Ambient Structures & Local Geometry¶
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Abstractions about ambient spaces, inclusions, local properties, fields, metrics, motions, combinatorial triples, and metric search structures.
9 abstractions in this family — domain-specific abstractions that sit near one another in structural-signature space (k-means over structural-signature embeddings). Each is shown with its short description.
- Ambient space (mathematics) — The surrounding mathematical space in which an object is embedded or considered, whose geometry and topology determine extrinsic relations not fixed by the object in isolation.
- BK-tree — Index objects in a discrete metric space by recursively grouping equal pivot distances, then use the triangle inequality to restrict a radius query to only child distances that can contain a match.
- Complete field — Equip a field with a compatible absolute value or metric and require every Cauchy sequence to converge within the field, making limits available without leaving its algebraic carrier.
- Convenient number — A preferred metric value selected from a human-friendly 5-2-1 sequence and powers of ten to simplify counting, product dimensions, communication, and conversion during U.S. metrication.
- Himetric — Represent physical length in device-independent units of one hundredth of a millimetre, especially for OLE object extents and Windows mapping between logical and device coordinates.
- Inclusion map — The canonical injective function from a subset or subobject into its containing object that sends every element to itself viewed in the larger context.
- Local property — A property that holds around each point or on sufficiently small neighborhoods, even if a corresponding global property may fail.
- Motion (geometry) — Transform a metric space by a surjective distance-preserving map, with Euclidean motions further classified by orientation, fixed-point structure, and decomposition into translations, rotations, reflections, and glide operations.
- Triple system — Equip a vector space with a trilinear product returning to that space, creating a generic ternary algebra whose added identities specialize it into Lie, Jordan, and geometry-bearing triple systems.