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| Mirrors > Home > MPE Home > Th. List > mat1ov | Structured version Visualization version GIF version | ||
| Description: Entries of an identity matrix, deduction form. (Contributed by Stefan O'Rear, 10-Jul-2018.) |
| Ref | Expression |
|---|---|
| mat1.a | ⊢ 𝐴 = (𝑁 Mat 𝑅) |
| mat1.o | ⊢ 1 = (1r‘𝑅) |
| mat1.z | ⊢ 0 = (0g‘𝑅) |
| mat1ov.n | ⊢ (𝜑 → 𝑁 ∈ Fin) |
| mat1ov.r | ⊢ (𝜑 → 𝑅 ∈ Ring) |
| mat1ov.i | ⊢ (𝜑 → 𝐼 ∈ 𝑁) |
| mat1ov.j | ⊢ (𝜑 → 𝐽 ∈ 𝑁) |
| mat1ov.u | ⊢ 𝑈 = (1r‘𝐴) |
| Ref | Expression |
|---|---|
| mat1ov | ⊢ (𝜑 → (𝐼𝑈𝐽) = if(𝐼 = 𝐽, 1 , 0 )) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mat1ov.u | . . 3 ⊢ 𝑈 = (1r‘𝐴) | |
| 2 | mat1ov.n | . . . 4 ⊢ (𝜑 → 𝑁 ∈ Fin) | |
| 3 | mat1ov.r | . . . 4 ⊢ (𝜑 → 𝑅 ∈ Ring) | |
| 4 | mat1.a | . . . . 5 ⊢ 𝐴 = (𝑁 Mat 𝑅) | |
| 5 | mat1.o | . . . . 5 ⊢ 1 = (1r‘𝑅) | |
| 6 | mat1.z | . . . . 5 ⊢ 0 = (0g‘𝑅) | |
| 7 | 4, 5, 6 | mat1 22675 | . . . 4 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring) → (1r‘𝐴) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ if(𝑖 = 𝑗, 1 , 0 ))) |
| 8 | 2, 3, 7 | syl2anc 596 | . . 3 ⊢ (𝜑 → (1r‘𝐴) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ if(𝑖 = 𝑗, 1 , 0 ))) |
| 9 | 1, 8 | eqtrid 2809 | . 2 ⊢ (𝜑 → 𝑈 = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ if(𝑖 = 𝑗, 1 , 0 ))) |
| 10 | eqeq12 2779 | . . . 4 ⊢ ((𝑖 = 𝐼 ∧ 𝑗 = 𝐽) → (𝑖 = 𝑗 ↔ 𝐼 = 𝐽)) | |
| 11 | 10 | ifbid 4509 | . . 3 ⊢ ((𝑖 = 𝐼 ∧ 𝑗 = 𝐽) → if(𝑖 = 𝑗, 1 , 0 ) = if(𝐼 = 𝐽, 1 , 0 )) |
| 12 | 11 | adantl 487 | . 2 ⊢ ((𝜑 ∧ (𝑖 = 𝐼 ∧ 𝑗 = 𝐽)) → if(𝑖 = 𝑗, 1 , 0 ) = if(𝐼 = 𝐽, 1 , 0 )) |
| 13 | mat1ov.i | . 2 ⊢ (𝜑 → 𝐼 ∈ 𝑁) | |
| 14 | mat1ov.j | . 2 ⊢ (𝜑 → 𝐽 ∈ 𝑁) | |
| 15 | 5 | fvexi 6896 | . . . 4 ⊢ 1 ∈ V |
| 16 | 6 | fvexi 6896 | . . . 4 ⊢ 0 ∈ V |
| 17 | 15, 16 | ifex 4536 | . . 3 ⊢ if(𝐼 = 𝐽, 1 , 0 ) ∈ V |
| 18 | 17 | a1i 11 | . 2 ⊢ (𝜑 → if(𝐼 = 𝐽, 1 , 0 ) ∈ V) |
| 19 | 9, 12, 13, 14, 18 | ovmpod 7569 | 1 ⊢ (𝜑 → (𝐼𝑈𝐽) = if(𝐼 = 𝐽, 1 , 0 )) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 Vcvv 3453 ifcif 4485 ‘cfv 6537 (class class class)co 7417 ∈ cmpo 7419 Fincfn 8956 0gc0g 17530 1rcur 20326 Ringcrg 20378 Mat cmat 22635 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7740 ax-cnex 11184 ax-resscn 11185 ax-1cn 11186 ax-icn 11187 ax-addcl 11188 ax-addrcl 11189 ax-mulcl 11190 ax-mulrcl 11191 ax-mulcom 11192 ax-addass 11193 ax-mulass 11194 ax-distr 11195 ax-i2m1 11196 ax-1ne0 11197 ax-1rid 11198 ax-rnegex 11199 ax-rrecex 11200 ax-cnre 11201 ax-pre-lttri 11202 ax-pre-lttrn 11203 ax-pre-ltadd 11204 ax-pre-mulgt0 11205 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-tp 4592 df-op 4594 df-ot 4596 df-uni 4871 df-int 4911 df-iun 4956 df-iin 4957 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-se 5613 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-isom 6546 df-riota 7374 df-ov 7420 df-oprab 7421 df-mpo 7422 df-of 7682 df-om 7867 df-1st 7990 df-2nd 7991 df-supp 8163 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-rdg 8403 df-1o 8459 df-2o 8460 df-er 8700 df-map 8832 df-ixp 8909 df-en 8957 df-dom 8958 df-sdom 8959 df-fin 8960 df-fsupp 9336 df-sup 9416 df-oi 9486 df-card 9948 df-pnf 11273 df-mnf 11274 df-xr 11275 df-ltxr 11276 df-le 11277 df-sub 11471 df-neg 11472 df-nn 12262 df-2 12331 df-3 12332 df-4 12333 df-5 12334 df-6 12335 df-7 12336 df-8 12337 df-9 12338 df-n0 12533 df-z 12620 df-dec 12741 df-uz 12892 df-fz 13566 df-fzo 13714 df-seq 14070 df-hash 14399 df-struct 17245 df-sets 17262 df-slot 17280 df-ndx 17292 df-base 17308 df-ress 17329 df-plusg 17361 df-mulr 17362 df-sca 17364 df-vsca 17365 df-ip 17366 df-tset 17367 df-ple 17368 df-ds 17370 df-hom 17372 df-cco 17373 df-0g 17532 df-gsum 17533 df-prds 17538 df-pws 17540 df-mre 17676 df-mrc 17677 df-acs 17679 df-mgm 18736 df-sgrp 18827 df-mnd 18843 df-mhm 18897 df-submnd 18898 df-grp 19066 df-minusg 19067 df-sbg 19068 df-mulg 19197 df-subg 19252 df-ghm 19347 df-cntz 19450 df-cmn 19915 df-abl 19916 df-mgp 20280 df-rng 20294 df-ur 20327 df-ring 20380 df-subrg 20738 df-lmod 21052 df-lss 21122 df-sra 21363 df-rgmod 21364 df-dsmm 21951 df-frlm 21966 df-mamu 22619 df-mat 22636 |
| This theorem is used by: dmatid 22723 scmatscmide 22735 ma1repveval 22799 1marepvmarrepid 22803 1marepvsma1 22811 mdet1 22829 mdetunilem8 22847 matunitlindflem2 22908 pmat1ovd 22928 mat2pmat1 22963 chpmat1dlem 23066 chpdmatlem2 23070 chpdmatlem3 23071 chpidmat 23078 1smat1 34322 |
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