Description: The base set of the ring of univariate power series. (Contributed by Mario Carneiro, 8-Feb-2015)
Ref | Expression | ||
---|---|---|---|
Hypotheses | psr1val.1 | ||
psr1bas2.b | |||
psr1bas.k | |||
Assertion | psr1bas |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | psr1val.1 | ||
2 | psr1bas2.b | ||
3 | psr1bas.k | ||
4 | eqid | ||
5 | psr1baslem | ||
6 | 1 2 4 | psr1bas2 | |
7 | 1on | ||
8 | 7 | a1i | |
9 | 4 3 5 6 8 | psrbas | |
10 | 9 | mptru |