Description: Value of an index-aware recursive definition at 0. (Contributed by Stefan O'Rear, 1-Nov-2014) (Revised by AV, 17-Sep-2021)
Ref | Expression | ||
---|---|---|---|
Hypothesis | seqom.a | |
|
Assertion | seqom0g | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | seqom.a | |
|
2 | df-seqom | |
|
3 | 1 2 | eqtri | |
4 | 3 | fveq1i | |
5 | seqomlem0 | |
|
6 | 5 | seqomlem3 | |
7 | 4 6 | eqtri | |
8 | fvi | |
|
9 | 7 8 | eqtrid | |