ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  1p1times GIF version

Theorem 1p1times 8453
Description: Two times a number. (Contributed by NM, 18-May-1999.) (Revised by Mario Carneiro, 27-May-2016.)
Assertion
Ref Expression
1p1times (𝐴 ∈ ℂ → ((1 + 1) · 𝐴) = (𝐴 + 𝐴))

Proof of Theorem 1p1times
StepHypRef Expression
1 ax-1cn 8265 . . . 4 1 ∈ ℂ
21a1i 9 . . 3 (𝐴 ∈ ℂ → 1 ∈ ℂ)
3 id 19 . . 3 (𝐴 ∈ ℂ → 𝐴 ∈ ℂ)
42, 2, 3adddird 8344 . 2 (𝐴 ∈ ℂ → ((1 + 1) · 𝐴) = ((1 · 𝐴) + (1 · 𝐴)))
5 mullid 8317 . . 3 (𝐴 ∈ ℂ → (1 · 𝐴) = 𝐴)
65, 5oveq12d 6096 . 2 (𝐴 ∈ ℂ → ((1 · 𝐴) + (1 · 𝐴)) = (𝐴 + 𝐴))
74, 6eqtrd 2271 1 (𝐴 ∈ ℂ → ((1 + 1) · 𝐴) = (𝐴 + 𝐴))
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1402  wcel 2209  (class class class)co 6078  cc 8170  1c1 8173   + caddc 8175   · cmul 8177
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220  ax-resscn 8264  ax-1cn 8265  ax-icn 8267  ax-addcl 8268  ax-mulcl 8270  ax-mulcom 8273  ax-mulass 8275  ax-distr 8276  ax-1rid 8279  ax-cnre 8283
This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-v 2823  df-un 3224  df-in 3226  df-ss 3233  df-sn 3714  df-pr 3715  df-op 3717  df-uni 3934  df-br 4129  df-iota 5335  df-fv 5383  df-ov 6081
This theorem is referenced by:  eqneg  9055  2times  9414
  Copyright terms: Public domain W3C validator