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| Mirrors > Home > MPE Home > Th. List > lemul2ad | Structured version Visualization version Unicode version | ||
| Description: Multiplication of both sides of 'less than or equal to' by a nonnegative number. (Contributed by Mario Carneiro, 28-May-2016.) |
| Ref | Expression |
|---|---|
| ltp1d.1 |
|
| divgt0d.2 |
|
| lemul1ad.3 |
|
| lemul1ad.4 |
|
| lemul1ad.5 |
|
| Ref | Expression |
|---|---|
| lemul2ad |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltp1d.1 |
. 2
| |
| 2 | divgt0d.2 |
. 2
| |
| 3 | lemul1ad.3 |
. . 3
| |
| 4 | lemul1ad.4 |
. . 3
| |
| 5 | 3, 4 | jca 554 |
. 2
|
| 6 | lemul1ad.5 |
. 2
| |
| 7 | lemul2a 10878 |
. 2
| |
| 8 | 1, 2, 5, 6, 7 | syl31anc 1329 |
1
|
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