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An interpolation between two intertwinings [Une interpolation entre deux entrelacs]
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An interpolation between two intertwinings [Une interpolation entre deux entrelacs]
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= PA[FX[x,y],FY[x,y]]
FX[x,y] = A11.PX[x,y] + A12.PY[x,y] + A13.PZ[x,y]
FY[x,y] = A21.PX[x,y] + A22.PY[x,y] + A23.PZ[x,y]
(X and Y periodical)
(the interpolation between the 'X' fields defining a first and a second intertwinings)
(the interpolation between the 'Y' fields defining a first and a second intertwinings)
(the interpolation between the 'Z' fields defining a first and a second intertwinings)