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Mirrors > Home > MPE Home > Th. List > dvid | Structured version Visualization version GIF version |
Description: Derivative of the identity function. (Contributed by Mario Carneiro, 8-Aug-2014.) (Revised by Mario Carneiro, 9-Feb-2015.) |
Ref | Expression |
---|---|
dvid | ⊢ (ℂ D ( I ↾ ℂ)) = (ℂ × {1}) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | f1oi 6754 | . . . 4 ⊢ ( I ↾ ℂ):ℂ–1-1-onto→ℂ | |
2 | f1of 6716 | . . . 4 ⊢ (( I ↾ ℂ):ℂ–1-1-onto→ℂ → ( I ↾ ℂ):ℂ⟶ℂ) | |
3 | 1, 2 | mp1i 13 | . . 3 ⊢ (⊤ → ( I ↾ ℂ):ℂ⟶ℂ) |
4 | simp2 1136 | . . . . . 6 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 ≠ 𝑥) → 𝑧 ∈ ℂ) | |
5 | simp1 1135 | . . . . . 6 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 ≠ 𝑥) → 𝑥 ∈ ℂ) | |
6 | 4, 5 | subcld 11332 | . . . . 5 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 ≠ 𝑥) → (𝑧 − 𝑥) ∈ ℂ) |
7 | simp3 1137 | . . . . . 6 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 ≠ 𝑥) → 𝑧 ≠ 𝑥) | |
8 | 4, 5, 7 | subne0d 11341 | . . . . 5 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 ≠ 𝑥) → (𝑧 − 𝑥) ≠ 0) |
9 | fvresi 7045 | . . . . . . 7 ⊢ (𝑧 ∈ ℂ → (( I ↾ ℂ)‘𝑧) = 𝑧) | |
10 | fvresi 7045 | . . . . . . 7 ⊢ (𝑥 ∈ ℂ → (( I ↾ ℂ)‘𝑥) = 𝑥) | |
11 | 9, 10 | oveqan12rd 7295 | . . . . . 6 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ) → ((( I ↾ ℂ)‘𝑧) − (( I ↾ ℂ)‘𝑥)) = (𝑧 − 𝑥)) |
12 | 11 | 3adant3 1131 | . . . . 5 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 ≠ 𝑥) → ((( I ↾ ℂ)‘𝑧) − (( I ↾ ℂ)‘𝑥)) = (𝑧 − 𝑥)) |
13 | 6, 8, 12 | diveq1bd 11799 | . . . 4 ⊢ ((𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 ≠ 𝑥) → (((( I ↾ ℂ)‘𝑧) − (( I ↾ ℂ)‘𝑥)) / (𝑧 − 𝑥)) = 1) |
14 | 13 | adantl 482 | . . 3 ⊢ ((⊤ ∧ (𝑥 ∈ ℂ ∧ 𝑧 ∈ ℂ ∧ 𝑧 ≠ 𝑥)) → (((( I ↾ ℂ)‘𝑧) − (( I ↾ ℂ)‘𝑥)) / (𝑧 − 𝑥)) = 1) |
15 | ax-1cn 10929 | . . 3 ⊢ 1 ∈ ℂ | |
16 | 3, 14, 15 | dvidlem 25079 | . 2 ⊢ (⊤ → (ℂ D ( I ↾ ℂ)) = (ℂ × {1})) |
17 | 16 | mptru 1546 | 1 ⊢ (ℂ D ( I ↾ ℂ)) = (ℂ × {1}) |
Colors of variables: wff setvar class |
Syntax hints: ∧ w3a 1086 = wceq 1539 ⊤wtru 1540 ∈ wcel 2106 ≠ wne 2943 {csn 4561 I cid 5488 × cxp 5587 ↾ cres 5591 ⟶wf 6429 –1-1-onto→wf1o 6432 ‘cfv 6433 (class class class)co 7275 ℂcc 10869 1c1 10872 − cmin 11205 / cdiv 11632 D cdv 25027 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 ax-pre-sup 10949 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-tp 4566 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-iin 4927 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-er 8498 df-map 8617 df-pm 8618 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-fi 9170 df-sup 9201 df-inf 9202 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-3 12037 df-4 12038 df-5 12039 df-6 12040 df-7 12041 df-8 12042 df-9 12043 df-n0 12234 df-z 12320 df-dec 12438 df-uz 12583 df-q 12689 df-rp 12731 df-xneg 12848 df-xadd 12849 df-xmul 12850 df-icc 13086 df-fz 13240 df-seq 13722 df-exp 13783 df-cj 14810 df-re 14811 df-im 14812 df-sqrt 14946 df-abs 14947 df-struct 16848 df-slot 16883 df-ndx 16895 df-base 16913 df-plusg 16975 df-mulr 16976 df-starv 16977 df-tset 16981 df-ple 16982 df-ds 16984 df-unif 16985 df-rest 17133 df-topn 17134 df-topgen 17154 df-psmet 20589 df-xmet 20590 df-met 20591 df-bl 20592 df-mopn 20593 df-fbas 20594 df-fg 20595 df-cnfld 20598 df-top 22043 df-topon 22060 df-topsp 22082 df-bases 22096 df-cld 22170 df-ntr 22171 df-cls 22172 df-nei 22249 df-lp 22287 df-perf 22288 df-cn 22378 df-cnp 22379 df-haus 22466 df-fil 22997 df-fm 23089 df-flim 23090 df-flf 23091 df-xms 23473 df-ms 23474 df-cncf 24041 df-limc 25030 df-dv 25031 |
This theorem is referenced by: dvexp 25117 dvmptid 25121 dvsid 41949 |
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