# Intersection

91

**Plane–sphere intersection**— 1. No intersection. 2. Point intersection. 3. Circle intersection.In the theory of analytic geometry for real three dimensional space, the intersection of a plane and a sphere can be the empty set, a point, or a circle.Distinguishing these cases …92

**Quadrant roadway intersection**— A quadrant roadway intersection includes an extra roadway between two legs of the intersection. This roadway adds two three way intersections in addition to the original four way intersection.The advantage is that all left turns1 are removed from …93

**Matroid intersection**— In combinatorial optimization, the matroid intersection problem is to find a largest common independent set in two matroids over the same ground set. If the elements of the matroid are assigned real weights, the weighted matroid intersection… …94

**Conical intersection**— Ideal Conical Intersection In quantum chemistry, a conical intersection of two potential energy surfaces of the same spatial and spin symmetries is the set of molecular geometry points where the two potential energy surfaces are degenerate… …95

**Line-line intersection**— In Euclidean geometry, the intersection of a line and a line can be the empty set, a point, or a line. Distinguishing these cases, and finding the intersection point have use, for example, in computer graphics, motion planning, and collision… …96

**Seagull intersection**— A seagull intersection is a common type of three way at grade intersection, usually used on high traffic volume roads and dual carriageways. This form of intersection is popular in Australia and New Zealand. Design Note: This section refers to… …97

**At-grade intersection**— A diagram of an at grade intersection An unusual at …98

**Line–sphere intersection**— 1. No intersection. 2. Point intersection. 3. Two point intersection.In analytic geometry, a line and a sphere can intersect in three ways: no intersection at all, at exactly one point, or in two points. Methods for distinguishing these cases,… …99

**Balise d'intersection en France**— Balise d’intersection J3 La balise d’intersection est une balise routière, codée J3 en France, qui matérialise une intersection, généralement hors agglomération, quel que soit le régime de priorité établi. Elle est implantée lorsqu une des voies… …100

**Covariance intersection**— is an algorithm for combining two or more estimates of state variables in a Kalman filter when the correlation between them is unknown.[1][2][3] Specification Items of information a and b are known and are to be fused into information item c. We… …