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| Mirrors > Home > ILE Home > Th. List > mulcomli | Unicode version | ||
| Description: Commutative law for multiplication. (Contributed by NM, 23-Nov-1994.) |
| Ref | Expression |
|---|---|
| axi.1 |
|
| axi.2 |
|
| mulcomli.3 |
|
| Ref | Expression |
|---|---|
| mulcomli |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | axi.2 |
. . 3
| |
| 2 | axi.1 |
. . 3
| |
| 3 | 1, 2 | mulcomi 8338 |
. 2
|
| 4 | mulcomli.3 |
. 2
| |
| 5 | 3, 4 | eqtri 2259 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-gen 1502 ax-4 1563 ax-17 1579 ax-ext 2220 ax-mulcom 8286 |
| This proof depends on definitions: df-bi 117 df-cleq 2231 |
| This theorem is used by: 2t3e6 9471 2t4e8 9474 nummul2c 9841 halfthird 9934 5recm6rec 9935 sq4e2t8 11094 cos2bnd 12551 dec5nprm 13221 karatsuba 13238 2exp6 13241 2exp8 13243 2exp11 13244 2exp16 13245 13prm 13258 17prm 13259 19prm 13260 23prm 13261 43prm 13264 83prm 13265 139prm 13266 163prm 13267 317prm 13268 631prm 13269 1259lem1 13270 1259lem2 13271 1259lem3 13272 1259lem4 13273 1259lem5 13274 1259prm 13275 log2ublem3 16240 log2ublog2 16241 bclbnd 16324 bpos1lem 16326 bposlem4 16331 bposlem5 16332 bposlem8 16335 2lgslem3a 16434 2lgsoddprmlem3c 16450 2lgsoddprmlem3d 16451 ex-exp 16963 ex-fac 16964 |
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