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List of unsolved problems may refer to several notable conjectures or open problems in various academic fields: Natural sciences, engineering and medicine [ edit ]
1000-Word Philosophy is an online philosophy anthology that publishes introductory 1000-word (or less) essays on philosophical topics. [1] The project was created in 2014 by Andrew D. Chapman , a philosophy lecturer at the University of Colorado, Boulder.
The problem to determine all positive integers such that the concatenation of and in base uses at most distinct characters for and fixed [citation needed] and many other problems in the coding theory are also the unsolved problems in mathematics.
These are lists of research topics, research problems and current research activities in various scientific areas. Pages in category "Lists of research topics" The following 3 pages are in this category, out of 3 total.
Wicked problem – Problem that is difficult or impossible to solve; World Community Grid – BOINC based volunteer computing project to aid scientific research; WorldRiskReport – Annual cooperation report on global disaster risks; World-systems theory – Approach emphasizing the world-system as the primary unit of social analysis
The problem for graphs is NP-complete if the edge lengths are assumed integers. The problem for points on the plane is NP-complete with the discretized Euclidean metric and rectilinear metric. The problem is known to be NP-hard with the (non-discretized) Euclidean metric. [3]: ND22, ND23
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This article is a list of notable unsolved problems in astronomy. Problems may be theoretical or experimental. Theoretical problems result from inability of current theories to explain observed phenomena or experimental results. Experimental problems result from inability to test or investigate a proposed theory.