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Curve that is common to two geometric objects
In geometry, an intersection curve is a curve that is common to two geometric objects. In the simplest case, the intersection of two non-parallel planes
Intersection_curve
Shape formed from points common to other shapes
an intersection between geometric objects (seen as sets of points) is a point, line, or curve common to two or more objects (such as lines, curves, planes
Intersection_(geometry)
Spheres tangent to a plane inside a cone
constant, then the above argument proves that the intersection curve C is indeed an ellipse. That the intersection of the plane with the cone is symmetric about
Dandelin_spheres
Common elements of two or more sets
said to have no intersection. In geometry, an intersection between geometric objects (seen as sets of points) is a point, line, or curve common to two or
Intersection
Plane curve: conic section
In mathematics, a parabola (/pəˈræbələ/ pə-RA-bə-lə) is a plane curve which is mirror-symmetrical and is approximately U-shaped. It fits several superficially
Parabola
Rule in two-dimensional computer graphics
infinity. Find all the intersections of C with this ray. Score up the winding number as follows: for every clockwise intersection (the curve passing through
Nonzero-rule
Figure-eight-shaped curve on a sphere
{\displaystyle z} respectively yields the orthogonal projections of the intersection curve onto the: x {\displaystyle x} - y {\displaystyle y} -plane is the
Viviani's_curve
Branch of algebraic geometry
any curves with negative self-intersection. In fact, Castelnuovo’s contraction theorem states the converse: every (−1)-curve is the exceptional curve of
Intersection_theory
Algebraic curve in mathematics
coefficients a and b in K. The curve is required to be non-singular, which means that the curve has no cusps or self-intersections. (This is equivalent to the
Elliptic_curve
A rigid body with 3 distinct axes of inertia is unstable rotating about the middle axis
trajectory of ω ( t ) {\displaystyle \omega (t)} must stay on the intersection curve between two ellipsoids defined by { ∑ i I i ω i 2 = ∑ i I i ω i (
Tennis_racket_theorem
Cone with an elliptical base
cone is a conic section (see Circular section#Elliptic cone). The intersection curve of an elliptic cone with a concentric sphere is a spherical conic
Elliptic_cone
Plane curve defined by an implicit equation
conditions under which an implicit curve locally is given by the graph of a function (so in particular it has no self-intersections). If the defining relations
Implicit_curve
Curve used in computer graphics and related fields
A Bézier curve (/ˈbɛz.i.eɪ/ BEH-zee-ay, French pronunciation: [bezje]) is a parametric curve used in computer graphics and related fields. A sequence
Bézier_curve
Generalized notion of counting curve intersections
in algebraic geometry, the intersection number generalizes the intuitive notion of counting the number of times two curves intersect to higher dimensions
Intersection_number
Curve defined as zeros of polynomials
mathematics, an affine algebraic plane curve is the zero set of a polynomial in two variables. A projective algebraic plane curve is the zero set in a projective
Algebraic_curve
Basic workflow in computer-aided geometric design
compute all parts of the intersection curve. If two surfaces intersect, the result will be a set of isolated points, a set of curves, a set of overlapping
Surface-to-surface intersection problem
Surface-to-surface_intersection_problem
Traffic intersection
another vehicle or with pedestrians on a pedestrian crossing. As the intersection curves away from the exit, the path of an exiting vehicle is relatively
Roundabout
Fastest curve descent without friction
mathematics, a brachistochrone curve (from Ancient Greek βράχιστος χρόνος (brákhistos khrónos) 'shortest time'), or curve of fastest descent, is the one
Brachistochrone_curve
Curve from a cone intersecting a plane
and beautiful results in Euclidean geometry. A conic is the curve obtained as the intersection of a plane, called the cutting plane, with the surface of
Conic_section
Mathematical algorithm
the case where the base curve is isomorphic to the projective line. In this context, a section is a morphism from the base curve to the surface whose composition
Cox–Zucker_machine
Mathematical idealization of the trace left by a moving point
mathematics, a curve (also called a curved line in older texts) is an object similar to a line, but that does not have to be straight. Intuitively, a curve may be
Curve
space, the curve formed from the intersection between a sphere and a cylinder can be a circle, a point, the empty set, or a special type of curve. For the
Sphere–cylinder_intersection
Road junction where two or more roads either meet or cross at grade
An intersection, crossroads, or at-grade junction is a junction where two or more roads converge, diverge, meet or cross at the same height, as opposed
Intersection_(road)
compared to the Weierstrass curve. The Jacobi curve can be of two types: the Jacobi intersection, that is given by an intersection of two surfaces, and the
Jacobian_curve
exactly the points of intersection of the two first polars. By Bézout's theorem these curves have (n−1)2 points of intersection and these are the poles
Polar_curve
Location of a discrete degeneracy between two electronic states
to form the cone shape, conical intersections cannot exist in these molecules. Instead, the potential energy curves experience avoided crossings if they
Conical_intersection
Intersection of a torus and a plane
and shows that intersection with a bitangent plane must produce two conics of the same type as the generator when the intersection curve is real. The torus
Villarceau_circles
Macroeconomic model relating interest rates and output
output in the short run. The intersection of the "investment–saving" (IS) and "liquidity preference–money supply" (LM) curves illustrates a "general equilibrium"
IS–LM_model
normal schemes. The intersection of the rational normal curve with an affine space is called the moment curve. The rational normal curve may be given parametrically
Rational_normal_curve
Number of intersection points of algebraic curves and hypersurfaces
volume 1 of his Principia in 1687, where he claims that two curves have a number of intersection points given by the product of their degrees. However, Newton
Bézout's_theorem
Description of how spaces intersect in mathematics
two curves can be transverse only when they have empty intersection, since their tangent spaces could generate at most a two-dimensional space. Curves transverse
Transversality
Geometry of road design
roadway, measured in meters or feet L = curve length (along the x-axis) PVI = point of vertical interception (intersection of initial and final grades) S = headlight
Geometric_design_of_roads
Set of points equidistant from a center
intersection of a plane that contains the normal with the surface will form a curve that is called a normal section, and the curvature of this curve is
Sphere
Curve simplification algorithm
end-point fit algorithm, is an algorithm that decimates a curve composed of line segments to a similar curve with fewer points. It was one of the earliest successful
Ramer–Douglas–Peucker algorithm
Ramer–Douglas–Peucker_algorithm
Topological model
The Dimensionally Extended 9-Intersection Model (DE-9IM) is a topological model and a standard used to describe the spatial relations of two regions (two
DE-9IM
Plane curve: conic section
mathematics, a hyperbola (/haɪˈpɜːrbələ/ hy-PUR-bə-lə) is a type of smooth curve lying in a plane, defined by its geometric properties or by equations for
Hyperbola
Theorem in topology
self-intersection points. With these definitions, the Jordan curve theorem can be stated as follows: Theorem—Let C {\displaystyle C} be a Jordan curve in
Jordan_curve_theorem
Curve traced by a point on a rolling circle
example of a roulette, a curve generated by a curve rolling on another curve. The cycloid, with the cusps pointing upward, is the curve of fastest descent under
Cycloid
Distinguished surfaces of dynamic trajectories
plane Π {\displaystyle \Pi } by n Π {\displaystyle n_{\Pi }} . The intersection curve of a 2D repelling LCS surface with the plane Π {\displaystyle \Pi
Lagrangian_coherent_structure
Type of plane curve
each of its points. For a convex curve, every line in the plane intersects the curve in one of four ways: its intersection can be the empty set, a single
Convex_curve
Algebraic curve in projective 3-space
hypersurface, in fact not a complete intersection. It is the three-dimensional case of the rational normal curve, and is the image of a Veronese map of
Twisted_cubic
Concept in differential geometry
that point. The curve of intersection of the plane and the surface has zero curvature at that point. An asymptotic curve is a curve such that, at each
Asymptotic_curve
Plane spiral projected onto the surface of a cone
\varphi \geq 0\ .} In this case the conical spiral can be seen as the intersection curve of the cone with a helicoid. 2) The second diagram shows a conical
Conical_spiral
after the French mathematician Charles Dupin, is the statement: The intersection curve of any pair of surfaces of different pencils of a threefold orthogonal
Dupin's_theorem
Mathematical paradox
paradox is the statement that the number of points of intersection of two higher-order curves in the plane can be greater than the number of arbitrary
Cramer's_paradox
Economic concept
constant. Price-consumption curves are constructed by taking the intersection points between a series of indifference curves and their corresponding budget
Price-consumption_curve
Curve whose range contains the unit square
In mathematical analysis, a space-filling curve is a curve whose range reaches every point in a higher dimensional region, typically the unit square (or
Space-filling_curve
Curve on an illuminated surface through points of equal brightness
{v}}-c\;|\nabla f(x,y,z)|&=0,\end{aligned}}} which can be considered as the intersection curve of two implicit surfaces. Using the tracing algorithm of Bajaj et
Isophote
Market structure with one buyer
upward-sloping labour supply curve (as generally contrasted with an infinitely elastic labour supply curve), represented by the S blue curve in the diagram on the
Monopsony
Type of mathematical curve
In mathematics, a plane cubic curve, often called simply a cubic, is a plane algebraic curve defined by a homogeneous polynomial of degree 3 in three variables
Plane_cubic_curve
Curve in the dual projective plane made from all lines tangent to a given curve
dual curve of a given plane curve C is a curve in the dual projective plane consisting of the set of lines tangent to C. There is a map from a curve to
Dual_curve
State highway in eastern Georgia
Corrections. Just before an intersection with Osburn Road, they curve back to the northwest. Just past The Mall at Waycross, they curve to the west-northwest
Georgia_State_Route_4
Economic model of price determination in a market
demand curve is not a mathematical requirement of microeconomic rationality, it challenges the assumption that simple supply and demand intersections can
Supply_and_demand
Concept in economics
since the point(s) of intersection would have equal utility). Transitive with respect to points on distinct indifference curves. That is, if each point
Indifference_curve
Section of pathway that changes direction
curve Compound curve Transition curve Reverse curve Deviation curve Two types of vertical curves on roads: Valley curve Summit curve A simple curve has
Road_curve
Study of geometry using a coordinate system
dimensions, a single equation usually gives a surface, and a curve must be specified as the intersection of two surfaces (see below), or as a system of parametric
Analytic_geometry
use Deligne's formula to define intersection cohomology with coefficients in a local system. Given a smooth elliptic curve X ⊂ C P 2 {\displaystyle X\subset
Intersection_homology
(left) W1-2R Curve (right) W1-2L Curve (left) W1-3R Reverse turn (right) W1-3L Reverse turn (left) W1-4R Reverse curve (right) W1-4L Reverse curve (left) CW1-4R
Road signs in the United States
Road_signs_in_the_United_States
intersection on a curve to left (W2-15) Crossroad intersection on a curve to right (W2-16) Side road intersection, entering straight ahead on a curve to left (W2-16)
Road_signs_in_Australia
Set of points that satisfy some specified conditions
by two associated curves depending on one common parameter. If the parameter varies, the intersection points of the associated curves describe the locus
Locus_(mathematics)
Type of road intersection with three arms
three-way junction (or three-way intersection) is a type of road intersection with three arms. A Y junction (or Y intersection) generally has three arms of
Three-way_junction
Mathematical object
the curve of intersection of a torus and a plane parallel to its rotational symmetry axis. However, this definition does not include all of the curves given
Spiric_section
Line that intersects a curve at least twice
only a finite number of points. Elliptic curve, a curve for which every secant has a third point of intersection, from which most of a group law may be
Secant_line
Highway in Georgia
They curve to the northwest for a brief portion. Just before entering Folkston, where they use the Second Street name. They have an intersection with
U.S._Route_1_in_Georgia
Street in Helsinki, Finland
Kaarlenkatu. The avenue part ends at the intersection with Kaarlenkatu. There is a small asphalt-paved square at the intersection, with many pubs around it, the
Helsinginkatu
intersection with any vertical plane through the origin (a plane with equation y = m x {\displaystyle y=mx} or x = 0 {\displaystyle x=0} ) is a curve
Peano_surface
Graphical analysis tool for electronic circuit engineering
at the intersection of the curve with the load line. In a circuit with a three terminal device, such as a transistor, the current–voltage curve of the
Load_line_(electronics)
Property of a planar simple closed curve
which has no other self-intersections), the curve orientation is said to be positive or counterclockwise, if one always has the curve interior to the left
Curve_orientation
System for rating game players
be taken directly from the standard tables of the areas under the normal curve when the difference in rating is expressed as a z score. Since the standard
Elo_rating_system
Conic sections with the same foci
Dupin's theorem on threefold orthogonal systems of surfaces, the intersection curve of any two confocal quadrics is a line of curvature. Analogously to
Confocal_conic_sections
Mathematical measure of how much a curve or surface deviates from flatness
the intersection point of two infinitely close normal lines to the curve. Intuitively, curvature describes for any part of a curve how much the curve direction
Curvature
Subset of a function's domain on which its value is equal
variables is two, a level set is called a level curve, also known as contour line or isoline; so a level curve is the set of all real-valued solutions of an
Level_set
Common point(s) shared by two lines in Euclidean geometry
In Euclidean geometry, the intersection of a line and a line can be the empty set, a single point, or a line (if they coincide). Distinguishing these cases
Line–line_intersection
Curve in a road that has claimed lives because of numerous crashes
Dead Man's Curve is an American nickname for a curve in a road that has claimed many lives because of numerous crashes. A curve on Sunset Boulevard in
Dead_Man's_Curve
Cubic plane curve
plane curve notable for its trisectrix property, meaning it can be used to trisect an angle. It can be defined as locus of the point of intersection of two
Trisectrix_of_Maclaurin
Mathematical object studied in the field of algebraic geometry
{\displaystyle y^{2}z=x^{3}-xz^{2},} which defines a curve in P2 called an elliptic curve. The curve has genus one (genus formula); in particular, it is
Algebraic_variety
Roulette curve made from circles with radii that differ by factors of 3 or 1.5
deltoid curve, also known as a tricuspoid curve or Steiner curve, is a hypocycloid of three cusps. In other words, it is the roulette (type of curve) created
Deltoid_curve
State highway in Georgia, United States
Just past Westview Drive, it curves back to the east. At an intersection with Anderson Avenue, the highway begins a curve to the east-southeast. Then,
Georgia_State_Route_96
Intersection graph for curves in the plane
In graph theory, a string graph is an intersection graph of curves in the plane; each curve is called a "string". Given a graph G, G is a string graph
String_graph
Concept in algebraic geometry
and the fibers of f {\displaystyle f} do not contain rational curves of self-intersection − 1 {\displaystyle -1} , then the fibration is called minimal
Canonical_bundle
Berner in 1865. However these results, like many others in classical intersection theory, do not seem to have been given complete proofs until the work
Steiner's_conic_problem
Fundamental principle in microeconomics
represented by a graph called the demand curve, with quantity demanded on the x-axis and price on the y-axis. Demand curves are downward sloping by definition
Law_of_demand
Variant form of the Catmull-Rom spine
formulation. First, loops and self-intersections do not occur within a curve segment. Second, cusps will never occur within a curve segment. Third, it follows
Centripetal Catmull–Rom spline
Centripetal_Catmull–Rom_spline
Amount of a good that sellers are willing to provide in the market
the point of intersection. The coefficient of elasticity decreases as one moves "up" the curve. However, all points on the supply curve will have a coefficient
Supply_(economics)
Highway in Georgia, United States
around the SR 113 intersection. Just to the east of Oak Shade Road, the concurrency curves to the northeast. They begin a gradual curve back to the east-southeast
U.S._Route_78_in_Georgia
Curve external to a family of curves in geometry
be thought of as the intersection of two "infinitesimally adjacent" curves, meaning the limit of intersections of nearby curves. This idea can be generalized
Envelope_(mathematics)
Characteristic of an electrical generator
Capability curve of an electrical generator describes the limits of the active (MW) and reactive power (MVAr) that the generator can provide. The curve represents
Capability_curve
hypotheses, the curve C is a circle if and only if its intersection with the plane at infinity is included in the ombilic (the curve at infinity of equation
Circular_section
intercept, y-intercept, x-intercept Intersection number Intrinsic equation Isoperimetric inequality Jordan curve Jordan curve theorem Knot Limit cycle Linking
List_of_curves_topics
right ahead P2-9I Intersection in curve (left) P2-9D Intersection in curve (right) P2-10I Curve with external side road (left) P2-10D Curve with external
Road_signs_in_Ecuador
Three-dimensional fractal
is accordingly identified as a curve. Each face of the construction becomes a Sierpinski carpet, and the intersection of the sponge with any diagonal
Menger_sponge
Mathematical concept
The intersection matrix determines the fiber type with three exceptions: If the intersection matrix is 0 the fiber can be either an elliptic curve (type
Elliptic_surface
Gentle curve to the left Gentle curve to the right Crossroads T-intersection T-junction Y-junction Curve Sharp curve Double curve Double sharp curve Winding
Road_signs_in_Japan
Spherical geometry analog of a straight line
In mathematics, a great circle or orthodrome is the circular intersection of a sphere and a diametral plane, which is a plane passing through the sphere's
Great_circle
Diagram that shows all possible logical relations between a collection of sets
and read "the intersection of S and T", is represented visually by the area of overlap of the regions S and T. In Venn diagrams, the curves are overlapped
Venn_diagram
State highway in Kentucky, USA
immediately is an intersection with the southern terminus of KY 1323 (Bull Run Road). It passes New Columbia Cemetery before curving to the northeast and
Kentucky_Route_206
Cost added by producing one additional unit of a product or service
cost curve and the average cost curve intersect, the average cost curve is downwards sloping, however after the intersection, the average cost curve is
Marginal_cost
(right) Curve to the left Curve to the right Intersection on a curve (left) Intersection on a curve (right) Double curve to the left Double curve to the
Road_signs_in_Qatar
Graph representing intersections between given sets
string graph is the intersection graph of curves on a plane. A graph has boxicity k if it is the intersection graph of multidimensional boxes of dimension
Intersection_graph
Mathematical concept
smooth plane curves (including piecewise smooth plane curves), and algebraic plane curves. Plane curves also include the Jordan curves (curves that enclose
Plane_curve
travel, tourism, insurance
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travel, tourism, insurance