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  2. Portal:Erotica and pornography - Wikipedia

    en.wikipedia.org/wiki/Portal:Erotica_and_pornography

    On the set of a pornographic film. Pornography has existed since the origins of the United States, and has become more readily accessible in the 21st century.Advanced by technological development, it has gone from a hard-to-find "back alley" item, beginning in 1969 with Blue Movie by Andy Warhol, the Golden Age of Porn (1969–1984) and home video, to being more available in the country and ...

  3. Switzerland - Wikipedia

    en.wikipedia.org/wiki/Switzerland

    Switzerland has a stable, prosperous and high-tech economy. It is the world's wealthiest country per capita in multiple rankings. The country ranks as one of the least corrupt countries in the world, [124] [125] [126] while its banking sector is rated as "one of the most corrupt in the world". [127]

  4. Logarithmically concave function - Wikipedia

    en.wikipedia.org/wiki/Logarithmically_concave...

    Logarithmically concave function. In convex analysis, a non-negative function f : Rn → R+ is logarithmically concave (or log-concave for short) if its domain is a convex set, and if it satisfies the inequality. for all x,y ∈ dom f and 0 < θ < 1. If f is strictly positive, this is equivalent to saying that the logarithm of the function, log ...

  5. SkyMiles - Wikipedia

    en.wikipedia.org/wiki/SkyMiles

    SkyMiles is the frequent-flyer program of Delta Air Lines that offers points (or "miles") to passengers traveling on most fare types, as well as to consumers who utilize Delta co-branded credit cards, which accumulate towards free awards such as airline tickets, business and first-class upgrades, and luxury products. [1]

  6. Delta Electricity - Wikipedia

    en.wikipedia.org/wiki/Delta_Electricity

    Delta Electricity is an electricity generation company in Australia. The company was formed by the Government of New South Wales in 1996 as part of its reform of the electricity sector in the State, which saw the breakup of the Electricity Commission of New South Wales. Delta Electricity, which at the time owned only the Vales Point Power ...

  7. Nile Delta - Wikipedia

    en.wikipedia.org/wiki/Nile_Delta

    The Nile Delta at night as seen from the ISS in October 2010. The Nile Delta ( Arabic: دلتا النيل, Delta an-Nīl or simply الدلتا, ad-Delta) is the delta formed in Lower Egypt where the Nile River spreads out and drains into the Mediterranean Sea. [1] It is one of the world's larger deltas—from Alexandria in the west to Port ...

  8. Logarithmic derivative - Wikipedia

    en.wikipedia.org/wiki/Logarithmic_derivative

    Calculus. In mathematics, specifically in calculus and complex analysis, the logarithmic derivative of a function f is defined by the formula. where is the derivative of f. [1] Intuitively, this is the infinitesimal relative change in f; that is, the infinitesimal absolute change in f, namely scaled by the current value of f.

  9. Pep Guardiola - Wikipedia

    en.wikipedia.org/wiki/Pep_Guardiola

    Pep Guardiola. Josep " Pep " Guardiola Sala ( Catalan pronunciation: [ˈpɛb ɡwəɾðiˈɔlə]; [3] [4] [5] born 18 January 1971) is a Catalan professional football manager and former player from Spain, who is currently the manager of Premier League club Manchester City. [6] Guardiola is the only manager to win the continental treble twice ...