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Rio Tinto Group is a British-Australian multinational company that is the world's second largest metals and mining corporation (behind BHP). [3] It was founded in 1873 when a group of investors purchased a mine complex on the Rio Tinto, in Huelva, Spain, from the Spanish government.
List of unsolved problems may refer to several notable conjectures or open problems in various academic fields: Natural sciences, engineering and medicine
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InnoCentive is an open innovation and crowdsourcing company with its worldwide headquarters in Waltham, MA and their EMEA headquarters in London, UK.They enable organizations to put their unsolved problems and unmet needs, which are framed as ‘Challenges’, out to the crowd to address. [1]
Unfair prejudice in United Kingdom company law is a statutory form of action that may be brought by aggrieved shareholders against their company. Under the Companies Act 2006 the relevant provision is s 994, the identical successor to s 459 Companies Act 1985.
Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.
Protein folding problem: Is it possible to predict the secondary, tertiary and quaternary structure of a polypeptide sequence based solely on the sequence and environmental information? Inverse protein-folding problem: Is it possible to design a polypeptide sequence which will adopt a given structure under certain environmental conditions?
For functions in certain classes, the problem of determining: whether two functions are equal, known as the zero-equivalence problem (see Richardson's theorem); [5] the zeroes of a function; whether the indefinite integral of a function is also in the class. [6] Of course, some subclasses of these problems are decidable.