Description: For any natural number N , the Dirichlet Kernel ( DN ) is a function. (Contributed by Glauco Siliprandi, 11-Dec-2019)
Ref | Expression | ||
---|---|---|---|
Hypothesis | dirkerf.1 | |
|
Assertion | dirkerf | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dirkerf.1 | |
|
2 | 1 | dirkerval2 | |
3 | 1 | dirkerre | |
4 | 2 3 | eqeltrrd | |
5 | 4 | fmpttd | |
6 | 1 | dirkerval | |
7 | 6 | feq1d | |
8 | 5 7 | mpbird | |