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Iterative method for minimizing convex functions
the ellipsoid method is an iterative method for minimizing convex functions over convex sets. The ellipsoid method generates a sequence of ellipsoids whose
Ellipsoid_method
Quadric surface that looks like a deformed sphere
An ellipsoid is a surface that can be obtained from a sphere by deforming it by means of directional scalings, or more generally, of an affine transformation
Ellipsoid
Algorithms for solving convex optimization problems
simplex method, which has exponential run-time in the worst case. Practically, they run as fast as the simplex method—in contrast to the ellipsoid method, which
Interior-point_method
Subfield of convex optimization
the ellipsoid method is exponential in n. But in most applications, R is not so huge. In these cases, the ellipsoid method is the only known method that
Semidefinite_programming
Geometric figure which approximates the Earth's shape
slightly more than 21 km or 0.335%. Many methods exist for determination of the axes of an Earth ellipsoid, ranging from meridian arcs up to modern satellite
Earth_ellipsoid
Soviet and American mathematician and computer scientist
known for his four-page February 1979 paper that indicated how an ellipsoid method for linear programming can be implemented in polynomial time. The paper
Leonid_Khachiyan
Ellipsoid most closely containing, or contained in, an n-dimensional convex object
In mathematics, the John ellipsoid or Löwner–John ellipsoid E(K) associated to a convex body K in n-dimensional Euclidean space R n {\displaystyle \mathbb
John_ellipsoid
Set of related approximation algorithms for the bin packing problem
of the ellipsoid method with the approximate separation oracle is O ( Q m n / δ ) {\displaystyle O(Qmn/\delta )} . During the ellipsoid method, we use
Karmarkar–Karp bin packing algorithms
Karmarkar–Karp_bin_packing_algorithms
Russian and Israelian mathematician
optimization and is best known for his work on the ellipsoid method, modern interior-point methods and robust optimization. Nemirovski earned a Ph.D.
Arkadi_Nemirovski
Black-box description of a convex set
a method to describe a convex set that is given as an input to an optimization algorithm. Separation oracles are used as input to ellipsoid methods. Let
Separation_oracle
Linear programming algorithm
efficient algorithm that solves these problems in polynomial time. The ellipsoid method is also polynomial time but proved to be inefficient in practice. Denoting
Karmarkar's_algorithm
method. Instead of maintaining the feasible polytope Gt, it maintains an ellipsoid that contains it. Computing the center-of-gravity of an ellipsoid is
Center-of-gravity_method
Algorithm for finding zeros of functions
In numerical analysis, the Newton–Raphson method, also known simply as Newton's method, named after Isaac Newton and Joseph Raphson, is a root-finding
Newton's_method
Method to solve optimization problems
of the ellipsoid method is to enclose the feasible region in a sequence of ellipsoids of decreasing volume. At each iteration step, the ellipsoid midpoint
Linear_programming
Optimizing objective functions that have constrained variables
nonlinear programming. It can still be solved in polynomial time by the ellipsoid method if the objective function is convex; otherwise the problem may be NP
Constrained_optimization
algorithm uses the central-cut ellipsoid method. Another option is to use another method that uses simplices instead of ellipsoids. An oracle for WVIOL, with
Algorithmic problems on convex sets
Algorithmic_problems_on_convex_sets
Numerical approximation algorithm
method like gradient descent, hill climbing, Newton's method, or quasi-Newton methods like BFGS, is an algorithm of an iterative method or a method of
Iterative_method
Upper bound on a graph's Shannon capacity
be computed in polynomial time by semidefinite programming and the ellipsoid method. The Lovász number of the complement of any graph is sandwiched between
Lovász_number
Numerical optimization algorithm
The Nelder–Mead method (also downhill simplex method, amoeba method, or polytope method) is a numerical method used to find a local minimum or maximum
Nelder–Mead_method
Study of mathematical algorithms for optimization problems
minimization problems (similar to conjugate gradient methods). Ellipsoid method: An iterative method for small problems with quasiconvex objective functions
Mathematical_optimization
Shortest paths on a bounded deformed sphere-like quadric surface
The study of geodesics on an ellipsoid arose in connection with geodesy specifically with the solution of triangulation networks. The figure of the Earth
Geodesics_on_an_ellipsoid
Geodetic reference system
astro-geodetic methods already described.) The sole contribution of satellite data to the development of WGS 60 was a value for the ellipsoid flattening which
World_Geodetic_System
Plane curve
useful to find the minimum bounding ellipse on a set of points. The ellipsoid method is quite useful for solving this problem. Solar System portal Science
Ellipse
Algorithm for linear programming
point methods: these include Khachiyan's ellipsoidal algorithm, Karmarkar's projective algorithm, and path-following algorithms. The Big-M method is an
Simplex_algorithm
Geographic coordinate specifying north-south position
the angle formed between the vector perpendicular (or normal) to the ellipsoidal surface from the point, and the plane of the equator. Two levels of abstraction
Latitude
Class of algorithms for solving constrained optimization problems
Lagrangian methods are a certain class of algorithms for solving constrained optimization problems. They have similarities to penalty methods in that they
Augmented_Lagrangian_method
Subfield of mathematical optimization
functions. Cutting-plane methods Ellipsoid method Subgradient method Dual subgradients and the drift-plus-penalty method Subgradient methods can be implemented
Convex_optimization
Optimization algorithm
In numerical analysis, a quasi-Newton method is an iterative numerical method used either to find zeroes or to find local maxima and minima of functions
Quasi-Newton_method
System to specify locations on Earth
standards, also includes a choice of geodetic datum (including an Earth ellipsoid), as different datums will yield different latitude and longitude values
Geographic_coordinate_system
They proved that the inscribed ellipsoid method is more computationally efficient than the circumscribed ellipsoid method. A Fisher market is a simpler
Arrow–Debreu_exchange_market
Reference ellipsoid in geodesy
dimensions of the Earth ellipsoid axes were defined by logarithms in keeping with former calculation methods. The Bessel ellipsoid fits especially well to
Bessel_ellipsoid
Combinatorial optimization problem
the simplex algorithm, or in worst-case polynomial time using the ellipsoid method, each specialization has a smaller solution space and thus more efficient
Assignment_problem
Visual representation of atoms' thermal vibration in a crystal structure
crystallography, thermal ellipsoids, more formally termed atomic displacement parameters or anisotropic displacement parameters, are ellipsoids used to indicate
Thermal_ellipsoid
Algorithm analysis method
roughly linear. The simplex algorithm is in fact much faster than the ellipsoid method in practice, although the latter has polynomial-time worst-case complexity
Smoothed_analysis
Computational problem of graph theory
open, but the LP can be solved in weakly polynomial time using the ellipsoid method. Bidirectional search – An algorithm that finds the shortest path between
Shortest_path_problem
polynomial-time approximation scheme for the Lovász number, based on the ellipsoid method and provided by Grötschel, Lovász & Schrijver (1981). Approximating
Tardos_function
Solving an optimization problem with a quadratic objective function
positive definite Q, the minization problem is convex. Hence, the ellipsoid method can be used to solve the problem in (weakly) polynomial time. This
Quadratic_programming
Reference frame for measuring location
planetary datums. Since the rise of the global positioning system (GPS), the ellipsoid and datum WGS 84 it uses has supplanted most others in many applications
Geodetic_datum
Distance from the Earth surface to a point near its center
surface. Approximating the figure of Earth by an Earth spheroid (an oblate ellipsoid), the radius ranges from a maximum (equatorial radius, denoted a) of about
Earth_radius
Award for advancements in discrete mathematics
Khachiyan, Martin Grötschel, László Lovász and Alexander Schrijver for the ellipsoid method in linear programming and combinatorial optimization. G. P. Egorychev
Fulkerson_Prize
Sequential model-based optimization of expensive black-box functions
or unreliable. The objective need not have a closed-form expression. The method constructs a probabilistic model of the unknown function, often a Gaussian
Bayesian_optimization
Optimization algorithm
Gradient descent is a method for unconstrained mathematical optimization. It is a first-order iterative algorithm for minimizing a differentiable multivariate
Gradient_descent
Concept in convex optimization mathematics
Subgradient methods are convex optimization methods which use subderivatives. Originally developed by Naum Z. Shor and others in the 1960s and 1970s,
Subgradient_method
Size and shape used to model the Earth for geodesy
celestial body is called a reference ellipsoid. The reference ellipsoid for Earth is called an Earth ellipsoid. An ellipsoid of revolution is uniquely defined
Figure_of_the_Earth
Set-to-real map with diminishing returns
Lecture 17" (PDF). Grötschel, M.; Lovasz, L.; Schrijver, A. (1981). "The ellipsoid method and its consequences in combinatorial optimization". Combinatorica
Submodular_set_function
the properties of overlapping subproblems and optimal substructure Ellipsoid method: is an algorithm for solving convex optimization problems Evolutionary
List_of_algorithms
Algorithm used to solve non-linear least squares problems
algorithm (LMA or just LM), also known as the damped least-squares (DLS) method, is used to solve non-linear least squares problems. These minimization
Levenberg–Marquardt_algorithm
Type of algorithm for constrained optimization
optimization, penalty methods are a certain class of algorithms for solving constrained optimization problems. A penalty method replaces a constrained
Penalty_method
Problem optimization method
programming (DP) is both a mathematical optimization method and an algorithmic paradigm. The method was developed by Richard Bellman in the 1950s and has
Dynamic_programming
Least-weight tree connecting graph vertices
fractional MST problem can be solved in polynomial time using the ellipsoid method. However, if we add a requirement that f(e) must be half-integer (that
Minimum_spanning_tree
A rigid body with 3 distinct axes of inertia is unstable rotating about the middle axis
ellipsoid – Geometric method for visualizing a rotating rigid body Polhode – Curve produced by the angular velocity vector on the inertia ellipsoid Эффект
Tennis_racket_theorem
Optimization method
algorithm is an iterative method for solving unconstrained nonlinear optimization problems. Like the related Davidon–Fletcher–Powell method, BFGS determines the
Broyden–Fletcher–Goldfarb–Shanno algorithm
Broyden–Fletcher–Goldfarb–Shanno_algorithm
Bland, Robert G.; Goldfarb, Donald; Todd, Michael J. (1981). "The Ellipsoid Method: A Survey" (PDF). Operations Research. 29 (6): 1039–1091. doi:10.1287/opre
List of Armenian inventors and discoverers
List_of_Armenian_inventors_and_discoverers
Geographic coordinate system
geodesy based on a reference ellipsoid. They include geodetic latitude (north/south) ϕ, longitude (east/west) λ, and ellipsoidal height h (also known as geodetic
Geodetic_coordinates
algorithm proposed for powers of two by Georg Bruun 1979 – Khachiyan's ellipsoid method developed by Leonid Khachiyan 1979 – ID3 decision tree algorithm developed
Timeline_of_algorithms
Solvability theorem for finite systems of linear inequalities
non-negative solution was not known to be in P, until it was proved using the ellipsoid method. The Farkas Lemma has several variants with different sign constraints
Farkas'_lemma
Methods in geodesy
Vincenty relied on formulation of this method given by Rainsford, 1955. Legendre showed that an ellipsoidal geodesic can be exactly mapped to a great
Vincenty's_formulae
Optimization algorithm
The descent direction can be computed by various methods, such as gradient descent or quasi-Newton method. The step size can be determined either exactly
Line_search
Methods of detecting exoplanets usually rely on indirect strategies – that is, they do not directly image the planet but deduce its existence from another
Methods of detecting exoplanets
Methods_of_detecting_exoplanets
Russian university
Soviet-American mathematician and computer scientist famous for his Ellipsoid method for linear programming, Fulkerson Prize (1982) Vadim Knizhnik – physicist
Moscow Institute of Physics and Technology
Moscow_Institute_of_Physics_and_Technology
Optimization technique for solving (mixed) integer linear programs
In mathematical optimization, the cutting-plane method is any of a variety of optimization methods that iteratively refine a feasible set or objective
Cutting-plane_method
Graph with tight clique-coloring relation
nearest integer. The solution method for semidefinite programs, used by this algorithm, is based on the ellipsoid method for linear programming. It leads
Perfect_graph
Measure of capacity of a communications channel defined from a graph
numerically to high accuracy in polynomial time by an algorithm based on the ellipsoid method. The Shannon capacity of a graph G is bounded from below by α(G), and
Shannon_capacity_of_a_graph
Concept from linear programming
algorithms for solving an LP in weakly-polynomial time, such as the ellipsoid method; however, they usually return optimal solutions that are not basic
Basic_feasible_solution
main methods of calculating this "centre": either as the centroid of the two-dimensional shape made by the country (projected to the Airy ellipsoid then
Centre points of the United Kingdom
Centre_points_of_the_United_Kingdom
Mathematical optimization problem restricted to integers
the branch and bound method. For example, the branch and cut method that combines both branch and bound and cutting plane methods. Branch and bound algorithms
Integer_programming
Academic journal
Alexander Schrijver on the ellipsoid method, awarded the 1982 Fulkerson Prize. M. Grötschel, L. Lovász, A. Schrijver: The ellipsoid method and its consequences
Combinatorica
Computing the fixed point of a function
L\leq 1} , the optimal algorithm is the interior-ellipsoid algorithm (based on the ellipsoid method). It finds an ε-residual fixed-point using O ( d ⋅
Fixed-point_computation
Optimization algorithm
LM-BFGS) is an optimization algorithm in the collection of quasi-Newton methods that approximates the Broyden–Fletcher–Goldfarb–Shanno algorithm (BFGS)
Limited-memory_BFGS
Geometric method for visualizing a rotating rigid body
the motion of its inertia ellipsoid, which is rigidly fixed to the rigid body like a coordinate frame. Its inertia ellipsoid rolls, without slipping, on
Poinsot's_ellipsoid
German mathematician (born 1948)
His publications together with L. Lovász and A. Schrijver on the ellipsoid method and its application in the combinatorial and convex optimization gained
Martin_Grötschel
Volume rendering technique
covariance of the Gaussians can be thought of as configurations of an ellipsoid, which can be mathematically decomposed into a scaling matrix and a rotation
Gaussian_splatting
Algorithm for finding a local minimum of a function
Powell's method, strictly Powell's conjugate direction method, is an algorithm proposed by Michael J. D. Powell for finding a local minimum of a function
Powell's_method
Solution process for some optimization problems
to the higher computational load and little theoretical benefit. Another method involves the use of branch and bound techniques, where the program is divided
Nonlinear_programming
Method of solving linear programming problems
operations research, the Big M method is a method of solving linear programming problems using the simplex algorithm. The Big M method extends the simplex algorithm
Big_M_method
M method — variation of simplex algorithm for problems with both "less than" and "greater than" constraints Interior point method Ellipsoid method Karmarkar's
List of numerical analysis topics
List_of_numerical_analysis_topics
Mathematical model of computer
MR 1832422. Grötschel, M.; Lovász, L.; Schrijver, A. (1981-06-01). "The ellipsoid method and its consequences in combinatorial optimization". Combinatorica
Real_RAM
Sequence of locally optimal choices
minimization Cutting-plane method Reduced gradient (Frank–Wolfe) Subgradient method Linear and quadratic Interior point Affine scaling Ellipsoid algorithm of Khachiyan
Greedy_algorithm
Science of measuring the shape, orientation, and gravity of Earth
reference ellipsoid is called geoidal undulation, and it varies globally between ±110 m based on the GRS 80 ellipsoid. A reference ellipsoid, customarily
Geodesy
Hungarian-American mathematician and computer scientist
computer science. It was Gács and László Lovász who first brought ellipsoid method to the attention of the international community in August 1979 by publishing
Peter_Gacs
Ocean shape without winds and tides
expressed as a geoid undulation or geoidal height above a given reference ellipsoid, which is a slightly flattened sphere whose equatorial bulge is caused
Geoid
Three-dimensional coordinate system
Ellipsoidal coordinates are a three-dimensional orthogonal coordinate system ( λ , μ , ν ) {\displaystyle (\lambda ,\mu ,\nu )} that generalizes the two-dimensional
Ellipsoidal_coordinates
Statistical distance measure
h} data points, but the Minimum Volume Ellipsoid estimates multivariate location and scatter from the ellipsoid of minimal volume that encapsulates the
Mahalanobis_distance
Methods in numerical computation
Rosenbrock methods refers to either of two distinct ideas in numerical computation, both named for Howard H. Rosenbrock. Rosenbrock methods for stiff differential
Rosenbrock_methods
Numerical optimization process
and can be solved in time n O ( d ) {\textstyle n^{O(d)}} using the ellipsoid method. A Hermitian polynomial is a function of n {\displaystyle n} complex
Sum-of-squares_optimization
Soviet and Ukrainian mathematician
that was created in collaboration with Nikolay G. Zhurbenko. The ellipsoid method was re-invigorated by A.S. Nemirovsky and D.B. Yudin, who developed
Naum_Z._Shor
Optimization method
optimizer of (P1) can be found by solving (P1) using the ellipsoid method or interior point methods. The set of tight constraints in an interior optimizer
Lexicographic max-min optimization
Lexicographic_max-min_optimization
Solutions of Lamé's equation
In mathematics, a Lamé function, or ellipsoidal harmonic function, is a solution of Lamé's equation, a second-order ordinary differential equation. It
Lamé_function
Subfield of mathematical optimization
Chakrabarti, Bikas K, eds. (2005). Quantum Annealing and Related Optimization Methods. Lecture Notes in Physics. Vol. 679. Springer. Bibcode:2005qnro.book..
Combinatorial_optimization
Optimization algorithm
programming (SQP) is an iterative method for constrained nonlinear optimization, also known as Lagrange-Newton method. SQP methods are used on mathematical problems
Sequential quadratic programming
Sequential_quadratic_programming
Solution in cooperative games
nucleolus can be computed efficiently. The algorithm is based on the ellipsoid method and on a scheme of Maschler for approximating the prekernel. Guajardo
Nucleolus_(game_theory)
Economical computational problem
and thus can be approximated in wealky-polynomial time (e.g. by the ellipsoid method). Fabrikant, Papadimitriou and Talwar presented a strongly-polytime
Nash_equilibrium_computation
Distance measured along the surface of the Earth
{\displaystyle f^{0}} -order approximation method: Spherical earth higher-order approximations based on Ellipsoid: f 1 {\displaystyle f^{1}} : Andoyer(1932);
Geographical_distance
Optimization by removing non-optimal solutions to subproblems
Branch-and-bound (BB, B&B, or BnB) is a method for solving optimization problems by breaking them down into smaller subproblems and using a bounding function
Branch_and_bound
Akademii Nauk SSSR (in Russian). 244: 1093–1096.. Khachiyan's work on the ellipsoid method. This was the first polynomial time algorithm for linear programming
List of publications in mathematics
List_of_publications_in_mathematics
Linear programming algorithm
the revised simplex method is a variant of George Dantzig's simplex method for linear programming. The revised simplex method is mathematically equivalent
Revised_simplex_method
Term in mathematical optimization
reasonable approximation. Trust-region methods are in some sense dual to line-search methods: trust-region methods first choose a step size (the size of
Trust_region
Mercator variant map projection
formulas at all scales whereas large-scale Mercator maps normally use the ellipsoidal form of the projection.[citation needed] The discrepancy is imperceptible
Web_Mercator_projection
Optimization algorithm
known as the conditional gradient method, reduced gradient algorithm and the convex combination algorithm, the method was originally proposed by Marguerite
Frank–Wolfe_algorithm
Collective behavior of decentralized, self-organized systems
systems. Their simulations showed the social potential fields method is robust in that the method can tolerate errors in sensors and actuators. The Social
Swarm_intelligence
ELLIPSOID METHOD
ELLIPSOID METHOD
Boy/Male
Muslim
Method, Way, Mode, Manner, One who crosses the river of life, Morning star
Boy/Male
Tamil
Vedhanth | வேதாநà¯à®¤
The scriptures, Vedic method of self realization, Knower of the Vedas, One who knows all, Hindu philosophy or ultimate wisdom, King of all
Vedhanth | வேதாநà¯à®¤
Boy/Male
Indian
Method, Way, Mode, Manner, One who crosses the river of life, Morning star
Boy/Male
English American
From the west meadow. John and Charles Wesley were the founders of Methodism.
Boy/Male
Muslim
Method, Way, Mode, Manner, One who crosses the river of life, Morning star
Surname or Lastname
English
English : topographic name from Middle English lang, long ‘long’ + strete ‘road’.Translation of Dutch Langestraet, cognate with 1.The confederate general James Longstreet (1821–1904), was born in SC, came from an old Dutch family in New Netherland with the name Langestraet; he was the nephew of Augustus B. Longstreet, a Methodist clergyman born in Augusta, GA, in 1790.
Girl/Female
Tamil
Method, Wealth, Protection, Conduct, Auspiciousness, Memory, Well being
Boy/Male
Tamil
The scriptures, Vedic method of self realization, Knower of the Vedas, One who knows all, Hindu philosophy or ultimate wisdom, King of all
Surname or Lastname
English (of Norman origin) and French
English (of Norman origin) and French : status name for a professional champion, especially an agent employed to represent one of the parties in a trial by combat, a method of settling disputes current in the Middle Ages. The word comes from Old French champion, campion (Late Latin campio, genitive campionis, a derivative of campus ‘plain’, ‘field of battle’). Compare Campion, Kemp.
Boy/Male
Tamil
The scriptures, Vedic method of self realization, Knower of the Vedas, One who knows all, Hindu philosophy or ultimate wisdom, King of all
Boy/Male
Tamil
The scriptures, Vedic method of self realization, Knower of the Vedas, One who knows all, Hindu philosophy or ultimate wisdom, King of all
Boy/Male
Tamil
Method, Way, Mode, Manner, One who crosses the river of life, Morning star
Male
Greek
(Μεθόδιος) Greek name derived from methodos, METHODIOS means "method."
Boy/Male
Tamil
The scriptures, Vedic method of self realization, Knower of the Vedas, One who knows all, Hindu philosophy or ultimate wisdom, King of all
Boy/Male
Indian
Method, Way, Mode, Manner, One who crosses the river of life, Morning star
Girl/Female
Tamil
Method, Wealth, Protection, Conduct, Auspiciousness, Memory, Well being
Boy/Male
Tamil
The scriptures, Vedic method of self realization, Knower of the Vedas, One who knows all, Hindu philosophy or ultimate wisdom, King of all
Boy/Male
Tamil
The scriptures, Vedic method of self realization, Knower of the Vedas, One who knows all, Hindu philosophy or ultimate wisdom, King of all
Surname or Lastname
Americanized form of German Albrecht.English
Americanized form of German Albrecht.English : from a medieval variant of the personal name Albert.Jacob Albright (1759–1808), a prominent Methodist preacher, was born in Pottstown, PA, the son of a German immigrant called Johann Albrecht.
Surname or Lastname
English (Devon)
English (Devon) : habitational name from a place so called in Hatherleigh, Devon.The Methodist Robert Strawbridge was born in Drummersnave (now Drumsna), near Carrick-on-Shannon, Co. Leitrim, Ireland. Some time between 1759 and 1766 he emigrated to MD and settled on Sam’s Creek, Frederick Co.
ELLIPSOID METHOD
ELLIPSOID METHOD
Boy/Male
Hindu, Indian
Energetic
Girl/Female
Muslim
Forenoon. Beautiful.
Girl/Female
Christian & English(British/American/Australian)
Light
Girl/Female
Muslim
Mastery, Fame, Pride (1)
Boy/Male
Scottish
Broken.
Boy/Male
Hindu, Indian
Ten Armed
Surname or Lastname
English
English : occupational name for someone who sewed for a living.
Female
Greek
(ΑἰκατεÏίνη) Greek name of uncertain etymology, but from an early date it has been associated with the Greek adjective katharos, AIKATERINE means "pure."Â
Boy/Male
Hindu, Indian, Marathi, Punjabi, Sikh
Happy; Joyful
Female
French
French form of German Hedwig, EDWIGE means "contending battle."
ELLIPSOID METHOD
ELLIPSOID METHOD
ELLIPSOID METHOD
ELLIPSOID METHOD
ELLIPSOID METHOD
n.
An ellipse.
adv.
By ellipsis of the verb, equivalent to an imperative: Go or come away; begone; take away.
v. t.
To take or hold (one's self); to proceed promptly; -- used reflexively, often with ellipsis of the pronoun; as, to have after one; to have at one or at a thing, i. e., to aim at one or at a thing; to attack; to have with a companion.
n.
The science of method or arrangement; a treatise on method.
a.
Alt. of Ellipsoidal
a.
Of or pertaining to methodology.
a.
Pertaining to, or shaped like, an ellipsoid; as, ellipsoid or ellipsoidal form.
superl.
Not many; small, limited, or confined in number; -- indicating a small portion of units or individuals constituing a whole; often, by ellipsis of a noun, a few people.
n.
One who methodizes.
n.
Omission; a figure of syntax, by which one or more words, which are obviously understood, are omitted; as, the virtues I admire, for, the virtues which I admire.
n.
A prolate spheroid; a figure described by the revolution of an ellipse about its greater axis. Cf. Oblatum, and see Ellipsoid of revolution, under Ellipsoid.
pl.
of Ellipsis
n.
A solid formed by the revolution of a conic section about its axis; as, a parabolic conoid, elliptic conoid, etc.; -- more commonly called paraboloid, ellipsoid, etc.
n.
A surface whose equation in three variables is of the second degree. Spheres, spheroids, ellipsoids, paraboloids, hyperboloids, also cones and cylinders with circular bases, are quadrics.
n.
A prolate spheroid. See Ellipsoid of revolution, under Ellipsoid.
n.
Omission. See Ellipsis.
v. t.
To understand or supply in an ellipsis.
n.
A solid, all plane sections of which are ellipses or circles. See Conoid, n., 2 (a).
v. t.
To reduce to method; to dispose in due order; to arrange in a convenient manner; as, to methodize one's work or thoughts.
n. pl.
A class of Coelenterata, commonly ellipsoidal in shape, swimming by means of eight longitudinal rows of paddles. The separate paddles somewhat resemble combs.