neighborhood base
21Metric space — In mathematics, a metric space is a set where a notion of distance (called a metric) between elements of the set is defined. The metric space which most closely corresponds to our intuitive understanding of space is the 3 dimensional Euclidean… …
22Topological vector space — In mathematics, a topological vector space is one of the basic structures investigated in functional analysis. As the name suggests the space blends a topological structure (a uniform structure to be precise) with the algebraic concept of a… …
23Non-standard analysis — Abraham Robinson Gottfried Wilhelm Leibniz argued tha …
24Local ring — In abstract algebra, more particularly in ring theory, local rings are certain rings that are comparatively simple, and serve to describe what is called local behaviour , in the sense of functions defined on varieties or manifolds, or of… …
254th Street (Manhattan) — West 4th Street runs east west through most of eastern and central Manhattan and then turns north at 6th Avenue to intersect with West 10th, 11th, 12th, and 13th Streets in Greenwich Village. Most of the street has the same 40 foot (13 m) width… …
26List of suicide bombings in Iraq since 2003 — Suicide bombings in Iraq since 2003 have killed thousands of people, mostly Iraqi civilians, and arguably constitute a new phenomenon in the history of warfare. Suicide bombings have been used as a tactic in other armed struggles, but their… …
27Getafe — Spanish city native name = Getafe spanish name = Getafe nickname = city motto = city motto means = image flag size = 120px image coat of arms = Coat of arms of Getafe.svg image coat of arms size = 80px image city image city map size = 250px image …
28NEW YORK CITY — NEW YORK CITY, foremost city of the Western Hemisphere and largest urban Jewish community in history; pop. 7,771,730 (1970), est. Jewish pop. 1,836,000 (1968); metropolitan area 11,448,480 (1970), metropolitan area Jewish (1968), 2,381,000… …
29List of coalition military operations of the Iraq War — Operation Aloha redirects here. For the band, see Operation Aloha (band). Nordlicht redirects here. For the Kriegsmarine ship, see SS Nordlicht. Operation Falcon Freedom redirects here. For the United Nations Security Council Resolution 1973… …
30Neighborhoods of San Antonio — The city of San Antonio, Texas is composed of a number of neighborhoods, spreading out surrounding the central downtown area. Contents 1 Downtown 2 Alamo Heights 3 Midtown 4 Uptown Broadway Uptown Loop …
