Mathbox for metakunt |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > metakunt9 | Structured version Visualization version GIF version |
Description: C is the left inverse for A. (Contributed by metakunt, 24-May-2024.) |
Ref | Expression |
---|---|
metakunt9.1 | ⊢ (𝜑 → 𝑀 ∈ ℕ) |
metakunt9.2 | ⊢ (𝜑 → 𝐼 ∈ ℕ) |
metakunt9.3 | ⊢ (𝜑 → 𝐼 ≤ 𝑀) |
metakunt9.4 | ⊢ 𝐴 = (𝑥 ∈ (1...𝑀) ↦ if(𝑥 = 𝐼, 𝑀, if(𝑥 < 𝐼, 𝑥, (𝑥 − 1)))) |
metakunt9.5 | ⊢ 𝐶 = (𝑦 ∈ (1...𝑀) ↦ if(𝑦 = 𝑀, 𝐼, if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)))) |
metakunt9.6 | ⊢ (𝜑 → 𝑋 ∈ (1...𝑀)) |
Ref | Expression |
---|---|
metakunt9 | ⊢ (𝜑 → (𝐶‘(𝐴‘𝑋)) = 𝑋) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | metakunt9.1 | . . 3 ⊢ (𝜑 → 𝑀 ∈ ℕ) | |
2 | metakunt9.2 | . . 3 ⊢ (𝜑 → 𝐼 ∈ ℕ) | |
3 | metakunt9.3 | . . 3 ⊢ (𝜑 → 𝐼 ≤ 𝑀) | |
4 | metakunt9.4 | . . 3 ⊢ 𝐴 = (𝑥 ∈ (1...𝑀) ↦ if(𝑥 = 𝐼, 𝑀, if(𝑥 < 𝐼, 𝑥, (𝑥 − 1)))) | |
5 | metakunt9.5 | . . 3 ⊢ 𝐶 = (𝑦 ∈ (1...𝑀) ↦ if(𝑦 = 𝑀, 𝐼, if(𝑦 < 𝐼, 𝑦, (𝑦 + 1)))) | |
6 | metakunt9.6 | . . 3 ⊢ (𝜑 → 𝑋 ∈ (1...𝑀)) | |
7 | 1, 2, 3, 4, 5, 6 | metakunt8 40132 | . 2 ⊢ ((𝜑 ∧ 𝐼 < 𝑋) → (𝐶‘(𝐴‘𝑋)) = 𝑋) |
8 | elfznn 13285 | . . . . . . 7 ⊢ (𝑋 ∈ (1...𝑀) → 𝑋 ∈ ℕ) | |
9 | 6, 8 | syl 17 | . . . . . 6 ⊢ (𝜑 → 𝑋 ∈ ℕ) |
10 | 9 | nnred 11988 | . . . . 5 ⊢ (𝜑 → 𝑋 ∈ ℝ) |
11 | 2 | nnred 11988 | . . . . 5 ⊢ (𝜑 → 𝐼 ∈ ℝ) |
12 | 10, 11 | leloed 11118 | . . . 4 ⊢ (𝜑 → (𝑋 ≤ 𝐼 ↔ (𝑋 < 𝐼 ∨ 𝑋 = 𝐼))) |
13 | 1, 2, 3, 4, 5, 6 | metakunt6 40130 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑋 < 𝐼) → (𝐶‘(𝐴‘𝑋)) = 𝑋) |
14 | 1, 2, 3, 4, 5, 6 | metakunt5 40129 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑋 = 𝐼) → (𝐶‘(𝐴‘𝑋)) = 𝑋) |
15 | 13, 14 | jaodan 955 | . . . . 5 ⊢ ((𝜑 ∧ (𝑋 < 𝐼 ∨ 𝑋 = 𝐼)) → (𝐶‘(𝐴‘𝑋)) = 𝑋) |
16 | 15 | ex 413 | . . . 4 ⊢ (𝜑 → ((𝑋 < 𝐼 ∨ 𝑋 = 𝐼) → (𝐶‘(𝐴‘𝑋)) = 𝑋)) |
17 | 12, 16 | sylbid 239 | . . 3 ⊢ (𝜑 → (𝑋 ≤ 𝐼 → (𝐶‘(𝐴‘𝑋)) = 𝑋)) |
18 | 17 | imp 407 | . 2 ⊢ ((𝜑 ∧ 𝑋 ≤ 𝐼) → (𝐶‘(𝐴‘𝑋)) = 𝑋) |
19 | 7, 18, 11, 10 | ltlecasei 11083 | 1 ⊢ (𝜑 → (𝐶‘(𝐴‘𝑋)) = 𝑋) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∨ wo 844 = wceq 1539 ∈ wcel 2106 ifcif 4459 class class class wbr 5074 ↦ cmpt 5157 ‘cfv 6433 (class class class)co 7275 1c1 10872 + caddc 10874 < clt 11009 ≤ cle 11010 − cmin 11205 ℕcn 11973 ...cfz 13239 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-nn 11974 df-n0 12234 df-z 12320 df-uz 12583 df-fz 13240 |
This theorem is referenced by: metakunt14 40138 |
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