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Theorem int-mul11d 44722
Description: First MultiplicationOne generator rule. (Contributed by Stanislas Polu, 7-Apr-2020.)
Hypotheses
Ref Expression
int-mul11d.1 (𝜑𝐴 ∈ ℝ)
int-mul11d.2 (𝜑𝐴 = 𝐵)
Assertion
Ref Expression
int-mul11d (𝜑 → (𝐴 · 1) = 𝐵)

Proof of Theorem int-mul11d
StepHypRef Expression
1 int-mul11d.1 . . . 4 (𝜑𝐴 ∈ ℝ)
21recnd 11207 . . 3 (𝜑𝐴 ∈ ℂ)
32mulridd 11196 . 2 (𝜑 → (𝐴 · 1) = 𝐴)
4 int-mul11d.2 . 2 (𝜑𝐴 = 𝐵)
53, 4eqtrd 2796 1 (𝜑 → (𝐴 · 1) = 𝐵)
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1559  wcel 2141  (class class class)co 7392  cr 11069  1c1 11071   · cmul 11075
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1814  ax-4 1828  ax-5 1929  ax-6 1986  ax-7 2027  ax-8 2143  ax-9 2151  ax-ext 2733  ax-resscn 11127  ax-1cn 11128  ax-icn 11129  ax-addcl 11130  ax-mulcl 11132  ax-mulcom 11134  ax-mulass 11136  ax-distr 11137  ax-1rid 11140  ax-cnre 11143
This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1099  df-tru 1562  df-fal 1572  df-ex 1799  df-sb 2090  df-clab 2740  df-cleq 2753  df-clel 2836  df-rex 3086  df-rab 3414  df-v 3455  df-dif 3907  df-un 3909  df-ss 3921  df-nul 4286  df-if 4480  df-sn 4582  df-pr 4584  df-op 4588  df-uni 4865  df-br 5100  df-iota 6473  df-fv 6525  df-ov 7395
This theorem is referenced by: (None)
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