concept
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concept:strong-centers

Strong Centers

The property that living structures contain centers that are not merely blobs but strong, field-like centers that organize the space around them; every strong center is made of many other strong centers recursively

Neighborhood — ranked by edge-count

Papers (1)

paper

Frameworks (4)

framework
  • Fifteen Properties of Living Structure
    associated_withimplements
    The set of geometric properties that appear in all living structure: levels of scale, strong centers, boundaries, echoes, gradients, deep interlock and ambiguity, local symmetries, roughness, inner calm, not separateness, and others.
  • Fifteen Transformations
    uses
    The system of fifteen specific transformation types, each corresponding to one of the fifteen properties, that together constitute all structure-preserving transformations.
  • Wholeness as Nested System of Centers
    implements
    Alexander's quasi-mathematical definition of wholeness as a recursively nested system of living centers displaying local symmetries, approximating the overall gestalt of a configuration
  • Middle-Range Order
    uses
    Coherent entities at the scale of rooms and bays — roughly halfway between building volume and smallest elements — whose existence and beautiful pattern of arrangement is essential for profound building order; first noted by Ingrid King

Communities (2)

community

Methods (1)

method
  • Subdivision Process
    implements
    The iterative process of cutting a whole into parts using asymmetry and thin boundary bands to introduce levels of scale and boundaries; a purely geometric process that creates more profound living form

Concepts (13)

concept
  • Strong Centers Transformation
    associated_withrelated_to
    A structure-preserving transformation: specifically the act of creating a focused, well-defined center to strengthen wholeness.
  • Centers
    extendssubtype_of
    Primary entities of wholeness that arise from configurations and are activated in space; they have different levels of strength or coherence and are intensified by relationships with other centers.
  • Levels of Scale
    associated_with
    The property that living structures contain centers at a beautiful range of sizes at well-marked levels with definite jumps, where each level helps the next; jumps should not be too great (ideally 2:1 to 4:1, less than 10:1)
  • Boundaries
    associated_with
    The property that living centers are formed and strengthened by boundaries which both separate and unite; the boundary must be of the same order of magnitude as the center being bounded and is itself made of centers
  • Structure-Preserving Transformations
    uses
    Chapter 2 of Volume 2 of The Nature of Order, introducing structure-preserving transformations as the mechanism by which living structure arises naturally through unfolding wholeness.
  • Living process
    uses
    A generative process that repeatedly applies the fundamental process to create uniqueness and belonging in the environment
  • Positive Space
    associated_with
    The property that every bit of space swells outward, is substantial in itself, and is never the leftover from an adjacent shape; every single part of space has positive shape as a center with no amorphous meaningless leftovers
  • Local Symmetries
    associated_with
    The property that living wholes contain many interlocking and overlapping local symmetries rather than overall symmetry; local symmetries act as glue holding space together, and their number predicts cognitive coherence
  • Alternating Repetition
    associated_with
    The property that living repetition is not simple repetition but alternation where a second system of centers repeats in parallel, creating counterpoint; what is really happening is oscillation, like waves
  • Building Volume
    associated_with
    The three-dimensional mass of the building, to be established as a primitive rectangle in response to the centers in public space.
  • Mosque of Kairouan
    associated_with
    Building used as a primary positive example of strong centers created by mutually reinforcing centers, progressive sequences, and field effects; also used for roughness in hand-drawn tiles
  • Centrifugal Force in River Meandering
    associated_with
    The mechanical explanation for river meander loops: centrifugal force erodes outer banks, creating STRONG CENTERS and GOOD SHAPE
  • Laws of Praegnanz
    extends
    Gestalt psychology's laws of coherence describing why some groupings are stronger; Alexander relates them to centers.

Chapters (3)

chapter
  • Chapter 5: Fifteen Fundamental Properties
    introduces
    The chapter that catalogs and analyzes the fifteen recurrent geometric properties found in systems that have life, connecting them to the deeper theory of centers and wholeness
  • Wholeness And The Theory Of Centers
    introduces
    The chapter that introduces the fundamental concepts of wholeness and centers, laying the groundwork for understanding life in buildings.
  • Always Making Centers
    mentions
    Chapter 10 of The Nature of Order, Vol 2, describing the process of creating living centers through differentiation and the fundamental process.

Related by similarity (8)

cosine ≥ 0.65 · no typed edge

Entities in the same semantic neighborhood but without a typed relation to this one — candidates for new edges or unrecognized duplicates.