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a = b = 2.5; L = 60; d = 20; c = 0.5;
A = (c/d)^2;
t = ((-a^3  b/4)^3 + (-b^3  a/4)^3 + 2 a b L^2 - 3 a^3 b m ^2 -
       3 a b^3 n^2)/2/L^4/A;
mm = Table[t, {m, -4, 4}, {n, -4, 4}];
Print[mm];
x = 2 m a/d;
y = 2 n b/d;
Ea = (HeavisideTheta[x + c/d] -
     HeavisideTheta[x - c/d]) (HeavisideTheta[y + c/d] -
     HeavisideTheta[y - c/d]);
Print[ListConvolve[Ea, t], {m, -4, 4}, {n, -4, 4}]
nn = Table[{x, y, t}, {m, -4, 4}, {n, -4, 4}];
Print[nn]
ListPointPlot3D[nn]
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  • 2013-11-06 17:11:28, 201.23 K

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