specify forward vs reverse

This commit is contained in:
Jan Petykiewicz 2019-11-28 01:44:42 -08:00
parent 1a3531946a
commit de98d70850

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@ -25,10 +25,13 @@ The derivatives are shifted by a half-cell relative to the original function:
_________________________
| | | | |
| f0 | f1 | f2 | f3 |
| f0 | f1 | f2 | f3 | function
|_____|_____|_____|_____|
| | | |
| Df0 | Df1 | Df2 | Df3
| Df0 | Df1 | Df2 | Df3 forward derivative (periodic boundary)
___|_____|_____|_____|____
| | | |
| Df1 | Df2 | Df3 | Df0 reverse derivative (periodic boundary)
___|_____|_____|_____|____
Periodic boundaries are used unless otherwise noted.