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| Mirrors > Home > MPE Home > Th. List > x2times | Structured version Visualization version GIF version | ||
| Description: Extended real version of 2times 12433. (Contributed by Mario Carneiro, 20-Aug-2015.) |
| Ref | Expression |
|---|---|
| x2times | ⊢ (𝐴 ∈ ℝ* → (2 ·e 𝐴) = (𝐴 +𝑒 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-2 12360 | . . . 4 ⊢ 2 = (1 + 1) | |
| 2 | 1re 11265 | . . . . 5 ⊢ 1 ∈ ℝ | |
| 3 | rexadd 13317 | . . . . 5 ⊢ ((1 ∈ ℝ ∧ 1 ∈ ℝ) → (1 +𝑒 1) = (1 + 1)) | |
| 4 | 2, 2, 3 | mp2an 705 | . . . 4 ⊢ (1 +𝑒 1) = (1 + 1) |
| 5 | 1, 4 | eqtr4i 2786 | . . 3 ⊢ 2 = (1 +𝑒 1) |
| 6 | 5 | oveq1i 7419 | . 2 ⊢ (2 ·e 𝐴) = ((1 +𝑒 1) ·e 𝐴) |
| 7 | 1xr 11325 | . . . . 5 ⊢ 1 ∈ ℝ* | |
| 8 | 0le1 11794 | . . . . 5 ⊢ 0 ≤ 1 | |
| 9 | 7, 8 | pm3.2i 476 | . . . 4 ⊢ (1 ∈ ℝ* ∧ 0 ≤ 1) |
| 10 | xadddi2r 13383 | . . . 4 ⊢ (((1 ∈ ℝ* ∧ 0 ≤ 1) ∧ (1 ∈ ℝ* ∧ 0 ≤ 1) ∧ 𝐴 ∈ ℝ*) → ((1 +𝑒 1) ·e 𝐴) = ((1 ·e 𝐴) +𝑒 (1 ·e 𝐴))) | |
| 11 | 9, 9, 10 | mp3an12 1480 | . . 3 ⊢ (𝐴 ∈ ℝ* → ((1 +𝑒 1) ·e 𝐴) = ((1 ·e 𝐴) +𝑒 (1 ·e 𝐴))) |
| 12 | xmullid 13365 | . . . 4 ⊢ (𝐴 ∈ ℝ* → (1 ·e 𝐴) = 𝐴) | |
| 13 | 12, 12 | oveq12d 7427 | . . 3 ⊢ (𝐴 ∈ ℝ* → ((1 ·e 𝐴) +𝑒 (1 ·e 𝐴)) = (𝐴 +𝑒 𝐴)) |
| 14 | 11, 13 | eqtrd 2795 | . 2 ⊢ (𝐴 ∈ ℝ* → ((1 +𝑒 1) ·e 𝐴) = (𝐴 +𝑒 𝐴)) |
| 15 | 6, 14 | eqtrid 2807 | 1 ⊢ (𝐴 ∈ ℝ* → (2 ·e 𝐴) = (𝐴 +𝑒 𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 class class class wbr 5103 (class class class)co 7409 ℝcr 11156 0cc0 11157 1c1 11158 + caddc 11160 ℝ*cxr 11299 ≤ cle 11301 2c2 12352 +𝑒 cxad 13194 ·e cxmu 13195 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7735 ax-cnex 11213 ax-resscn 11214 ax-1cn 11215 ax-icn 11216 ax-addcl 11217 ax-addrcl 11218 ax-mulcl 11219 ax-mulrcl 11220 ax-mulcom 11221 ax-addass 11222 ax-mulass 11223 ax-distr 11224 ax-i2m1 11225 ax-1ne0 11226 ax-1rid 11227 ax-rnegex 11228 ax-rrecex 11229 ax-cnre 11230 ax-pre-lttri 11231 ax-pre-lttrn 11232 ax-pre-ltadd 11233 ax-pre-mulgt0 11234 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5543 df-po 5556 df-so 5557 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-iota 6484 df-fun 6530 df-fn 6531 df-f 6532 df-f1 6533 df-fo 6534 df-f1o 6535 df-fv 6536 df-riota 7366 df-ov 7412 df-oprab 7413 df-mpo 7414 df-1st 7985 df-2nd 7986 df-er 8696 df-en 8953 df-dom 8954 df-sdom 8955 df-pnf 11302 df-mnf 11303 df-xr 11304 df-ltxr 11305 df-le 11306 df-sub 11500 df-neg 11501 df-2 12360 df-xneg 13196 df-xadd 13197 df-xmul 13198 |
| This theorem is used by: psmetge0 24578 xmetge0 24610 metnrmlem3 25128 |
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