• Thumbnail for Structure
    A structure is an arrangement and organization of interrelated elements in a material object or system, or the object or system so organized. Physical...
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  • In mathematics, a J-structure is an algebraic structure over a field related to a Jordan algebra. The concept was introduced by Springer (1973) to develop...
    10 KB (1,449 words) - 21:36, 6 July 2025
  • Thumbnail for Crystal structure
    crystallography, crystal structure is a description of the ordered arrangement of atoms, ions, or molecules in a crystalline material. Ordered structures occur from...
    46 KB (5,173 words) - 05:44, 7 July 2025
  • Thumbnail for Richat Structure
    The Richat Structure, or Guelb er Richât (Arabic: قلب الريشات, romanized: Qalb ar-Rīšāt, Hassaniyya: [galb er.riːʃaːt] ), often called the Eye of Africa...
    26 KB (2,711 words) - 09:49, 14 July 2025
  • Thumbnail for Data structure
    data structure is a data organization and storage format that is usually chosen for efficient access to data. More precisely, a data structure is a collection...
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  • In mathematical physics, the causal structure of a Lorentzian manifold describes the possible causal relationships between points in the manifold. Lorentzian...
    24 KB (3,608 words) - 12:25, 12 July 2025
  • Thumbnail for Perovskite (structure)
    A perovskite is a crystalline material of formula ABX3 with a crystal structure similar to that of the mineral perovskite, this latter consisting of calcium...
    38 KB (3,890 words) - 23:49, 30 June 2025
  • Story structure or narrative structure is the recognizable or comprehensible way in which a narrative's different elements are unified, including in a...
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  • Thumbnail for Hyperfine structure
    In atomic physics, hyperfine structure is defined by small shifts in otherwise degenerate electronic energy levels and the resulting splittings in those...
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  • Thumbnail for Social structure
    In the social sciences, social structure is the aggregate of patterned social arrangements in society that are both emergent from and determinant of the...
    21 KB (2,458 words) - 05:44, 24 June 2025
  • Thumbnail for Flower
    as blooms and blossoms, are the reproductive structures of flowering plants. Typically, they are structured in four circular levels around the end of a...
    81 KB (8,618 words) - 02:34, 14 July 2025
  • Thumbnail for Lewis structure
    Lewis structures – also called Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDs) – are diagrams...
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  • A structure editor, also structured editor or projectional editor, is any document editor that is cognizant of the document's underlying structure. Structure...
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  • Thumbnail for Fine structure
    In atomic physics, the fine structure describes the splitting of the spectral lines of atoms due to electron spin and relativistic corrections to the...
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  • Thumbnail for Structure constants
    ⋅ e j = c i j {\displaystyle \mathbf {e} _{i}\cdot \mathbf {e} _{j}=\mathbf {c} _{ij}} . The structure constants or structure coefficients c i j k {\displaystyle...
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  • An organizational structure defines how activities such as task allocation, coordination, and supervision are directed toward the achievement of organizational...
    48 KB (5,984 words) - 03:19, 27 May 2025
  • Thumbnail for Earth structure
    An earth structure is a building or other structure made largely from soil. Since soil is a widely available material, it has been used in construction...
    60 KB (7,688 words) - 01:45, 13 June 2025
  • Thumbnail for Observable universe
    1051/0004-6361/201323020. S2CID 24224684. Horvath, I.; Hakkila, J.; Bagoly, Z. (2013). "The largest structure of the Universe, defined by Gamma-Ray Bursts". arXiv:1311...
    66 KB (6,647 words) - 19:12, 8 July 2025
  • complex conjugate The structure factor is defined as this intensity normalized by 1 / ∑ j = 1 N f j 2 {\displaystyle 1/\sum _{j=1}^{N}f_{j}^{2}} If all the...
    42 KB (7,575 words) - 17:30, 25 May 2025
  • smaller actions Linn, Courtney J. (2010). "Redefining the Bank Secrecy Act: Currency Reporting and the Crime of Structuring". Santa Clara Law Review. 50...
    14 KB (1,278 words) - 08:00, 10 June 2025
  • The structure function, like the fragmentation function, is a probability density function in physics. It is somewhat analogous to the structure factor...
    2 KB (244 words) - 18:00, 24 July 2024
  • Quantitative structure–activity relationship models (QSAR models) are regression or classification models used in the chemical and biological sciences...
    46 KB (4,614 words) - 23:48, 14 July 2025
  • additional structure on X corresponds to remembering the inclusion j : U → X {\displaystyle j\colon U\to X} , which likens X with this extra structure to a...
    5 KB (772 words) - 17:02, 28 July 2023
  • Thumbnail for Chengdu J-20
    that the J-20s were being used in a professional manner and that he was "relatively impressed" with the Chinese command and control structure and AEW&C...
    183 KB (15,527 words) - 13:54, 11 July 2025
  • Thumbnail for Vredefort impact structure
    The Vredefort impact structure is one of the largest impact structures on Earth. The crater, which has since been eroded away, has been estimated at 170–300...
    18 KB (2,022 words) - 18:55, 17 June 2025
  • Thumbnail for Protein structure
    Protein structure is the three-dimensional arrangement of atoms in an amino acid-chain molecule. Proteins are polymers – specifically polypeptides – formed...
    38 KB (4,246 words) - 13:59, 17 January 2025
  • In mathematics, an algebraic structure or algebraic system consists of a nonempty set A (called the underlying set, carrier set or domain), a collection...
    21 KB (2,707 words) - 02:10, 7 June 2025
  • Thumbnail for Market structure
    Market structure, in economics, depicts how firms are differentiated and categorised based on the types of goods they sell (homogeneous/heterogeneous)...
    21 KB (2,650 words) - 13:47, 30 June 2025
  • An active structure (also known as a smart or adaptive structure) is a mechanical structure with the ability to alter its configuration, form or properties...
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  • Thumbnail for Chiastic structure
    Chiastic structure, or chiastic pattern, is a literary technique in narrative motifs and other textual passages. An example of chiastic structure would be...
    23 KB (2,089 words) - 08:16, 25 May 2025