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| Mirrors > Home > ILE Home > Th. List > ax-mulcom | Unicode version | ||
| Description: Multiplication of complex numbers is commutative. Axiom for real and complex numbers, justified by Theorem axmulcom 8054. Proofs should normally use mulcom 8124 instead. (New usage is discouraged.) (Contributed by NM, 22-Nov-1994.) |
| Ref | Expression |
|---|---|
| ax-mulcom |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cA |
. . . 4
| |
| 2 | cc 7993 |
. . . 4
| |
| 3 | 1, 2 | wcel 2200 |
. . 3
|
| 4 | cB |
. . . 4
| |
| 5 | 4, 2 | wcel 2200 |
. . 3
|
| 6 | 3, 5 | wa 104 |
. 2
|
| 7 | cmul 8000 |
. . . 4
| |
| 8 | 1, 4, 7 | co 6000 |
. . 3
|
| 9 | 4, 1, 7 | co 6000 |
. . 3
|
| 10 | 8, 9 | wceq 1395 |
. 2
|
| 11 | 6, 10 | wi 4 |
1
|
| Colors of variables: wff set class |
| This axiom is referenced by: mulcom 8124 |
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