Still Unsolved Problems

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• Unsolved problems in mathematics — This article lists some unsolved problems in mathematics. See individual articles for details and sources. Millennium Prize Problems Of the seven Millennium Prize Problems set by the Clay Mathematics Institute, the six ones yet to be solved are:… …   Wikipedia

• Unsolved problems in philosophy — This article deals mainly with unsolved problems in analytic philosophy. For other schools of philosophy, this concept is not well defined. Philosophical problems are unlike scientific or mathematical problems in that problems in philosophy are… …   Wikipedia

• Unsolved problems in statistics — There are many longstanding unsolved problems in mathematics for which a solution has still not yet been found. The unsolved problems in statistics are generally of a different flavor; according to John Tukey, difficulties in identifying problems …   Wikipedia

• Unsolved problems in physics — This is a list of some of the major unsolved problems in physics. Some of these problems are theoretical, meaning that existing theories seem incapable of explaining some observed phenomenon or experimental result. The others are experimental,… …   Wikipedia

• List of unsolved problems in mathematics — This article lists some unsolved problems in mathematics. See individual articles for details and sources. Contents 1 Millennium Prize Problems 2 Other still unsolved problems 2.1 Additive number theory …   Wikipedia

• List of unsolved problems in economics — This is a list of some of the major unsolved problems, puzzles, or questions in economics. Some of these are theoretical in origin and some of them concern the inability of standard economic theory to explain an empirical observation. Contents 1… …   Wikipedia

• Millennium Prize Problems — This article is about the math prizes. For the technology prize, see Millennium Technology Prize. Millennium Prize Problems P versus NP problem Hodge conjecture …   Wikipedia

• Hilbert's problems — are a list of twenty three problems in mathematics put forth by German mathematician David Hilbert at the Paris conference of the International Congress of Mathematicians in 1900. The problems were all unsolved at the time, and several of them… …   Wikipedia

• The Thirteen Problems — infobox Book | name = The Thirteen Problems title orig = translator = image caption = Dust jacket illustration of the first UK edition author = Agatha Christie cover artist = Not known country = United Kingdom language = English series = genre =… …   Wikipedia

• SUP — Superior (Academic & Science » Universities) Super (Governmental » Transportation) **** Superior (Medical » Physiology) **** Superior (Regional) **** Superior (Community » Educational) ** SUPremum (Academic & Science » Mathematics) * Suppository… …   Abbreviations dictionary

• Refactorable number — A refactorable number or tau number is an integer n that is divisible by the count of its divisors, or to put it algebraically, n is such that au(n)|n. The first few refactorable numbers are listed in OEIS|id=A033950 1, 2, 8, 9, 12, 18, 24, 36,… …   Wikipedia