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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 12637 | . 2 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑁 ≤ 2) → (𝑁 = 0 ∨ 𝑁 = 1 ∨ 𝑁 = 2)) | |
| 2 | id 22 | . . . . 5 ⊢ (𝑁 = 0 → 𝑁 = 0) | |
| 3 | 2, 2 | oveq12d 7414 | . . . 4 ⊢ (𝑁 = 0 → (𝑁↑𝑁) = (0↑0)) |
| 4 | 0exp0e1 14079 | . . . . 5 ⊢ (0↑0) = 1 | |
| 5 | 1lt6 12405 | . . . . 5 ⊢ 1 < 6 | |
| 6 | 4, 5 | eqbrtri 5121 | . . . 4 ⊢ (0↑0) < 6 |
| 7 | 3, 6 | eqbrtrdi 5139 | . . 3 ⊢ (𝑁 = 0 → (𝑁↑𝑁) < 6) |
| 8 | id 22 | . . . . 5 ⊢ (𝑁 = 1 → 𝑁 = 1) | |
| 9 | 8, 8 | oveq12d 7414 | . . . 4 ⊢ (𝑁 = 1 → (𝑁↑𝑁) = (1↑1)) |
| 10 | ax-1cn 11131 | . . . . . 6 ⊢ 1 ∈ ℂ | |
| 11 | exp1 14080 | . . . . . 6 ⊢ (1 ∈ ℂ → (1↑1) = 1) | |
| 12 | 10, 11 | ax-mp 5 | . . . . 5 ⊢ (1↑1) = 1 |
| 13 | 12, 5 | eqbrtri 5121 | . . . 4 ⊢ (1↑1) < 6 |
| 14 | 9, 13 | eqbrtrdi 5139 | . . 3 ⊢ (𝑁 = 1 → (𝑁↑𝑁) < 6) |
| 15 | id 22 | . . . . 5 ⊢ (𝑁 = 2 → 𝑁 = 2) | |
| 16 | 15, 15 | oveq12d 7414 | . . . 4 ⊢ (𝑁 = 2 → (𝑁↑𝑁) = (2↑2)) |
| 17 | sq2 14210 | . . . . 5 ⊢ (2↑2) = 4 | |
| 18 | 4lt6 12402 | . . . . 5 ⊢ 4 < 6 | |
| 19 | 17, 18 | eqbrtri 5121 | . . . 4 ⊢ (2↑2) < 6 |
| 20 | 16, 19 | eqbrtrdi 5139 | . . 3 ⊢ (𝑁 = 2 → (𝑁↑𝑁) < 6) |
| 21 | 7, 14, 20 | 3jaoi 1447 | . 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 1097 = wceq 1560 ∈ wcel 2142 class class class wbr 5100 (class class class)co 7396 ℂcc 11071 0cc0 11073 1c1 11074 < clt 11216 ≤ cle 11217 2c2 12272 4c4 12274 6c6 12276 ℕ0cn0 12481 ↑cexp 14074 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-cnex 11129 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-addrcl 11134 ax-mulcl 11135 ax-mulrcl 11136 ax-mulcom 11137 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-i2m1 11141 ax-1ne0 11142 ax-1rid 11143 ax-rnegex 11144 ax-rrecex 11145 ax-cnre 11146 ax-pre-lttri 11147 ax-pre-lttrn 11148 ax-pre-ltadd 11149 ax-pre-mulgt0 11150 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8381 df-er 8678 df-en 8928 df-dom 8929 df-sdom 8930 df-pnf 11218 df-mnf 11219 df-xr 11220 df-ltxr 11221 df-le 11222 df-sub 11416 df-neg 11417 df-nn 12211 df-2 12280 df-3 12281 df-4 12282 df-5 12283 df-6 12284 df-n0 12482 df-z 12569 df-uz 12840 df-seq 14015 df-exp 14075 |
| This theorem is referenced by: pgrple2abl 48984 |
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