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  2. Base (topology) - Wikipedia

    en.wikipedia.org/wiki/Base_(topology)

    The set Γ of all open intervals in forms a basis for the Euclidean topology on .. A non-empty family of subsets of a set X that is closed under finite intersections of two or more sets, which is called a π-system on X, is necessarily a base for a topology on X if and only if it covers X.

  3. 2024 Southport stabbing - Wikipedia

    en.wikipedia.org/wiki/2024_Southport_stabbing

    The Hart Space, where the attack occurred, is a community studio venue on Hart Street in Meols Cop, Southport, about a mile east of the town centre.It hosts yoga, dance, pregnancy, and baby and toddler classes.

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  5. Caja de Muertos Light - Wikipedia

    en.wikipedia.org/wiki/Caja_de_Muertos_Light

    The entrance to the tower, which has a 3.9 meter square base located in the center of the structure, is across the main entrance. On both sides of the tower base there were two 4.74m x 4.55m rooms one which served as the engineer's room and the other as a storeroom. North of the tower base the oil room was located. This one measures 3.6m x 1.5m.

  6. Base (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Base_(chemistry)

    In chemistry, there are three definitions in common use of the word "base": Arrhenius bases, Brønsted bases, and Lewis bases.All definitions agree that bases are substances that react with acids, as originally proposed by G.-F. Rouelle in the mid-18th century.

  7. Prism (optics) - Wikipedia

    en.wikipedia.org/wiki/Prism_(optics)

    Prism spectacles with a single prism perform a relative displacement of the two eyes, thereby correcting eso-, exo, hyper- or hypotropia. In contrast, spectacles with prisms of equal power for both eyes, called yoked prisms (also: conjugate prisms, ambient lenses or performance glasses) shift the visual field of both eyes to the same extent. [5]

  8. 3x3 basketball - Wikipedia

    en.wikipedia.org/wiki/3x3_basketball

    3x3 basketball (stylized as ƐX3, pronounced three-ex-three) [1] is a variation of basketball played three-a-side, with one backboard and in a half-court setup. This basketball game format is currently being promoted and structured by FIBA, the sport's governing body. [2]

  9. List of optometric abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_optometric...

    AC 3/4: Grade 3 anterior chamber angle: ... Prism dioptre D: Dioptres DC: Dioptres cylinder DNA: ... X/7 X days XP Exophoria: XT Exotropia: