ChineseRemainder[{r_1, r_2, ...}, {m_1, m_2, ...}] gives the smallest non-negative x that satisfies all the integer congruences x mod m_i = r_i mod m_i.
ChiSquareDistribution[\[Nu]] represents a \[Chi]^2 distribution with \[Nu] degrees of freedom.
ChoiceButtons[] represents a pair of OK and Cancel buttons that close a dialog.ChoiceButtons[{act_ok, act_cancel}] represents OK and Cancel buttons that evaluate the ...
ChoiceDialog[expr] puts up a standard choice dialog that displays expr together with OK and Cancel buttons, and returns True if OK is clicked and False if Cancel is ...
CholeskyDecomposition[m] gives the Cholesky decomposition of a matrix m.
Chop
(Built-in Mathematica Symbol) Chop[expr] replaces approximate real numbers in expr that are close to zero by the exact integer 0.
Circle
(Built-in Mathematica Symbol) Circle[{x, y}, r] is a two-dimensional graphics primitive that represents a circle of radius r centered at the point x, y. Circle[{x, y}] gives a circle of radius 1. ...
CirculantGraph[n, j] gives the circulant graph with n vertices and jump j C_n (j).CirculantGraph[n, {j_1, j_2, ...}] gives the circulant graph with n vertices and jumps j_1, ...
CityData["name", " property"] gives the value of the specified property for the city with the specified name.CityData["name"] gives a list of the full specifications of ...
ClickPane[image, func] represents a clickable pane that displays as image and applies func to the x, y coordinates of each click within the pane.ClickPane[image, {{x_min, ...