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Theorem int-mul11d 44770
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 11225 . . 3 (𝜑𝐴 ∈ ℂ)
32mulridd 11214 . 2 (𝜑 → (𝐴 · 1) = 𝐴)
4 int-mul11d.2 . 2 (𝜑𝐴 = 𝐵)
53, 4eqtrd 2800 1 (𝜑 → (𝐴 · 1) = 𝐵)
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1563  wcel 2145  (class class class)co 7400  cr 11087  1c1 11089   · cmul 11093
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1818  ax-4 1832  ax-5 1933  ax-6 1990  ax-7 2031  ax-8 2147  ax-9 2155  ax-ext 2737  ax-resscn 11145  ax-1cn 11146  ax-icn 11147  ax-addcl 11148  ax-mulcl 11150  ax-mulcom 11152  ax-mulass 11154  ax-distr 11155  ax-1rid 11158  ax-cnre 11161
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1566  df-fal 1576  df-ex 1803  df-sb 2094  df-clab 2744  df-cleq 2757  df-clel 2840  df-rex 3090  df-rab 3418  df-v 3459  df-dif 3910  df-un 3912  df-ss 3924  df-nul 4289  df-if 4484  df-sn 4586  df-pr 4588  df-op 4592  df-uni 4869  df-br 5106  df-iota 6481  df-fv 6533  df-ov 7403
This theorem is referenced by: (None)
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