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  2. Borromean rings - Wikipedia

    en.wikipedia.org/wiki/Borromean_rings

    Another argument for the impossibility of circular realizations, by Helge Tverberg, uses inversive geometry to transform any three circles so that one of them becomes a line, making it easier to argue that the other two circles do not link with it to form the Borromean rings. [27] However, the Borromean rings can be realized using ellipses. [2]

  3. Three circles model - Wikipedia

    en.wikipedia.org/wiki/Three_circles_model

    The three circles model - Raz 2002. The diagram presents a partial overlapping between the three circles. One must keep in mind, the relations among the circles are dynamic and their borders depend on the situation being studied. The model is not an area model and doesn't intend to describe certain numeric relations.

  4. Overlapping circles grid - Wikipedia

    en.wikipedia.org/wiki/Overlapping_circles_grid

    Expanding sets have 1, 7, 19, 37, 61, 91, 127, etc. circles, and continuing ever larger hexagonal rings of circles. The number of circles is n 3-(n-1) 3 = 3n 2-3n+1 = 3n(n-1)+1. These overlapping circles can also be seen as a projection of an n-unit cube of spheres in 3-dimensional space, viewed on the diagonal axis. There are more spheres than ...

  5. Venn diagram - Wikipedia

    en.wikipedia.org/wiki/Venn_diagram

    For instance, in a two-set Venn diagram, one circle may represent the group of all wooden objects, while the other circle may represent the set of all tables. The overlapping region, or intersection, would then represent the set of all wooden tables. Shapes other than circles can be employed as shown below by Venn's own higher set diagrams.

  6. Trefoil - Wikipedia

    en.wikipedia.org/wiki/Trefoil

    A trefoil (from Latin trifolium 'three-leaved plant') is a graphic form composed of the outline of three overlapping rings, used in architecture, Pagan and Christian symbolism, among other areas. The term is also applied to other symbols with a threefold shape. A similar shape with four rings is called a quatrefoil.

  7. Brain health, sleep, diet: 3 health resolutions for 2025

    www.aol.com/brain-health-sleep-diet-3-111100590.html

    In this podcast episode, Medical News Today shares three actionable resolutions that can help improve brain, heart, and metabolic health in the new year via diet, sleep, and exercise.

  8. Euler diagram - Wikipedia

    en.wikipedia.org/wiki/Euler_diagram

    In a logical setting, one can use model-theoretic semantics to interpret Euler diagrams, within a universe of discourse. In the examples below, the Euler diagram depicts that the sets Animal and Mineral are disjoint since the corresponding curves are disjoint, and also that the set Four Legs is a subset of the set of Animal s.

  9. Prince Andrew's Business Adviser Accused of Being 'Chinese ...

    www.aol.com/lifestyle/prince-andrews-business...

    Prince Andrew is at the center of more controversy.. The Duke of York, 64, who is King Charles' brother, reportedly had close business links with a Chinese national, who is alleged to be a spy ...