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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 11793 | . 2 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑁 ≤ 2) → (𝑁 = 0 ∨ 𝑁 = 1 ∨ 𝑁 = 2)) | |
2 | id 22 | . . . . 5 ⊢ (𝑁 = 0 → 𝑁 = 0) | |
3 | 2, 2 | oveq12d 6940 | . . . 4 ⊢ (𝑁 = 0 → (𝑁↑𝑁) = (0↑0)) |
4 | 0exp0e1 13183 | . . . . 5 ⊢ (0↑0) = 1 | |
5 | 1lt6 11567 | . . . . 5 ⊢ 1 < 6 | |
6 | 4, 5 | eqbrtri 4907 | . . . 4 ⊢ (0↑0) < 6 |
7 | 3, 6 | syl6eqbr 4925 | . . 3 ⊢ (𝑁 = 0 → (𝑁↑𝑁) < 6) |
8 | id 22 | . . . . 5 ⊢ (𝑁 = 1 → 𝑁 = 1) | |
9 | 8, 8 | oveq12d 6940 | . . . 4 ⊢ (𝑁 = 1 → (𝑁↑𝑁) = (1↑1)) |
10 | ax-1cn 10330 | . . . . . 6 ⊢ 1 ∈ ℂ | |
11 | exp1 13184 | . . . . . 6 ⊢ (1 ∈ ℂ → (1↑1) = 1) | |
12 | 10, 11 | ax-mp 5 | . . . . 5 ⊢ (1↑1) = 1 |
13 | 12, 5 | eqbrtri 4907 | . . . 4 ⊢ (1↑1) < 6 |
14 | 9, 13 | syl6eqbr 4925 | . . 3 ⊢ (𝑁 = 1 → (𝑁↑𝑁) < 6) |
15 | id 22 | . . . . 5 ⊢ (𝑁 = 2 → 𝑁 = 2) | |
16 | 15, 15 | oveq12d 6940 | . . . 4 ⊢ (𝑁 = 2 → (𝑁↑𝑁) = (2↑2)) |
17 | sq2 13279 | . . . . 5 ⊢ (2↑2) = 4 | |
18 | 4lt6 11564 | . . . . 5 ⊢ 4 < 6 | |
19 | 17, 18 | eqbrtri 4907 | . . . 4 ⊢ (2↑2) < 6 |
20 | 16, 19 | syl6eqbr 4925 | . . 3 ⊢ (𝑁 = 2 → (𝑁↑𝑁) < 6) |
21 | 7, 14, 20 | 3jaoi 1501 | . 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 386 ∨ w3o 1070 = wceq 1601 ∈ wcel 2107 class class class wbr 4886 (class class class)co 6922 ℂcc 10270 0cc0 10272 1c1 10273 < clt 10411 ≤ cle 10412 2c2 11430 4c4 11432 6c6 11434 ℕ0cn0 11642 ↑cexp 13178 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1839 ax-4 1853 ax-5 1953 ax-6 2021 ax-7 2055 ax-8 2109 ax-9 2116 ax-10 2135 ax-11 2150 ax-12 2163 ax-13 2334 ax-ext 2754 ax-sep 5017 ax-nul 5025 ax-pow 5077 ax-pr 5138 ax-un 7226 ax-cnex 10328 ax-resscn 10329 ax-1cn 10330 ax-icn 10331 ax-addcl 10332 ax-addrcl 10333 ax-mulcl 10334 ax-mulrcl 10335 ax-mulcom 10336 ax-addass 10337 ax-mulass 10338 ax-distr 10339 ax-i2m1 10340 ax-1ne0 10341 ax-1rid 10342 ax-rnegex 10343 ax-rrecex 10344 ax-cnre 10345 ax-pre-lttri 10346 ax-pre-lttrn 10347 ax-pre-ltadd 10348 ax-pre-mulgt0 10349 |
This theorem depends on definitions: df-bi 199 df-an 387 df-or 837 df-3or 1072 df-3an 1073 df-tru 1605 df-ex 1824 df-nf 1828 df-sb 2012 df-mo 2551 df-eu 2587 df-clab 2764 df-cleq 2770 df-clel 2774 df-nfc 2921 df-ne 2970 df-nel 3076 df-ral 3095 df-rex 3096 df-reu 3097 df-rab 3099 df-v 3400 df-sbc 3653 df-csb 3752 df-dif 3795 df-un 3797 df-in 3799 df-ss 3806 df-pss 3808 df-nul 4142 df-if 4308 df-pw 4381 df-sn 4399 df-pr 4401 df-tp 4403 df-op 4405 df-uni 4672 df-iun 4755 df-br 4887 df-opab 4949 df-mpt 4966 df-tr 4988 df-id 5261 df-eprel 5266 df-po 5274 df-so 5275 df-fr 5314 df-we 5316 df-xp 5361 df-rel 5362 df-cnv 5363 df-co 5364 df-dm 5365 df-rn 5366 df-res 5367 df-ima 5368 df-pred 5933 df-ord 5979 df-on 5980 df-lim 5981 df-suc 5982 df-iota 6099 df-fun 6137 df-fn 6138 df-f 6139 df-f1 6140 df-fo 6141 df-f1o 6142 df-fv 6143 df-riota 6883 df-ov 6925 df-oprab 6926 df-mpt2 6927 df-om 7344 df-2nd 7446 df-wrecs 7689 df-recs 7751 df-rdg 7789 df-er 8026 df-en 8242 df-dom 8243 df-sdom 8244 df-pnf 10413 df-mnf 10414 df-xr 10415 df-ltxr 10416 df-le 10417 df-sub 10608 df-neg 10609 df-nn 11375 df-2 11438 df-3 11439 df-4 11440 df-5 11441 df-6 11442 df-n0 11643 df-z 11729 df-uz 11993 df-seq 13120 df-exp 13179 |
This theorem is referenced by: pgrple2abl 43165 |
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