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Geometry of Hyperbolas01:30

Geometry of Hyperbolas

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A hyperbola consists of all points where the absolute difference of distances to two fixed points, called foci, remains constant. The standard equation isEach branch extends infinitely and approaches two asymptotes, which guide the curve’s behavior. The parameters a and b define key features: a measures the distance from the center to each vertex along the transverse axis, while b influences the slopes of the asymptotes. The asymptotes have equationsA rectangle centered at the origin with...
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Hyperbolas01:30

Hyperbolas

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A hyperbola is a conic section produced when a double-napped cone is intersected by a plane at an angle steeper than the slope of the cone, such that it cuts through both nappes. This intersection yields two separate, mirror-image curves known as branches, which open away from each other along the transverse axis. The nearest points on each branch to the hyperbola’s center are termed vertices, and the distance from the center to a vertex is denoted by a. Perpendicular to the transverse...
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Graphs of Polar Equations01:17

Graphs of Polar Equations

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The polar coordinate system represents points using a distance from a central point (the pole) and an angle from a reference direction (the polar axis). Unlike rectangular coordinates, polar coordinates are ideal for graphing curves with radial symmetry or periodic behavior.Some general forms of graphs in polar coordinates include the following:Equation of a Circle (Centered at the Pole):A graph where the radius remains constant for all angles traces a circle centered at the pole:Equation of a...
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Gauss's Law: Planar Symmetry01:27

Gauss's Law: Planar Symmetry

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A planar symmetry of charge density is obtained when charges are uniformly spread over a large flat surface. In planar symmetry, all points in a plane parallel to the plane of charge are identical with respect to the charges. Suppose the plane of the charge distribution is the xy-plane, and the electric field at a space point P with coordinates (x, y, z) is to be determined. Since the charge density is the same at all (x, y) - coordinates in the z = 0 plane, by symmetry, the electric field at P...
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Graphs of Functions01:30

Graphs of Functions

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Graphs of functions provide a visual representation of how output values change in response to varying inputs. Each point on the graph corresponds to an ordered pair, where the x-coordinate (independent variable) determines the horizontal position and the y-coordinate (dependent variable) determines the vertical position. Linear functions like y = x give a straight line, indicating a constant rate of change.Nonlinear functions display more complex behaviors. Even power functions generate...
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Graphs of Equations in Two Variables01:30

Graphs of Equations in Two Variables

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An equation with two variables, typically written in the form y = f(x) or Ax + By = C, describes a relationship between quantities represented by x and y. Each solution to such an equation is an ordered pair (x, y) that satisfies the equation when substituted. These pairs can be represented graphically to understand the variables' relationship visually.A common technique for constructing the graph of a two-variable equation is to create a value table. Begin by choosing several values for the...
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Updated: Jan 8, 2026

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
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Gráficos hiperbólicos aleatorios con estructuras de mesoescala arbitrarias

Stefano Guarino1, Enrico Mastrostefano1, Davide Torre2

  • 1Istituto per le Applicazioni del Calcolo "Mauro Picone" (CNR-IAC), Via dei Taurini 19, Rome 00185, Italy.

Physical review. E
|December 23, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Introducimos el modelo de bloques hiperbólicos aleatorios (RHBM) para capturar mejor las estructuras comunitarias en redes del mundo real. Este modelo extiende los gráficos hiperbólicos aleatorios al incorporar estructuras de bloques, superando las limitaciones de los enfoques puramente geométricos.

Palabras clave:
redes complejasmodelado de redesestructuras comunitariasgráficos hiperbólicos aleatoriosciencia de redes

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Área de la Ciencia:

  • Ciencia de Redes
  • Sistemas Complejos
  • Teoría de Grafos

Sus antecedentes:

  • Las redes del mundo real exhiben propiedades universales como escasez, small-worldness y estructuras comunitarias.
  • Los modelos de redes geométricas, como los gráficos hiperbólicos aleatorios (RHG), capturan muchas características de la red al incrustar nodos en un espacio de similitud latente.
  • Sin embargo, los modelos puramente geométricos tienen dificultades para representar estructuras comunitarias no geométricas donde la disimilitud entre grupos viola la desigualdad triangular.

Objetivo del estudio:

  • Abordar las limitaciones de los modelos de redes geométricas existentes para capturar estructuras comunitarias de mesoescala.
  • Introducir un modelo de red novedoso que incorpore estructuras de bloques y al mismo tiempo conserve la geometría latente.
  • Mejorar la capacidad de los modelos de red para representar diversas topologías de redes del mundo real.

Principales métodos:

  • Introducción del modelo de bloques hiperbólicos aleatorios (RHBM), que extiende los RHG con estructuras de bloques.
  • Utilización de un marco de máxima entropía para incorporar estructuras comunitarias en el modelo.
  • Análisis de redes sintéticas para demostrar las capacidades del RHBM.

Principales resultados:

  • El RHBM preserva eficazmente las estructuras comunitarias, superando a los modelos puramente geométricos en este aspecto.
  • El modelo demuestra flexibilidad en la generación de redes con patrones de mezcla comunitarios específicos.
  • Los análisis de redes sintéticas validan las ventajas del RHBM para capturar características comunitarias no geométricas.

Conclusiones:

  • El modelo de bloques hiperbólicos aleatorios (RHBM) ofrece un avance significativo en el modelado de redes complejas con estructuras comunitarias.
  • El RHBM resalta la importancia de la geometría latente al tiempo que aborda sus limitaciones en el control de la organización de mesoescala.
  • Este modelo proporciona una representación más precisa de las redes del mundo real caracterizadas por propiedades tanto geométricas como de bloques.