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  2. Borromean rings - Wikipedia

    en.wikipedia.org/wiki/Borromean_rings

    alternating, hyperbolic. In mathematics, the Borromean rings[ a ] are three simple closed curves in three-dimensional space that are topologically linked and cannot be separated from each other, but that break apart into two unknotted and unlinked loops when any one of the three is cut or removed. Most commonly, these rings are drawn as three ...

  3. Three utilities problem - Wikipedia

    en.wikipedia.org/wiki/Three_utilities_problem

    Two views of the utility graph, also known as the Thomsen graph or. The classical mathematical puzzle known as the three utilities problem or sometimes water, gas and electricity asks for non-crossing connections to be drawn between three houses and three utility companies in the plane. When posing it in the early 20th century, Henry Dudeney ...

  4. Tessellation - Wikipedia

    en.wikipedia.org/wiki/Tessellation

    A tessellationor tilingis the covering of a surface, often a plane, using one or more geometric shapes, called tiles, with no overlaps and no gaps. In mathematics, tessellation can be generalized to higher dimensionsand a variety of geometries. A periodic tilinghas a repeating pattern.

  5. Intersection curve - Wikipedia

    en.wikipedia.org/wiki/Intersection_curve

    Intersection curve. 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 in Euclidean 3-space is a line. In general, an intersection curve consists of the common points of two transversally intersecting surfaces, meaning that at any common point ...

  6. Fault (geology) - Wikipedia

    en.wikipedia.org/wiki/Fault_(geology)

    The two colorful ridges (at bottom left and top right) used to form a single continuous line, but have been pulled apart by movement along the milky way. In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements.

  7. Rendering (computer graphics) - Wikipedia

    en.wikipedia.org/wiki/Rendering_(computer_graphics)

    A variety of rendering techniques applied to a single 3D scene An image created by using POV-Ray 3.6. Rendering or image synthesis is the process of generating a photorealistic or non-photorealistic image from a 2D or 3D model by means of a computer program. [citation needed] The resulting image is referred to as a rendering.

  8. PNG - Wikipedia

    en.wikipedia.org/wiki/PNG

    A PNG file contains a single image in an extensible structure of chunks, encoding the basic pixels and other information such as textual comments and integrity checks documented in RFC 2083. [ 7 ] PNG files have the ".png" file extension and the "image/png" MIME media type. [ 8 ] PNG was published as an informational RFC 2083 in March 1997 and ...

  9. Transparency (graphic) - Wikipedia

    en.wikipedia.org/wiki/Transparency_(graphic)

    Transparency (graphic) GIF animation of an Apollonian sphere packing with transparent background. Transparency in computer graphics is possible in a number of file formats. The term "transparency" is used in various ways by different people, but at its simplest there is "full transparency" i.e. something that is completely invisible.