Pick (Built-in Mathematica Symbol)

Pick[list, sel] picks out those elements of list for which the corresponding element of sel is True. Pick[list, sel, patt] picks out those elements of list for which the ...

Function Names as Expressions (Mathematica Tutorial)

In an expression like f[x], the 'function name' f is itself an expression, and you can treat it as you would any other expression. You can replace names of functions using ...

Typing Square Roots (Mathematica Tutorial)

To get a square root sign, press the Control key and the 2 key at the same time. Press Ctrl+2 or Ctrl+@. Type inside the placeholder (which is already selected).

Advanced Matrix Operations (Mathematica Tutorial)

Finding singular values and norms of matrices. The singular values of a matrix m are the square roots of the eigenvalues of m.m^*, where * denotes Hermitian transpose. The ...

PlanckConstant (Physical Constants Package Symbol)

PlanckConstant is a universal constant of nature which relates the energy of a quantum of radiation to the frequency of the oscillator which emitted it.

Heavy Tail Distributions (Mathematica Guide)

Heavy tail means that there is a larger probability of getting very large values. So heavy tail distributions typically represent wild as opposed to mild randomness. An ...

Format > Edit Stylesheet... (Mathematica Menu Item)

Edit Stylesheet edits the style definitions for the current notebook.

ExcludedForms (Built-in Mathematica Symbol)

ExcludedForms is an option for FullSimplify which can be set to a list of patterns for expressions that should not be touched if they are encountered at intermediate steps in ...

FileDate (Built-in Mathematica Symbol)

FileDate["file"] gives the date and time at which a file was last modified. FileDate["file", " type"] gives information on the specified type of date associated with a file.

ImageRegion (Built-in Mathematica Symbol)

ImageRegion is an option for cells that specifies the size and position of the bounding box within which a graphic is rendered.