Wolfram 语言™

执行梅林卷积

MellinConvolve 对两个函数做梅林 (Mellin) 卷积.

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`MellinConvolve[UnitBox[x - 3/2], 2 UnitBox[x - 2], x, y]`
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In[2]:=
```MellinConvolve[UnitBox[x - 3/2], 2 UnitBox[x - 2], x, y]; Plot[{UnitBox[y - 3/2], 2 UnitBox[y - 2], %} // Evaluate, {y, 0, 6}, Filling -> Axis, Exclusions -> None, PlotRange -> All]```
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In[3]:=
`MellinConvolve[BesselJ[0, x], BesselJ[1, x], x, y]`
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In[4]:=
```MellinConvolve[BesselJ[0, x], BesselJ[1, x], x, y]; Plot[{BesselJ[0, y], BesselJ[1, y], %} // Evaluate, {y, 0, 10}, Filling -> Axis, PlotLegends -> "Expressions"]```
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In[5]:=
```MellinConvolve[3 UnitBox[s - 3/2, t - 7/4], 2 UnitBox[s - 1, t - 1], {s, t}, {m, n}]```
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In[6]:=
```MellinConvolve[3 UnitBox[s - 3/2, t - 7/4], 2 UnitBox[s - 1, t - 1], {s, t}, {m, n}]; Plot3D[{3 UnitBox[m - 3/2, n - 7/4], 2 UnitBox[m - 1, n - 1], %} // Evaluate, {m, 0, 3}, {n, 0, 3}, PlotRange -> All, Filling -> Axis, PlotPoints -> 50, Exclusions -> None, PlotStyle -> Opacity[0.4], Ticks -> None, Mesh -> None]```
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