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  2. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    This fitting (also known as a "bungalow fitting" or a "cottage fitting") is a sanitary tee that allows two trap arms to be connected at the same level. A toilet is the main connection, with the option of a right or left-hand outlet to the 3" inlet with a choice of 1-1/2" or 2" in size.

  3. Replica trick - Wikipedia

    en.wikipedia.org/wiki/Replica_trick

    In the case of a spin glass, we expect the free energy per spin (or any self averaging quantity) in the thermodynamic limit to be independent of the particular values of ferromagnetic and antiferromagnetic couplings between individual sites, across the lattice. So, we explicitly find the free energy as a function of the disorder parameter (in ...

  4. International Mathematical Olympiad - Wikipedia

    en.wikipedia.org/wiki/International_Mathematical...

    July 1–13 United States [31] 20 Bucharest: 1978: July 3–10 Romania [31] 21 London: 1979: June 30 – July 9 Soviet Union [31] The 1980 IMO was due to be held in Mongolia. It was cancelled, and split into two unofficial events in Europe. [32] 22 Washington, D.C. 1981: July 8–20 United States [31] 23 Budapest: 1982: July 5–14 West Germany ...

  5. Bootstrapping (statistics) - Wikipedia

    en.wikipedia.org/wiki/Bootstrapping_(statistics)

    An example of the first resample might look like this X 1 * = x 2, x 1, x 10, x 10, x 3, x 4, x 6, x 7, x 1, x 9. There are some duplicates since a bootstrap resample comes from sampling with replacement from the data. Also the number of data points in a bootstrap resample is equal to the number of data points in our original observations.

  6. Engineering fit - Wikipedia

    en.wikipedia.org/wiki/Engineering_fit

    Engineering fits are generally used as part of geometric dimensioning and tolerancing when a part or assembly is designed. In engineering terms, the "fit" is the clearance between two mating parts, and the size of this clearance determines whether the parts can, at one end of the spectrum, move or rotate independently from each other or, at the other end, are temporarily or permanently joined.