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  2. Settlement hierarchy - Wikipedia

    en.wikipedia.org/wiki/Settlement_hierarchy

    Village or Tribe – a village is a human settlement or community that is larger than a hamlet but smaller than a town. The population of a village varies; the average population can range in the hundreds. Anthropologists regard the number of about 150 members for tribes as the maximum for a functioning human group.

  3. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    The 1998 book Proofs from THE BOOK, inspired by Erdős, is a collection of particularly succinct and revelatory mathematical arguments. Some examples of particularly elegant results included are Euclid's proof that there are infinitely many prime numbers and the fast Fourier transform for harmonic analysis .

  4. Library - Wikipedia

    en.wikipedia.org/wiki/Library

    This is an accepted version of this page This is the latest accepted revision, reviewed on 6 January 2025. Organized collection of books or other information resources For other uses, see Library (disambiguation). Library patron retrieving a book from a shelf A library is a collection of books, and possibly other materials and media, that is accessible for use by its members and members of ...

  5. Professor Shonku - Wikipedia

    en.wikipedia.org/wiki/Professor_Shonku

    Professor Trilokeshwar Shonku (Bengali: প্রফেসর শঙ্কু) is a fictional scientist and inventor created by Satyajit Ray in a series of Bengali science fiction books of the same name published from 1965 on. He is the central protagonist of the series. Professor Shonku resides in Giridih

  6. Chemical formula - Wikipedia

    en.wikipedia.org/wiki/Chemical_formula

    A chemical formula used for a series of compounds that differ from each other by a constant unit is called a general formula. It generates a homologous series of chemical formulae. For example, alcohols may be represented by the formula C n H 2n + 1 OH (n ≥ 1), giving the homologs methanol, ethanol, propanol for 1 ≤ n ≤ 3.

  7. Nutrient - Wikipedia

    en.wikipedia.org/wiki/Nutrient

    A nutrient is a substance used by an organism to survive, grow and reproduce. The requirement for dietary nutrient intake applies to animals, plants, fungi and protists. ...

  8. Copenhagen interpretation - Wikipedia

    en.wikipedia.org/wiki/Copenhagen_interpretation

    The Copenhagen interpretation is a collection of views about the meaning of quantum mechanics, stemming from the work of Niels Bohr, Werner Heisenberg, Max Born, and others. [1]

  9. A Fórmula de Deus - Wikipedia

    en.wikipedia.org/wiki/A_Fórmula_de_Deus

    A Fórmula de Deus (God's Formula), in English The Einstein Enigma, is the fourth novel written by the Portuguese journalist and writer José Rodrigues dos Santos, published in 2006 in Portugal. It was the best-selling novel in Portugal in 2006, selling 100,000 copies.