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Mirrors > Home > MPE Home > Th. List > Mathboxes > exple2lt6 | Structured version Visualization version GIF version |
Description: A nonnegative integer to the power of itself is less than 6 if it is less than or equal to 2. (Contributed by AV, 16-Mar-2019.) |
Ref | Expression |
---|---|
exple2lt6 | ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑁 ≤ 2) → (𝑁↑𝑁) < 6) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nn0le2is012 12464 | . 2 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑁 ≤ 2) → (𝑁 = 0 ∨ 𝑁 = 1 ∨ 𝑁 = 2)) | |
2 | id 22 | . . . . 5 ⊢ (𝑁 = 0 → 𝑁 = 0) | |
3 | 2, 2 | oveq12d 7335 | . . . 4 ⊢ (𝑁 = 0 → (𝑁↑𝑁) = (0↑0)) |
4 | 0exp0e1 13867 | . . . . 5 ⊢ (0↑0) = 1 | |
5 | 1lt6 12238 | . . . . 5 ⊢ 1 < 6 | |
6 | 4, 5 | eqbrtri 5108 | . . . 4 ⊢ (0↑0) < 6 |
7 | 3, 6 | eqbrtrdi 5126 | . . 3 ⊢ (𝑁 = 0 → (𝑁↑𝑁) < 6) |
8 | id 22 | . . . . 5 ⊢ (𝑁 = 1 → 𝑁 = 1) | |
9 | 8, 8 | oveq12d 7335 | . . . 4 ⊢ (𝑁 = 1 → (𝑁↑𝑁) = (1↑1)) |
10 | ax-1cn 11009 | . . . . . 6 ⊢ 1 ∈ ℂ | |
11 | exp1 13868 | . . . . . 6 ⊢ (1 ∈ ℂ → (1↑1) = 1) | |
12 | 10, 11 | ax-mp 5 | . . . . 5 ⊢ (1↑1) = 1 |
13 | 12, 5 | eqbrtri 5108 | . . . 4 ⊢ (1↑1) < 6 |
14 | 9, 13 | eqbrtrdi 5126 | . . 3 ⊢ (𝑁 = 1 → (𝑁↑𝑁) < 6) |
15 | id 22 | . . . . 5 ⊢ (𝑁 = 2 → 𝑁 = 2) | |
16 | 15, 15 | oveq12d 7335 | . . . 4 ⊢ (𝑁 = 2 → (𝑁↑𝑁) = (2↑2)) |
17 | sq2 13994 | . . . . 5 ⊢ (2↑2) = 4 | |
18 | 4lt6 12235 | . . . . 5 ⊢ 4 < 6 | |
19 | 17, 18 | eqbrtri 5108 | . . . 4 ⊢ (2↑2) < 6 |
20 | 16, 19 | eqbrtrdi 5126 | . . 3 ⊢ (𝑁 = 2 → (𝑁↑𝑁) < 6) |
21 | 7, 14, 20 | 3jaoi 1426 | . 2 ⊢ ((𝑁 = 0 ∨ 𝑁 = 1 ∨ 𝑁 = 2) → (𝑁↑𝑁) < 6) |
22 | 1, 21 | syl 17 | 1 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑁 ≤ 2) → (𝑁↑𝑁) < 6) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∨ w3o 1085 = wceq 1540 ∈ wcel 2105 class class class wbr 5087 (class class class)co 7317 ℂcc 10949 0cc0 10951 1c1 10952 < clt 11089 ≤ cle 11090 2c2 12108 4c4 12110 6c6 12112 ℕ0cn0 12313 ↑cexp 13862 |
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 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2708 ax-sep 5238 ax-nul 5245 ax-pow 5303 ax-pr 5367 ax-un 7630 ax-cnex 11007 ax-resscn 11008 ax-1cn 11009 ax-icn 11010 ax-addcl 11011 ax-addrcl 11012 ax-mulcl 11013 ax-mulrcl 11014 ax-mulcom 11015 ax-addass 11016 ax-mulass 11017 ax-distr 11018 ax-i2m1 11019 ax-1ne0 11020 ax-1rid 11021 ax-rnegex 11022 ax-rrecex 11023 ax-cnre 11024 ax-pre-lttri 11025 ax-pre-lttrn 11026 ax-pre-ltadd 11027 ax-pre-mulgt0 11028 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2815 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-reu 3351 df-rab 3405 df-v 3443 df-sbc 3727 df-csb 3843 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-pss 3916 df-nul 4268 df-if 4472 df-pw 4547 df-sn 4572 df-pr 4574 df-op 4578 df-uni 4851 df-iun 4939 df-br 5088 df-opab 5150 df-mpt 5171 df-tr 5205 df-id 5507 df-eprel 5513 df-po 5521 df-so 5522 df-fr 5563 df-we 5565 df-xp 5614 df-rel 5615 df-cnv 5616 df-co 5617 df-dm 5618 df-rn 5619 df-res 5620 df-ima 5621 df-pred 6225 df-ord 6292 df-on 6293 df-lim 6294 df-suc 6295 df-iota 6418 df-fun 6468 df-fn 6469 df-f 6470 df-f1 6471 df-fo 6472 df-f1o 6473 df-fv 6474 df-riota 7274 df-ov 7320 df-oprab 7321 df-mpo 7322 df-om 7760 df-2nd 7879 df-frecs 8146 df-wrecs 8177 df-recs 8251 df-rdg 8290 df-er 8548 df-en 8784 df-dom 8785 df-sdom 8786 df-pnf 11091 df-mnf 11092 df-xr 11093 df-ltxr 11094 df-le 11095 df-sub 11287 df-neg 11288 df-nn 12054 df-2 12116 df-3 12117 df-4 12118 df-5 12119 df-6 12120 df-n0 12314 df-z 12400 df-uz 12663 df-seq 13802 df-exp 13863 |
This theorem is referenced by: pgrple2abl 45966 |
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