ltirr 7886 ax-pre-ltwlin 7887 ax-pre-lttrn 7888 ax-pre-apti 7889 ax-pre-ltadd 7890 ax-pre-mulgt0 7891 ax-pre-mulext 7892 ax-arch 7893 ax-caucvg 7894 |
This theorem depends on definitions: df-bi 116 df-stab 826 df-dc 830 df-3or 974 df-3an 975 df-tru 1351 df-fal 1354 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-nel 2436 df-ral 2453 df-rex 2454 df-reu 2455 df-rmo 2456 df-rab 2457 df-v 2732 df-sbc 2956 df-csb 3050 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-nul 3415 df-if 3527 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-int 3832 df-iun 3875 df-br 3990 df-opab 4051 df-mpt 4052 df-tr 4088 df-id 4278 df-po 4281 df-iso 4282 df-iord 4351 df-on 4353 df-ilim 4354 df-suc 4356 df-iom 4575 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-res 4623 df-ima 4624 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-f1 5203 df-fo 5204 df-f1o 5205 df-fv 5206 df-isom 5207 df-riota 5809 df-ov 5856 df-oprab 5857 df-mpo 5858 df-1st 6119 df-2nd 6120 df-recs 6284 df-frec 6370 df-map 6628 df-pm 6629 df-sup 6961 df-inf 6962 df-pnf 7956 df-mnf 7957 df-xr 7958 df-ltxr 7959 df-le 7960 df-sub 8092 df-neg 8093 df-reap 8494 df-ap 8501 df-div 8590 df-inn 8879 df-2 8937 df-3 8938 df-4 8939 df-n0 9136 df-z 9213 df-uz 9488 df-q 9579 df-rp 9611 df-xneg 9729 df-xadd 9730 df-seqfrec 10402 df-exp 10476 df-cj 10806 df-re 10807 df-im 10808 df-rsqrt 10962 df-abs 10963 df-rest 12581 df-topgen 12600 df-psmet 12781 df-xmet 12782 df-met 12783 df-bl 12784 df-mopn 12785 df-top 12790 df-topon 12803 df-bases 12835 df-ntr 12890 df-cn 12982 df-cnp 12983 df-cncf 13352 df-limced 13419 df-dvap 13420 |
This theorem is referenced by: dvexp 13469 dvmptidcn 13472 |
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