Description: Obsolete proof of tngmulr as of 31-Oct-2024. The ring multiplication of a structure augmented with a norm. (Contributed by Mario Carneiro, 2-Oct-2015) (New usage is discouraged.) (Proof modification is discouraged.)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | tngbas.t | |- T = ( G toNrmGrp N ) |
|
| tngmulr.2 | |- .x. = ( .r ` G ) |
||
| Assertion | tngmulrOLD | |- ( N e. V -> .x. = ( .r ` T ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tngbas.t | |- T = ( G toNrmGrp N ) |
|
| 2 | tngmulr.2 | |- .x. = ( .r ` G ) |
|
| 3 | df-mulr | |- .r = Slot 3 |
|
| 4 | 3nn | |- 3 e. NN |
|
| 5 | 3lt9 | |- 3 < 9 |
|
| 6 | 1 3 4 5 | tnglemOLD | |- ( N e. V -> ( .r ` G ) = ( .r ` T ) ) |
| 7 | 2 6 | syl5eq | |- ( N e. V -> .x. = ( .r ` T ) ) |