Metamath Proof Explorer
Description: *r is unaffected by restriction. (Contributed by Mario Carneiro, 9-Oct-2015)
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|
Ref |
Expression |
|
Hypotheses |
ressmulr.1 |
|
|
|
ressstarv.2 |
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|
Assertion |
ressstarv |
|
Proof
Step |
Hyp |
Ref |
Expression |
1 |
|
ressmulr.1 |
|
2 |
|
ressstarv.2 |
|
3 |
|
df-starv |
|
4 |
|
4nn |
|
5 |
|
1lt4 |
|
6 |
1 2 3 4 5
|
resslem |
|