OutputControllabilityMatrix[ss] gives the output controllability matrix of the StateSpaceModel object ss.
PaletteNotebook[{cell_1, cell_2, ...}] represents a palette notebook that can be manipulated by the Mathematica front end.
PaneSelector[{v_1 -> expr_1, v_2 -> expr_2, ...}, v] represents an object that displays as a pane containing the expr_i for which v_i is equal to v.
Parallelization is an option for Compile that specifies whether it should create a compiled function that could run in parallel.
Paste
(Built-in Mathematica Symbol) Paste[expr] pastes expr at the current insertion point in the input notebook. Paste[notebook, expr] pastes expr to the specified notebook.Paste[] pastes the contents of the ...
PathGraphQ[g] yields True if the graph g is a path and False otherwise.
PermutationListQ[expr] returns True if expr is a valid permutation list and False otherwise.
PeronaMalikFilter[image] applies a Perona\[Dash]Malik diffusion filter to image.PeronaMalikFilter[image, t] specifies the amount of diffusion t to be applied. ...
PlotRangePadding is an option for graphics functions that specifies how much further axes etc. should extend beyond the range of coordinates specified by PlotRange.
PrimeQ
(Built-in Mathematica Symbol) PrimeQ[expr] yields True if expr is a prime number, and yields False otherwise.