Mathbox for Thierry Arnoux |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > kerlmhm | Structured version Visualization version GIF version |
Description: The kernel of a vector space homomorphism is a vector space itself. (Contributed by Thierry Arnoux, 7-May-2023.) |
Ref | Expression |
---|---|
kerlmhm.1 | ⊢ 0 = (0g‘𝑈) |
kerlmhm.k | ⊢ 𝐾 = (𝑉 ↾s (◡𝐹 “ { 0 })) |
Ref | Expression |
---|---|
kerlmhm | ⊢ ((𝑉 ∈ LVec ∧ 𝐹 ∈ (𝑉 LMHom 𝑈)) → 𝐾 ∈ LVec) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2821 | . . 3 ⊢ (◡𝐹 “ { 0 }) = (◡𝐹 “ { 0 }) | |
2 | kerlmhm.1 | . . 3 ⊢ 0 = (0g‘𝑈) | |
3 | eqid 2821 | . . 3 ⊢ (LSubSp‘𝑉) = (LSubSp‘𝑉) | |
4 | 1, 2, 3 | lmhmkerlss 19806 | . 2 ⊢ (𝐹 ∈ (𝑉 LMHom 𝑈) → (◡𝐹 “ { 0 }) ∈ (LSubSp‘𝑉)) |
5 | kerlmhm.k | . . 3 ⊢ 𝐾 = (𝑉 ↾s (◡𝐹 “ { 0 })) | |
6 | 5, 3 | lsslvec 19862 | . 2 ⊢ ((𝑉 ∈ LVec ∧ (◡𝐹 “ { 0 }) ∈ (LSubSp‘𝑉)) → 𝐾 ∈ LVec) |
7 | 4, 6 | sylan2 594 | 1 ⊢ ((𝑉 ∈ LVec ∧ 𝐹 ∈ (𝑉 LMHom 𝑈)) → 𝐾 ∈ LVec) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 = wceq 1537 ∈ wcel 2114 {csn 4553 ◡ccnv 5540 “ cima 5544 ‘cfv 6341 (class class class)co 7142 ↾s cress 16467 0gc0g 16696 LSubSpclss 19686 LMHom clmhm 19774 LVecclvec 19857 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-rep 5176 ax-sep 5189 ax-nul 5196 ax-pow 5252 ax-pr 5316 ax-un 7447 ax-cnex 10579 ax-resscn 10580 ax-1cn 10581 ax-icn 10582 ax-addcl 10583 ax-addrcl 10584 ax-mulcl 10585 ax-mulrcl 10586 ax-mulcom 10587 ax-addass 10588 ax-mulass 10589 ax-distr 10590 ax-i2m1 10591 ax-1ne0 10592 ax-1rid 10593 ax-rnegex 10594 ax-rrecex 10595 ax-cnre 10596 ax-pre-lttri 10597 ax-pre-lttrn 10598 ax-pre-ltadd 10599 ax-pre-mulgt0 10600 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 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 3488 df-sbc 3764 df-csb 3872 df-dif 3927 df-un 3929 df-in 3931 df-ss 3940 df-pss 3942 df-nul 4280 df-if 4454 df-pw 4527 df-sn 4554 df-pr 4556 df-tp 4558 df-op 4560 df-uni 4825 df-iun 4907 df-br 5053 df-opab 5115 df-mpt 5133 df-tr 5159 df-id 5446 df-eprel 5451 df-po 5460 df-so 5461 df-fr 5500 df-we 5502 df-xp 5547 df-rel 5548 df-cnv 5549 df-co 5550 df-dm 5551 df-rn 5552 df-res 5553 df-ima 5554 df-pred 6134 df-ord 6180 df-on 6181 df-lim 6182 df-suc 6183 df-iota 6300 df-fun 6343 df-fn 6344 df-f 6345 df-f1 6346 df-fo 6347 df-f1o 6348 df-fv 6349 df-riota 7100 df-ov 7145 df-oprab 7146 df-mpo 7147 df-om 7567 df-1st 7675 df-2nd 7676 df-wrecs 7933 df-recs 7994 df-rdg 8032 df-er 8275 df-en 8496 df-dom 8497 df-sdom 8498 df-pnf 10663 df-mnf 10664 df-xr 10665 df-ltxr 10666 df-le 10667 df-sub 10858 df-neg 10859 df-nn 11625 df-2 11687 df-3 11688 df-4 11689 df-5 11690 df-6 11691 df-ndx 16469 df-slot 16470 df-base 16472 df-sets 16473 df-ress 16474 df-plusg 16561 df-sca 16564 df-vsca 16565 df-0g 16698 df-mgm 17835 df-sgrp 17884 df-mnd 17895 df-grp 18089 df-minusg 18090 df-sbg 18091 df-subg 18259 df-ghm 18339 df-mgp 19223 df-ur 19235 df-ring 19282 df-lmod 19619 df-lss 19687 df-lmhm 19777 df-lvec 19858 |
This theorem is referenced by: dimkerim 31033 |
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