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  2. Stone's theorem on one-parameter unitary groups - Wikipedia

    en.wikipedia.org/wiki/Stone's_theorem_on_one...

    The operator is called the infinitesimal generator of (). Furthermore, A {\displaystyle A} will be a bounded operator if and only if the operator-valued mapping t ↦ U t {\displaystyle t\mapsto U_{t}} is norm -continuous.

  3. Wikipedia:WikiProject Maps - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:WikiProject_Maps

    Maps are useful in presenting key facts within a geographical context and enabling a descriptive overview of a complex concept to be accessed easily and quickly. WikiProject Maps encourages the creation of free maps and their upload on Wikimedia Commons. On the project's pages can be found advice, tools, links to resources, and map conventions.

  4. Self-adjoint operator - Wikipedia

    en.wikipedia.org/wiki/Self-adjoint_operator

    With suitable modifications, this result can be extended to possibly unbounded operators on infinite-dimensional spaces. Since an everywhere-defined self-adjoint operator is necessarily bounded, one needs to be more attentive to the domain issue in the unbounded case. This is explained below in more detail.

  5. Wikipedia : Creating shape maps from OpenStreetMap data

    en.wikipedia.org/wiki/Wikipedia:Creating_shape...

    Create a test map in your sandbox. You'll need to use {} together with the Wikidata ID of the shape. As an example: {{maplink|frame=yes|type=shape|id=Q160236}} If it displays, great. You can use the map and add parameters to make it display to your liking. If the map data does not populate, the below methods are straight-forward and reliable:

  6. Voronoi diagram - Wikipedia

    en.wikipedia.org/wiki/Voronoi_diagram

    Let be a metric space with distance function .Let be a set of indices and let () be a tuple (indexed collection) of nonempty subsets (the sites) in the space .The Voronoi cell, or Voronoi region, , associated with the site is the set of all points in whose distance to is not greater than their distance to the other sites , where is any index different from .

  7. Unbounded operator - Wikipedia

    en.wikipedia.org/wiki/Unbounded_operator

    An unbounded operator (or simply operator) T : D(T) → Y is a linear map T from a linear subspace D(T) ⊆ X —the domain of T —to the space Y. [5] Contrary to the usual convention, T may not be defined on the whole space X. An operator T is said to be closed if its graph Γ(T) is a closed set. [6]

  8. Unitary operator - Wikipedia

    en.wikipedia.org/wiki/Unitary_operator

    Definition 1. A unitary operator is a bounded linear operator U : H → H on a Hilbert space H that satisfies U*U = UU* = I, where U* is the adjoint of U, and I : H → H is the identity operator.

  9. List of online map services - Wikipedia

    en.wikipedia.org/wiki/List_of_online_map_services

    T Map by SK Telecom; One Navi by KT corporation; Spain. Spanish official cartography website, including National Topographic Maps MTN50 (1:50,000 scale) and MTN25 (1:25,000 scale). SITPA-IDEAS, Asturias regional maps. Sweden. Eniro.se, also covers Denmark, Finland and Norway; Hitta.se; Thailand "Longdo Map", by Longdo.