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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 12241 | . 2 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑁 ≤ 2) → (𝑁 = 0 ∨ 𝑁 = 1 ∨ 𝑁 = 2)) | |
2 | id 22 | . . . . 5 ⊢ (𝑁 = 0 → 𝑁 = 0) | |
3 | 2, 2 | oveq12d 7231 | . . . 4 ⊢ (𝑁 = 0 → (𝑁↑𝑁) = (0↑0)) |
4 | 0exp0e1 13640 | . . . . 5 ⊢ (0↑0) = 1 | |
5 | 1lt6 12015 | . . . . 5 ⊢ 1 < 6 | |
6 | 4, 5 | eqbrtri 5074 | . . . 4 ⊢ (0↑0) < 6 |
7 | 3, 6 | eqbrtrdi 5092 | . . 3 ⊢ (𝑁 = 0 → (𝑁↑𝑁) < 6) |
8 | id 22 | . . . . 5 ⊢ (𝑁 = 1 → 𝑁 = 1) | |
9 | 8, 8 | oveq12d 7231 | . . . 4 ⊢ (𝑁 = 1 → (𝑁↑𝑁) = (1↑1)) |
10 | ax-1cn 10787 | . . . . . 6 ⊢ 1 ∈ ℂ | |
11 | exp1 13641 | . . . . . 6 ⊢ (1 ∈ ℂ → (1↑1) = 1) | |
12 | 10, 11 | ax-mp 5 | . . . . 5 ⊢ (1↑1) = 1 |
13 | 12, 5 | eqbrtri 5074 | . . . 4 ⊢ (1↑1) < 6 |
14 | 9, 13 | eqbrtrdi 5092 | . . 3 ⊢ (𝑁 = 1 → (𝑁↑𝑁) < 6) |
15 | id 22 | . . . . 5 ⊢ (𝑁 = 2 → 𝑁 = 2) | |
16 | 15, 15 | oveq12d 7231 | . . . 4 ⊢ (𝑁 = 2 → (𝑁↑𝑁) = (2↑2)) |
17 | sq2 13766 | . . . . 5 ⊢ (2↑2) = 4 | |
18 | 4lt6 12012 | . . . . 5 ⊢ 4 < 6 | |
19 | 17, 18 | eqbrtri 5074 | . . . 4 ⊢ (2↑2) < 6 |
20 | 16, 19 | eqbrtrdi 5092 | . . 3 ⊢ (𝑁 = 2 → (𝑁↑𝑁) < 6) |
21 | 7, 14, 20 | 3jaoi 1429 | . 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 399 ∨ w3o 1088 = wceq 1543 ∈ wcel 2110 class class class wbr 5053 (class class class)co 7213 ℂcc 10727 0cc0 10729 1c1 10730 < clt 10867 ≤ cle 10868 2c2 11885 4c4 11887 6c6 11889 ℕ0cn0 12090 ↑cexp 13635 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2708 ax-sep 5192 ax-nul 5199 ax-pow 5258 ax-pr 5322 ax-un 7523 ax-cnex 10785 ax-resscn 10786 ax-1cn 10787 ax-icn 10788 ax-addcl 10789 ax-addrcl 10790 ax-mulcl 10791 ax-mulrcl 10792 ax-mulcom 10793 ax-addass 10794 ax-mulass 10795 ax-distr 10796 ax-i2m1 10797 ax-1ne0 10798 ax-1rid 10799 ax-rnegex 10800 ax-rrecex 10801 ax-cnre 10802 ax-pre-lttri 10803 ax-pre-lttrn 10804 ax-pre-ltadd 10805 ax-pre-mulgt0 10806 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2071 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3066 df-rex 3067 df-reu 3068 df-rab 3070 df-v 3410 df-sbc 3695 df-csb 3812 df-dif 3869 df-un 3871 df-in 3873 df-ss 3883 df-pss 3885 df-nul 4238 df-if 4440 df-pw 4515 df-sn 4542 df-pr 4544 df-tp 4546 df-op 4548 df-uni 4820 df-iun 4906 df-br 5054 df-opab 5116 df-mpt 5136 df-tr 5162 df-id 5455 df-eprel 5460 df-po 5468 df-so 5469 df-fr 5509 df-we 5511 df-xp 5557 df-rel 5558 df-cnv 5559 df-co 5560 df-dm 5561 df-rn 5562 df-res 5563 df-ima 5564 df-pred 6160 df-ord 6216 df-on 6217 df-lim 6218 df-suc 6219 df-iota 6338 df-fun 6382 df-fn 6383 df-f 6384 df-f1 6385 df-fo 6386 df-f1o 6387 df-fv 6388 df-riota 7170 df-ov 7216 df-oprab 7217 df-mpo 7218 df-om 7645 df-2nd 7762 df-wrecs 8047 df-recs 8108 df-rdg 8146 df-er 8391 df-en 8627 df-dom 8628 df-sdom 8629 df-pnf 10869 df-mnf 10870 df-xr 10871 df-ltxr 10872 df-le 10873 df-sub 11064 df-neg 11065 df-nn 11831 df-2 11893 df-3 11894 df-4 11895 df-5 11896 df-6 11897 df-n0 12091 df-z 12177 df-uz 12439 df-seq 13575 df-exp 13636 |
This theorem is referenced by: pgrple2abl 45374 |
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