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| Mirrors > Home > MPE Home > Th. List > Mathboxes > smatcl | Structured version Visualization version GIF version | ||
| Description: Closure of the square submatrix: if 𝑀 is a square matrix of dimension 𝑁 with indices in (1...𝑁), then a submatrix of 𝑀 is of dimension (𝑁 − 1). (Contributed by Thierry Arnoux, 19-Aug-2020.) |
| Ref | Expression |
|---|---|
| smatcl.a | ⊢ 𝐴 = ((1...𝑁) Mat 𝑅) |
| smatcl.b | ⊢ 𝐵 = (Base‘𝐴) |
| smatcl.c | ⊢ 𝐶 = (Base‘((1...(𝑁 − 1)) Mat 𝑅)) |
| smatcl.s | ⊢ 𝑆 = (𝐾(subMat1‘𝑀)𝐿) |
| smatcl.n | ⊢ (𝜑 → 𝑁 ∈ ℕ) |
| smatcl.k | ⊢ (𝜑 → 𝐾 ∈ (1...𝑁)) |
| smatcl.l | ⊢ (𝜑 → 𝐿 ∈ (1...𝑁)) |
| smatcl.m | ⊢ (𝜑 → 𝑀 ∈ 𝐵) |
| Ref | Expression |
|---|---|
| smatcl | ⊢ (𝜑 → 𝑆 ∈ 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | smatcl.s | . . . 4 ⊢ 𝑆 = (𝐾(subMat1‘𝑀)𝐿) | |
| 2 | smatcl.n | . . . 4 ⊢ (𝜑 → 𝑁 ∈ ℕ) | |
| 3 | smatcl.k | . . . 4 ⊢ (𝜑 → 𝐾 ∈ (1...𝑁)) | |
| 4 | smatcl.l | . . . 4 ⊢ (𝜑 → 𝐿 ∈ (1...𝑁)) | |
| 5 | smatcl.m | . . . . 5 ⊢ (𝜑 → 𝑀 ∈ 𝐵) | |
| 6 | smatcl.a | . . . . . 6 ⊢ 𝐴 = ((1...𝑁) Mat 𝑅) | |
| 7 | eqid 2737 | . . . . . 6 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 8 | smatcl.b | . . . . . 6 ⊢ 𝐵 = (Base‘𝐴) | |
| 9 | 6, 7, 8 | matbas2i 22378 | . . . . 5 ⊢ (𝑀 ∈ 𝐵 → 𝑀 ∈ ((Base‘𝑅) ↑m ((1...𝑁) × (1...𝑁)))) |
| 10 | 5, 9 | syl 17 | . . . 4 ⊢ (𝜑 → 𝑀 ∈ ((Base‘𝑅) ↑m ((1...𝑁) × (1...𝑁)))) |
| 11 | 1, 2, 2, 3, 4, 10 | smatrcl 33973 | . . 3 ⊢ (𝜑 → 𝑆 ∈ ((Base‘𝑅) ↑m ((1...(𝑁 − 1)) × (1...(𝑁 − 1))))) |
| 12 | fzfi 13907 | . . . . 5 ⊢ (1...(𝑁 − 1)) ∈ Fin | |
| 13 | 6, 8 | matrcl 22368 | . . . . . . 7 ⊢ (𝑀 ∈ 𝐵 → ((1...𝑁) ∈ Fin ∧ 𝑅 ∈ V)) |
| 14 | 13 | simprd 495 | . . . . . 6 ⊢ (𝑀 ∈ 𝐵 → 𝑅 ∈ V) |
| 15 | 5, 14 | syl 17 | . . . . 5 ⊢ (𝜑 → 𝑅 ∈ V) |
| 16 | eqid 2737 | . . . . . 6 ⊢ ((1...(𝑁 − 1)) Mat 𝑅) = ((1...(𝑁 − 1)) Mat 𝑅) | |
| 17 | 16, 7 | matbas2 22377 | . . . . 5 ⊢ (((1...(𝑁 − 1)) ∈ Fin ∧ 𝑅 ∈ V) → ((Base‘𝑅) ↑m ((1...(𝑁 − 1)) × (1...(𝑁 − 1)))) = (Base‘((1...(𝑁 − 1)) Mat 𝑅))) |
| 18 | 12, 15, 17 | sylancr 588 | . . . 4 ⊢ (𝜑 → ((Base‘𝑅) ↑m ((1...(𝑁 − 1)) × (1...(𝑁 − 1)))) = (Base‘((1...(𝑁 − 1)) Mat 𝑅))) |
| 19 | 18 | eleq2d 2823 | . . 3 ⊢ (𝜑 → (𝑆 ∈ ((Base‘𝑅) ↑m ((1...(𝑁 − 1)) × (1...(𝑁 − 1)))) ↔ 𝑆 ∈ (Base‘((1...(𝑁 − 1)) Mat 𝑅)))) |
| 20 | 11, 19 | mpbid 232 | . 2 ⊢ (𝜑 → 𝑆 ∈ (Base‘((1...(𝑁 − 1)) Mat 𝑅))) |
| 21 | smatcl.c | . 2 ⊢ 𝐶 = (Base‘((1...(𝑁 − 1)) Mat 𝑅)) | |
| 22 | 20, 21 | eleqtrrdi 2848 | 1 ⊢ (𝜑 → 𝑆 ∈ 𝐶) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 Vcvv 3442 × cxp 5630 ‘cfv 6500 (class class class)co 7368 ↑m cmap 8775 Fincfn 8895 1c1 11039 − cmin 11376 ℕcn 12157 ...cfz 13435 Basecbs 17148 Mat cmat 22363 subMat1csmat 33970 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5226 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-tp 4587 df-op 4589 df-ot 4591 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-om 7819 df-1st 7943 df-2nd 7944 df-supp 8113 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-1o 8407 df-er 8645 df-map 8777 df-ixp 8848 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-fsupp 9277 df-sup 9357 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-nn 12158 df-2 12220 df-3 12221 df-4 12222 df-5 12223 df-6 12224 df-7 12225 df-8 12226 df-9 12227 df-n0 12414 df-z 12501 df-dec 12620 df-uz 12764 df-fz 13436 df-struct 17086 df-sets 17103 df-slot 17121 df-ndx 17133 df-base 17149 df-ress 17170 df-plusg 17202 df-mulr 17203 df-sca 17205 df-vsca 17206 df-ip 17207 df-tset 17208 df-ple 17209 df-ds 17211 df-hom 17213 df-cco 17214 df-0g 17373 df-prds 17379 df-pws 17381 df-sra 21137 df-rgmod 21138 df-dsmm 21699 df-frlm 21714 df-mat 22364 df-smat 33971 |
| This theorem is referenced by: submat1n 33982 submateq 33986 madjusmdetlem3 34006 mdetlap 34009 |
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