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A basis, form, function, etc., in two or more variables is said to be multilinear if it is linear in each variable separately.

Two vectors u and v are parallel if their cross product is zero, i.e., uxv=0.

Combine the two above squares on the left into the single large square on the right.

The type of motion executed by a dynamical system containing two incommensurate frequencies.

The word saltus has two different meanings: either a jump or an oscillation of a function.

Roughly speaking, a tangent vector is an infinitesimal displacement at a specific point on a manifold. The set of tangent vectors at a point P forms a vector space called the ...

If P is a point on the circumcircle of a reference triangle, then the line PP^(-1), where P^(-1) is the isogonal conjugate of P, is called the antipedal line of P. It is a ...

Suppose P=p:q:r and U=u:v:w are points, neither lying on a sideline of DeltaABC. Then the cevapoint of P and U is the point (pv+qu)(pw+ru):(qw+rv)(qu+pv) :(ru+pw)(rv+qw).

A polygon whose interior consists of all points in the plane which are closer to a particular lattice point than to any other. The generalization to n dimensions is called a ...

The word quantile has no fewer than two distinct meanings in probability. Specific elements x in the range of a variate X are called quantiles, and denoted x (Evans et al. ...