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Mirrors > Home > MPE Home > Th. List > cnfldsub | Structured version Visualization version GIF version |
Description: The subtraction operator in the field of complex numbers. (Contributed by Mario Carneiro, 15-Jun-2015.) |
Ref | Expression |
---|---|
cnfldsub | ⊢ − = (-g‘ℂfld) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cnfldbas 19571 | . . . . 5 ⊢ ℂ = (Base‘ℂfld) | |
2 | cnfldadd 19572 | . . . . 5 ⊢ + = (+g‘ℂfld) | |
3 | eqid 2610 | . . . . 5 ⊢ (invg‘ℂfld) = (invg‘ℂfld) | |
4 | eqid 2610 | . . . . 5 ⊢ (-g‘ℂfld) = (-g‘ℂfld) | |
5 | 1, 2, 3, 4 | grpsubval 17288 | . . . 4 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ) → (𝑥(-g‘ℂfld)𝑦) = (𝑥 + ((invg‘ℂfld)‘𝑦))) |
6 | cnfldneg 19591 | . . . . . 6 ⊢ (𝑦 ∈ ℂ → ((invg‘ℂfld)‘𝑦) = -𝑦) | |
7 | 6 | adantl 481 | . . . . 5 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ) → ((invg‘ℂfld)‘𝑦) = -𝑦) |
8 | 7 | oveq2d 6565 | . . . 4 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ) → (𝑥 + ((invg‘ℂfld)‘𝑦)) = (𝑥 + -𝑦)) |
9 | negsub 10208 | . . . 4 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ) → (𝑥 + -𝑦) = (𝑥 − 𝑦)) | |
10 | 5, 8, 9 | 3eqtrrd 2649 | . . 3 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ) → (𝑥 − 𝑦) = (𝑥(-g‘ℂfld)𝑦)) |
11 | 10 | mpt2eq3ia 6618 | . 2 ⊢ (𝑥 ∈ ℂ, 𝑦 ∈ ℂ ↦ (𝑥 − 𝑦)) = (𝑥 ∈ ℂ, 𝑦 ∈ ℂ ↦ (𝑥(-g‘ℂfld)𝑦)) |
12 | subf 10162 | . . . 4 ⊢ − :(ℂ × ℂ)⟶ℂ | |
13 | ffn 5958 | . . . 4 ⊢ ( − :(ℂ × ℂ)⟶ℂ → − Fn (ℂ × ℂ)) | |
14 | 12, 13 | ax-mp 5 | . . 3 ⊢ − Fn (ℂ × ℂ) |
15 | fnov 6666 | . . 3 ⊢ ( − Fn (ℂ × ℂ) ↔ − = (𝑥 ∈ ℂ, 𝑦 ∈ ℂ ↦ (𝑥 − 𝑦))) | |
16 | 14, 15 | mpbi 219 | . 2 ⊢ − = (𝑥 ∈ ℂ, 𝑦 ∈ ℂ ↦ (𝑥 − 𝑦)) |
17 | cnring 19587 | . . . . 5 ⊢ ℂfld ∈ Ring | |
18 | ringgrp 18375 | . . . . 5 ⊢ (ℂfld ∈ Ring → ℂfld ∈ Grp) | |
19 | 17, 18 | ax-mp 5 | . . . 4 ⊢ ℂfld ∈ Grp |
20 | 1, 4 | grpsubf 17317 | . . . 4 ⊢ (ℂfld ∈ Grp → (-g‘ℂfld):(ℂ × ℂ)⟶ℂ) |
21 | ffn 5958 | . . . 4 ⊢ ((-g‘ℂfld):(ℂ × ℂ)⟶ℂ → (-g‘ℂfld) Fn (ℂ × ℂ)) | |
22 | 19, 20, 21 | mp2b 10 | . . 3 ⊢ (-g‘ℂfld) Fn (ℂ × ℂ) |
23 | fnov 6666 | . . 3 ⊢ ((-g‘ℂfld) Fn (ℂ × ℂ) ↔ (-g‘ℂfld) = (𝑥 ∈ ℂ, 𝑦 ∈ ℂ ↦ (𝑥(-g‘ℂfld)𝑦))) | |
24 | 22, 23 | mpbi 219 | . 2 ⊢ (-g‘ℂfld) = (𝑥 ∈ ℂ, 𝑦 ∈ ℂ ↦ (𝑥(-g‘ℂfld)𝑦)) |
25 | 11, 16, 24 | 3eqtr4i 2642 | 1 ⊢ − = (-g‘ℂfld) |
Colors of variables: wff setvar class |
Syntax hints: ∧ wa 383 = wceq 1475 ∈ wcel 1977 × cxp 5036 Fn wfn 5799 ⟶wf 5800 ‘cfv 5804 (class class class)co 6549 ↦ cmpt2 6551 ℂcc 9813 + caddc 9818 − cmin 10145 -cneg 10146 Grpcgrp 17245 invgcminusg 17246 -gcsg 17247 Ringcrg 18370 ℂfldccnfld 19567 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-rep 4699 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 ax-addf 9894 ax-mulf 9895 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-int 4411 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-om 6958 df-1st 7059 df-2nd 7060 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-1o 7447 df-oadd 7451 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-fin 7845 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-nn 10898 df-2 10956 df-3 10957 df-4 10958 df-5 10959 df-6 10960 df-7 10961 df-8 10962 df-9 10963 df-n0 11170 df-z 11255 df-dec 11370 df-uz 11564 df-fz 12198 df-struct 15697 df-ndx 15698 df-slot 15699 df-base 15700 df-sets 15701 df-plusg 15781 df-mulr 15782 df-starv 15783 df-tset 15787 df-ple 15788 df-ds 15791 df-unif 15792 df-0g 15925 df-mgm 17065 df-sgrp 17107 df-mnd 17118 df-grp 17248 df-minusg 17249 df-sbg 17250 df-cmn 18018 df-mgp 18313 df-ring 18372 df-cring 18373 df-cnfld 19568 |
This theorem is referenced by: zndvds 19717 resubgval 19774 cnngp 22393 cnfldtgp 22480 clmsub 22688 clmsubcl 22694 cnindmet 22770 qqhucn 29364 zringsubgval 41977 |
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