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  2. Bell triangle - Wikipedia

    en.wikipedia.org/wiki/Bell_triangle

    In mathematics, the Bell triangle is a triangle of numbers analogous to Pascal's triangle, whose values count partitions of a set in which a given element is the largest singleton. It is named for its close connection to the Bell numbers , [ 1 ] which may be found on both sides of the triangle, and which are in turn named after Eric Temple Bell .

  3. Bell number - Wikipedia

    en.wikipedia.org/wiki/Bell_number

    The Bell numbers can easily be calculated by creating the so-called Bell triangle, also called Aitken's array or the Peirce triangle after Alexander Aitken and Charles Sanders Peirce. [ 6 ] Start with the number one.

  4. Glossary of shapes with metaphorical names - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_shapes_with...

    A number of notable buildings have an E-shaped floorplan; F-shape, the shape that resembles the capital letter F; Figure 0, the shape that resembles the numeral 0; Figure 1, the shape that resembles the numeral 1; Figure 2, the shape that resembles the numeral 2; Figure 3, the shape that resembles the numeral 3; Figure 4, the shape that ...

  5. Geometric Shapes (Unicode block) - Wikipedia

    en.wikipedia.org/wiki/Geometric_Shapes_(Unicode...

    Among the fonts in widespread use, [6] [7] full implementation is provided by Segoe UI Symbol and significant partial implementation of this range is provided by Arial Unicode MS and Lucida Sans Unicode, which include coverage for 83% (80 out of 96) and 82% (79 out of 96) of the symbols, respectively.

  6. List of lucky symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_lucky_symbols

    See Numbers in Chinese culture#Eight. Used to mean the sacred and infinite in Japanese. A prime example is using the number 8 to refer to Countless/Infinite Gods (八百万の神, Yaoyorozu no Kami) (lit. Eight Million Gods). See 8#As a lucky number. Aitvaras: Lithuania [5] Acorns: Norse [6] Albatross: Considered a sign of good luck if seen by ...

  7. File:Bell System hires 1889 logo.PNG - Wikipedia

    en.wikipedia.org/wiki/File:Bell_System_hires...

    Date/Time Thumbnail Dimensions User Comment; current: 07:29, 29 December 2011: 1,305 × 1,362 (30 KB): SreeBot (Original text) : Re-upload, images did not refresh on previous upload.

  8. Figurate number - Wikipedia

    en.wikipedia.org/wiki/Figurate_number

    a number represented as a discrete r-dimensional regular geometric pattern of r-dimensional balls such as a polygonal number (for r = 2) or a polyhedral number (for r = 3). a member of the subset of the sets above containing only triangular numbers, pyramidal numbers , and their analogs in other dimensions.

  9. List of sail emblems - Wikipedia

    en.wikipedia.org/wiki/List_of_sail_emblems

    Boat Type Class Marking Marking description Mirror: Red Italic Capital letter M on a crescent section of a circle Redwing: 18. White Number on a dark red sail