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Get Parts of an Image   (Mathematica How To)
MATHEMATICA HOW TO Tutorials » Image Processing Convolutions and Correlations See Also » ImageCrop ImageTake More About » Raster Image Formats Signal Processing "How to" ...
Applying Functions to Parts of ...   (Mathematica Tutorial)
If you have a list of elements, it is often important to be able to apply a function separately to each of the elements. You can do this in Mathematica using Map. This ...
UpperTriangularize   (Built-in Mathematica Symbol)
UpperTriangularize[m] gives a matrix in which all but the upper triangular elements of m are replaced with zeros. UpperTriangularize[m, k] replaces with zeros only the ...
Permute   (Built-in Mathematica Symbol)
Permute[expr, perm] permutes the positions of the elements of expr according to the permutation perm.Permute[expr, gr] returns the list of permuted forms of expr under the ...
All   (Built-in Mathematica Symbol)
All is a setting used for certain options. In Part and related functions, All specifies all parts at a particular level.
SymmetricReduction   (Built-in Mathematica Symbol)
SymmetricReduction[f, {x_1, ..., x_n}] gives a pair of polynomials {p, q} in x_1, ..., x_n such that f == p + q, where p is the symmetric part and q is the ...
Last   (Built-in Mathematica Symbol)
Last[expr] gives the last element in expr.
Level   (Built-in Mathematica Symbol)
Level[expr, levelspec] gives a list of all subexpressions of expr on levels specified by levelspec. Level[expr, levelspec, f] applies f to the sequence of subexpressions.
Re   (Built-in Mathematica Symbol)
Re[z] gives the real part of the complex number z.
LowerTriangularize   (Built-in Mathematica Symbol)
LowerTriangularize[m] gives a matrix in which all but the lower triangular elements of m are replaced with zeros. LowerTriangularize[m, k] replaces with zeros only the ...
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