general+or+abstract+notion
41Douglas Hofstadter — Douglas R. Hofstadter Hofstadter in Bologna, Italy, in March 2002 Born February 15, 1945 (1945 02 15) (age 66) New York, New York Occupation …
42building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
43North Australia Air War — North Australian Air War 1942–1943 Part of the Pacific Theater of World War II …
44Space music — Space music, also spelled spacemusic, is an umbrella term used to describe music that evokes a feeling of contemplative spaciousness. In fact, almost any music with a slow pace and space creating sound images could be called spacemusic. Stephen… …
45Limit (category theory) — In category theory, a branch of mathematics, the abstract notion of a limit captures the essential properties of universal constructions such as products and inverse limits. The dual notion of a colimit generalizes constructions such as disjoint… …
46infinity — /in fin i tee/, n., pl. infinities. 1. the quality or state of being infinite. 2. something that is infinite. 3. infinite space, time, or quantity. 4. an infinite extent, amount, or number. 5. an indefinitely great amount or number. 6. Math. a.… …
47Oregon — This article is about the U.S. state of Oregon. For other uses, see Oregon (disambiguation). State of Oregon …
48Market — For other uses, see Market (disambiguation). San Juan de Dios Market in Guadalajara, Jalisco …
49Reservation in India — Reservation in Indian law is a form of affirmative action whereby a percentage of seats are reserved in the public sector units, union and state civil services, union and state government departments and in all public and private educational… …
50Theoretical ecology — Mathematical models developed in theoretical ecology predict complex food webs are less stable than simple webs.[1]:75–77[2]:64 …
