|
|
|
|
|
|
|
table of coefficients (about 18 digits) (.txt) AB scheme, complex: A 4-4 c
s=4, p=4; 3-fold symmetric Strang composition recombined (Auzinger 2015)
|
best symmetric 4-stage 4th order scheme
|
see also Castella, Chartier, Descombes, Vilmart (2009)
|
composition weights:
|
ω1 = 1/(2 - 21/3e2iπ/3) = 0.324396404020171183 + 0.134586272490806697 i
|
ω0 = 1 - 2ω1 = 0.351207191959657634 - 0.269172544981613394 i
|
LEM: 0.4
|
i | ai | bi |
1 | ω1/2 | ω1 |
2 | (ω1+ω0)/2 | ω0 |
3 | (ω1+ω0)/2 | ω1 |
4 | ω1/2 | 0 |
|