Mathbox for Thierry Arnoux |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > zrhre | Structured version Visualization version GIF version |
Description: The ℤRHom homomorphism for the real number structure is the identity. (Contributed by Thierry Arnoux, 31-Oct-2017.) |
Ref | Expression |
---|---|
zrhre | ⊢ (ℤRHom‘ℝfld) = ( I ↾ ℤ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1re 10635 | . . . . 5 ⊢ 1 ∈ ℝ | |
2 | remulg 20745 | . . . . 5 ⊢ ((𝑛 ∈ ℤ ∧ 1 ∈ ℝ) → (𝑛(.g‘ℝfld)1) = (𝑛 · 1)) | |
3 | 1, 2 | mpan2 689 | . . . 4 ⊢ (𝑛 ∈ ℤ → (𝑛(.g‘ℝfld)1) = (𝑛 · 1)) |
4 | zre 11979 | . . . . 5 ⊢ (𝑛 ∈ ℤ → 𝑛 ∈ ℝ) | |
5 | ax-1rid 10601 | . . . . 5 ⊢ (𝑛 ∈ ℝ → (𝑛 · 1) = 𝑛) | |
6 | 4, 5 | syl 17 | . . . 4 ⊢ (𝑛 ∈ ℤ → (𝑛 · 1) = 𝑛) |
7 | 3, 6 | eqtrd 2856 | . . 3 ⊢ (𝑛 ∈ ℤ → (𝑛(.g‘ℝfld)1) = 𝑛) |
8 | 7 | mpteq2ia 5150 | . 2 ⊢ (𝑛 ∈ ℤ ↦ (𝑛(.g‘ℝfld)1)) = (𝑛 ∈ ℤ ↦ 𝑛) |
9 | resubdrg 20746 | . . . 4 ⊢ (ℝ ∈ (SubRing‘ℂfld) ∧ ℝfld ∈ DivRing) | |
10 | 9 | simpri 488 | . . 3 ⊢ ℝfld ∈ DivRing |
11 | drngring 19503 | . . 3 ⊢ (ℝfld ∈ DivRing → ℝfld ∈ Ring) | |
12 | eqid 2821 | . . . 4 ⊢ (ℤRHom‘ℝfld) = (ℤRHom‘ℝfld) | |
13 | eqid 2821 | . . . 4 ⊢ (.g‘ℝfld) = (.g‘ℝfld) | |
14 | re1r 20751 | . . . 4 ⊢ 1 = (1r‘ℝfld) | |
15 | 12, 13, 14 | zrhval2 20650 | . . 3 ⊢ (ℝfld ∈ Ring → (ℤRHom‘ℝfld) = (𝑛 ∈ ℤ ↦ (𝑛(.g‘ℝfld)1))) |
16 | 10, 11, 15 | mp2b 10 | . 2 ⊢ (ℤRHom‘ℝfld) = (𝑛 ∈ ℤ ↦ (𝑛(.g‘ℝfld)1)) |
17 | mptresid 5913 | . 2 ⊢ ( I ↾ ℤ) = (𝑛 ∈ ℤ ↦ 𝑛) | |
18 | 8, 16, 17 | 3eqtr4i 2854 | 1 ⊢ (ℤRHom‘ℝfld) = ( I ↾ ℤ) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1533 ∈ wcel 2110 ↦ cmpt 5139 I cid 5454 ↾ cres 5552 ‘cfv 6350 (class class class)co 7150 ℝcr 10530 1c1 10532 · cmul 10536 ℤcz 11975 .gcmg 18218 Ringcrg 19291 DivRingcdr 19496 SubRingcsubrg 19525 ℂfldccnfld 20539 ℤRHomczrh 20641 ℝfldcrefld 20742 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2156 ax-12 2172 ax-ext 2793 ax-rep 5183 ax-sep 5196 ax-nul 5203 ax-pow 5259 ax-pr 5322 ax-un 7455 ax-cnex 10587 ax-resscn 10588 ax-1cn 10589 ax-icn 10590 ax-addcl 10591 ax-addrcl 10592 ax-mulcl 10593 ax-mulrcl 10594 ax-mulcom 10595 ax-addass 10596 ax-mulass 10597 ax-distr 10598 ax-i2m1 10599 ax-1ne0 10600 ax-1rid 10601 ax-rnegex 10602 ax-rrecex 10603 ax-cnre 10604 ax-pre-lttri 10605 ax-pre-lttrn 10606 ax-pre-ltadd 10607 ax-pre-mulgt0 10608 ax-addf 10610 ax-mulf 10611 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 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-reu 3145 df-rmo 3146 df-rab 3147 df-v 3497 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-pss 3954 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4562 df-pr 4564 df-tp 4566 df-op 4568 df-uni 4833 df-int 4870 df-iun 4914 df-br 5060 df-opab 5122 df-mpt 5140 df-tr 5166 df-id 5455 df-eprel 5460 df-po 5469 df-so 5470 df-fr 5509 df-we 5511 df-xp 5556 df-rel 5557 df-cnv 5558 df-co 5559 df-dm 5560 df-rn 5561 df-res 5562 df-ima 5563 df-pred 6143 df-ord 6189 df-on 6190 df-lim 6191 df-suc 6192 df-iota 6309 df-fun 6352 df-fn 6353 df-f 6354 df-f1 6355 df-fo 6356 df-f1o 6357 df-fv 6358 df-riota 7108 df-ov 7153 df-oprab 7154 df-mpo 7155 df-om 7575 df-1st 7683 df-2nd 7684 df-tpos 7886 df-wrecs 7941 df-recs 8002 df-rdg 8040 df-1o 8096 df-oadd 8100 df-er 8283 df-map 8402 df-en 8504 df-dom 8505 df-sdom 8506 df-fin 8507 df-pnf 10671 df-mnf 10672 df-xr 10673 df-ltxr 10674 df-le 10675 df-sub 10866 df-neg 10867 df-div 11292 df-nn 11633 df-2 11694 df-3 11695 df-4 11696 df-5 11697 df-6 11698 df-7 11699 df-8 11700 df-9 11701 df-n0 11892 df-z 11976 df-dec 12093 df-uz 12238 df-fz 12887 df-seq 13364 df-struct 16479 df-ndx 16480 df-slot 16481 df-base 16483 df-sets 16484 df-ress 16485 df-plusg 16572 df-mulr 16573 df-starv 16574 df-tset 16578 df-ple 16579 df-ds 16581 df-unif 16582 df-0g 16709 df-mgm 17846 df-sgrp 17895 df-mnd 17906 df-mhm 17950 df-grp 18100 df-minusg 18101 df-mulg 18219 df-subg 18270 df-ghm 18350 df-cmn 18902 df-mgp 19234 df-ur 19246 df-ring 19293 df-cring 19294 df-oppr 19367 df-dvdsr 19385 df-unit 19386 df-invr 19416 df-dvr 19427 df-rnghom 19461 df-drng 19498 df-subrg 19527 df-cnfld 20540 df-zring 20612 df-zrh 20645 df-refld 20743 |
This theorem is referenced by: qqhre 31256 |
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