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Что (кто) такое boundary condition - определение
CLASS OF PROBLEMS IN PDES
Impedance boundary condition; Impedance Boundary Condition; Robin boundary conditions; Third type boundary condition; Impedance boundary conditions; Insulating boundary condition
Найдено результатов: 919
Robin boundary condition
In mathematics, the Robin boundary condition (; properly ), or third type boundary condition, is a type of boundary condition, named after Victor Gustave Robin (1855–1897).Gustafson, K.
Dirichlet boundary condition
TYPE OF CONSTRAINT ON SOLUTIONS TO DIFFERENTIAL EQUATIONS
Dirichlet boundary conditions; Dirichlet BC; Dirichlet condition; Dirichlet data; First-type boundary condition; Fixed boundary condition
In the mathematical study of differential equations, the Dirichlet (or first-type) boundary condition is a type of boundary condition, named after Peter Gustav Lejeune Dirichlet (1805–1859). When imposed on an ordinary or a partial differential equation, it specifies the values that a solution needs to take along the boundary of the domain.
Neumann boundary condition
Neumann problem; Neumann Problems; Neumann Problem; Neumann boundary conditions; Neumann BC; Von Neumann condition; Second-type boundary condition; Flux boundary condition; Neumann condition
In mathematics, the Neumann (or second-type) boundary condition is a type of boundary condition, named after Carl Neumann.
Cauchy boundary condition
Cauchy boundary conditions; Cauchy boundary condititions; Cauchy condition; Cauchy initial value problem; Cauchy boundary; Cauchy data; Cauchy boundaries
In mathematics, a Cauchy () boundary condition augments an ordinary differential equation or a partial differential equation with conditions that the solution must satisfy on the boundary; ideally so as to ensure that a unique solution exists. A Cauchy boundary condition specifies both the function value and normal derivative on the boundary of the domain.
Mixed boundary condition
MATHEMATICAL PROBLEM
Mixed boundary conditions
In mathematics, a mixed boundary condition for a partial differential equation defines a boundary value problem in which the solution of the given equation is required to satisfy different boundary conditions on disjoint parts of the boundary of the domain where the condition is stated. Precisely, in a mixed boundary value problem, the solution is required to satisfy a Dirichlet or a Neumann boundary condition in a mutually exclusive way on disjoint parts of the boundary.
Free boundary condition
Free boundary conditions
In image processing, the free boundary condition is the convention used when applying a convolution kernel to a digital image in which pixel locations that lie outside the image boundaries are interpreted as having a value of zero.The question of what value to assign out-of-bounds pixels may arise, for instance, when applying a 3×3 kernel to the corner pixel in an image.
Boundary (topology)
![Boundary of hyperbolic components of [[Mandelbrot set]]](https://commons.wikimedia.org/wiki/Special:FilePath/Mandelbrot Components.svg?width=200 "Boundary of hyperbolic components of [[Mandelbrot set]]")
DIVIDING LINE BETWEEN TWO AREAS OR SETS OF POINTS IN A TOPOLOGICAL SPACE; DIFFERENCE BETWEEN THE CLOSURE AND THE INTERIOR
Boundary point; Boundary points; Frontier (mathematics); Boundary component; Boundary set; Frontier (topology); Boundary (algebraic topology); Boundary of a set; Boundary Functions; Boundary (mathematics); Topological boundary; Boundary (geometry)
In topology and mathematics in general, the boundary of a subset of a topological space is the set of points in the closure of not belonging to the interior of . An element of the boundary of is called a boundary point of .
K/T boundary
![Luis]] (left) and his son [[Walter Alvarez]] (right) at the K-T Boundary in [[Gubbio]], Italy, 1981](https://commons.wikimedia.org/wiki/Special:FilePath/LWA with Walt.JPG?width=200 "Luis]] (left) and his son [[Walter Alvarez]] (right) at the K-T Boundary in [[Gubbio]], Italy, 1981")
GEOLOGICAL SIGNATURE, USUALLY A THIN BAND OF ROCK, MARKING THE TRANSITION FROM THE END OF THE CRETACEOUS PERIOD AND THE BEGINNING OF THE PALEOGENE PERIOD, DATED WITH RADIOMETRIC METHODS, AT THE AGE OF 66.043 ± 0.011 MA
K-T boundary; K-T layer; KT boundary; KT Boundary; Kt boundary; C-T boundary; K/T impact; K-T impact; Cretaceous-Paleogene boundary; K-t boundary; K-T Boundary; K–T boundary extinction mechanisms; K–Pg boundary; K-Pg boundary; K-T boundary extinction mechanisms; K/T boundary; K-T Line; K–T boundary; Cretaceous–Tertiary boundary; Cretaceous-Tertiary boundary
¦ noun Geology the boundary between the Cretaceous and Tertiary periods, about 65 million years ago, marked by the extinction of dinosaurs and many other groups of animals.
Origin
from symbols for Cretaceous and Tertiary.
Boundary marker
![A [[slate]] boundary stone on [[Maesglase]]](https://commons.wikimedia.org/wiki/Special:FilePath/Boundary stone Maesglase.jpg?width=200 "A [[slate]] boundary stone on [[Maesglase]]")
![Historical boundary stone between the [[Principality of Lippe]] and the [[Kingdom of Prussia]].](https://commons.wikimedia.org/wiki/Special:FilePath/D-NW-Bad Salzuflen-Wüsten - Grenzstein (klein) in Pehlen.jpg?width=200 "Historical boundary stone between the [[Principality of Lippe]] and the [[Kingdom of Prussia]].")
![German troops at the Soviet state border marker during [[Operation Barbarossa]], 1941](https://commons.wikimedia.org/wiki/Special:FilePath/German troops crossing the Soviet border.jpg?width=200 "German troops at the Soviet state border marker during [[Operation Barbarossa]], 1941")
![Border stone from 1763 between [[Norway]] and [[Sweden]], located in the [[Arctic]]](https://commons.wikimedia.org/wiki/Special:FilePath/BorderPost272 - Norway and Sweden.jpg?width=200 "Border stone from 1763 between [[Norway]] and [[Sweden]], located in the [[Arctic]]")
![Boundary stone of the original District of Columbia]] set in 1792 marking the boundary between [[Washington, D.C.]], and [[Maryland]] in the [[United States]].](https://commons.wikimedia.org/wiki/Special:FilePath/Boundary Stone (District of Columbia) NE 2.jpg?width=200 "Boundary stone of the original District of Columbia]] set in 1792 marking the boundary between [[Washington, D.C.]], and [[Maryland]] in the [[United States]].")
![Border stone in France between the communes of [[Nages]], [[Murat-sur-Vèbre]] and [[Fraisse-sur-Agout]]](https://commons.wikimedia.org/wiki/Special:FilePath/Nages Peyre sus autre.JPG?width=200 "Border stone in France between the communes of [[Nages]], [[Murat-sur-Vèbre]] and [[Fraisse-sur-Agout]]")
![Hanoverian]] state forest and the woods held in common by local villages. The border was marked in 1750 by order of [[George II of Great Britain]] who was also [[Elector of Hanover]] at that time.](https://commons.wikimedia.org/wiki/Special:FilePath/Moisburger Stein.JPG?width=200 "Hanoverian]] state forest and the woods held in common by local villages. The border was marked in 1750 by order of [[George II of Great Britain]] who was also [[Elector of Hanover]] at that time.")
![A boundary marker in [[Obdam]], the Netherlands. It marks the boundary between Obdam and [[Hensbroek]].](https://commons.wikimedia.org/wiki/Special:FilePath/Grenspaal Obdam en Hensbroek 3.JPG?width=200 "A boundary marker in [[Obdam]], the Netherlands. It marks the boundary between Obdam and [[Hensbroek]].")
![Boundary marker (also banishing pole) in [[Schardam]], the Netherlands, showing the [[coat of arms of Hoorn]].](https://commons.wikimedia.org/wiki/Special:FilePath/Banpaal met eenhoorn uit 1761.jpg?width=200 "Boundary marker (also banishing pole) in [[Schardam]], the Netherlands, showing the [[coat of arms of Hoorn]].")
![Border stone in [[Mount Nuang]] hiking track. Marks the boundary between [[Selangor]] and [[Pahang]], [[Malaysia]].](https://commons.wikimedia.org/wiki/Special:FilePath/Pahang-Selangor Border Stone.jpg?width=200 "Border stone in [[Mount Nuang]] hiking track. Marks the boundary between [[Selangor]] and [[Pahang]], [[Malaysia]].")
![Modern boundary marker on the [[49th parallel north]] designating the border between the [[United States]] and [[Canada]].](https://commons.wikimedia.org/wiki/Special:FilePath/Modern Boundary Marker Point Roberts.JPG?width=200 "Modern boundary marker on the [[49th parallel north]] designating the border between the [[United States]] and [[Canada]].")
![Typical border marker of [[Ukraine]].](https://commons.wikimedia.org/wiki/Special:FilePath/State Border of Ukraine.png?width=200 "Typical border marker of [[Ukraine]].")
![[[Finland–Russia border]] markers: a white marker for the actual border, "guarded" by striped bollards, marked with a coat of arms, maintained by each state.](https://commons.wikimedia.org/wiki/Special:FilePath/Easternmost finland.jpg?width=200 "[[Finland–Russia border]] markers: a white marker for the actual border, \"guarded\" by striped bollards, marked with a coat of arms, maintained by each state.")
![Lilford-cum-Wigsthorpe]].](https://commons.wikimedia.org/wiki/Special:FilePath/Parish Boundary Tree - geograph.org.uk - 111615.jpg?width=200 "Lilford-cum-Wigsthorpe]].")
![The border between [[Baarle-Hertog]] ([[Belgium]]) and [[Baarle-Nassau]] ([[Netherlands]]) is on this place marked on the ground.](https://commons.wikimedia.org/wiki/Special:FilePath/Baarle-Nassau frontière café.jpg?width=200 "The border between [[Baarle-Hertog]] ([[Belgium]]) and [[Baarle-Nassau]] ([[Netherlands]]) is on this place marked on the ground.")
![[[Milestone]] in France, doubling as a border marker between ''départements''](https://commons.wikimedia.org/wiki/Special:FilePath/Le Boisle FR-80 & Labroye-FR-62-limite départementale-01.jpg?width=200 "[[Milestone]] in France, doubling as a border marker between ''départements''")
![City boundary marker between [[Sumedang Regency]] and [[Bandung Regency]], located in [[Indonesia]]. Photo was taken from Sumedang side.](https://commons.wikimedia.org/wiki/Special:FilePath/KabSmd-KabBdg-Marker.jpg?width=200 "City boundary marker between [[Sumedang Regency]] and [[Bandung Regency]], located in [[Indonesia]]. Photo was taken from Sumedang side.")
![government]] regulation changes in 1987. Photo was taken from Bandung side.](https://commons.wikimedia.org/wiki/Special:FilePath/BoundaryMarker BdgCimahi.jpg?width=200 "government]] regulation changes in 1987. Photo was taken from Bandung side.")
![Finnish border marker in the immigration hall of [[Helsinki-Vantaa Airport]]. Notable for its castors and thus a somewhat unique ''mobile'' boundary marker.](https://commons.wikimedia.org/wiki/Special:FilePath/Helsinki-Vantaa Airport Finnish border boundary marker.jpg?width=200 "Finnish border marker in the immigration hall of [[Helsinki-Vantaa Airport]]. Notable for its castors and thus a somewhat unique ''mobile'' boundary marker.")
PHYSICAL INDICATION OF A BOUNDARY
Boundary stone; Border stone; Border marker; Frontier mark; Border monument; Boundary stones; Horos; Boundary markers; Boundary pillar
A boundary marker, border marker, boundary stone, or border stone is a robust physical marker that identifies the start of a land boundary or the change in a boundary, especially a change in direction of a boundary. There are several other types of named border markers, known as boundary trees, pillars, monuments, obelisks, and corners.
Haybittle–Peto boundary
Haybittle-Peto boundary
The Haybittle–Peto boundary is a rule for deciding when to stop a clinical trial prematurely. It is named for John Haybittle and Richard Peto.
Википедия
Robin boundary condition
In mathematics, the Robin boundary condition (; properly French: [ʁɔbɛ̃]), or third type boundary condition, is a type of boundary condition, named after Victor Gustave Robin (1855–1897). When imposed on an ordinary or a partial differential equation, it is a specification of a linear combination of the values of a function and the values of its derivative on the boundary of the domain. Other equivalent names in use are Fourier-type condition and radiation condition.
