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↓ ABCD schemes
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table of coefficients (about 18 digits) (.txt) AB scheme, real: Strang-Milne
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(I) Strang (s=2, p=2, symmetric)
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LEM: 0.6
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Associated scheme:
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(II) s=3, p=2, symmetric
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LEM: 0.15
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'Milne device' (via extrapolation): With κ=4/3, κ*((I)-(II)) is local error estimator for (I)
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| i | ai,associated | bi,associated |
| 1 | 1/4 | 1/2 |
| 2 | 1/2 | 1/2 |
| 3 | 1/4 | 0 |
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