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Axiom ax-mulf 11226
Description: Multiplication is an operation on the complex numbers. This deprecated axiom is provided for historical compatibility but is not a bona fide axiom for complex numbers (independent of set theory) since it cannot be interpreted as a first-order or second-order statement (see https://us.metamath.org/downloads/schmidt-cnaxioms.pdf). It may be deleted in the future and should be avoided for new theorems. Instead, the less specific ax-mulcl 11208 should be used. Note that uses of ax-mulf 11226 can be eliminated by using the defined operation (π‘₯ ∈ β„‚, 𝑦 ∈ β„‚ ↦ (π‘₯ Β· 𝑦)) in place of Β·, from which this axiom (with the defined operation in place of Β·) follows as a theorem.

This axiom is justified by Theorem axmulf 11177. (New usage is discouraged.) (Contributed by NM, 19-Oct-2004.)

Assertion
Ref Expression
ax-mulf Β· :(β„‚ Γ— β„‚)βŸΆβ„‚

Detailed syntax breakdown of Axiom ax-mulf
StepHypRef Expression
1 cc 11144 . . 3 class β„‚
21, 1cxp 5680 . 2 class (β„‚ Γ— β„‚)
3 cmul 11151 . 2 class Β·
42, 1, 3wf 6549 1 wff Β· :(β„‚ Γ— β„‚)βŸΆβ„‚
Colors of variables: wff setvar class
This axiom is referenced by:  mulnzcnf  11898  mulex  13013  rlimmulOLD  15631  cnfldmul  21294  dfcnfldOLD  21302  mulcn  24803  iimulcnOLD  24882  dvdsmulf1o  27148  fsumdvdsmulOLD  27149  cncvcOLD  30413  xrge0pluscn  33574
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