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  2. Pushforward measure - Wikipedia

    en.wikipedia.org/wiki/Pushforward_measure

    In general, any measurable function can be pushed forward. The push-forward then becomes a linear operator, known as the transfer operator or Frobenius–Perron operator.In finite spaces this operator typically satisfies the requirements of the Frobenius–Perron theorem, and the maximal eigenvalue of the operator corresponds to the invariant measure.

  3. Yoke (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Yoke_(aeronautics)

    When the yoke is pushed forward, the nose is lowered. When the yoke is turned left, the plane rolls to the left, and when it is turned to the right, the plane rolls to the right. Small to medium-size aircraft, usually limited to propeller-driven, feature a mechanical system whereby the yoke is connected directly to the control surfaces with ...

  4. Echiurus echiurus - Wikipedia

    en.wikipedia.org/wiki/Echiurus_echiurus

    This spoon worm has a roughly cylindrical trunk between 70 and 110 mm (2.8 and 4.3 in) long. At the anterior end of the trunk, just beside the mouth, a scoop-shaped proboscis about 30 to 40 mm (1.2 to 1.6 in) long extends forward. The trunk has about 22 rings of papillae, a ring of larger papillae alternating with several rings of smaller papillae.

  5. Pushforward (differential) - Wikipedia

    en.wikipedia.org/wiki/Pushforward_(differential)

    Let : be a smooth map of smooth manifolds. Given , the differential of at is a linear map : from the tangent space of at to the tangent space of at (). The image of a tangent vector under is sometimes called the pushforward of by .

  6. Pushforward - Wikipedia

    en.wikipedia.org/wiki/Pushforward

    The notion of pushforward in mathematics is "dual" to the notion of pullback, and can mean a number of different but closely related things.. Pushforward (differential), the differential of a smooth map between manifolds, and the "pushforward" operations it defines

  7. Glossary of North American railway terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_North_American...

    Synonym for the verb "couple" used by brakemen when flat switching a yard. Talking on the radio, they will tell the engineer how many car lengths to back up in order to couple to another car (i.e. "five cars to a joint") [160] Joint bar (US) A metal plate that joins the ends of rails in jointed track Juice Train

  8. LeBron, Lindsey Vonn, Ronaldo keep going; Faster, stronger ...

    www.aol.com/lebron-lindsey-vonn-ronaldo-keep...

    FILE - Los Angeles Lakers forward LeBron James, right, moves the ball while defended by Golden State Warriors forward Gui Santos during the first half of an NBA basketball game Saturday, Jan. 25 ...

  9. Propulsion - Wikipedia

    en.wikipedia.org/wiki/Propulsion

    Armadillo Aerospace's quad rocket vehicle showing shock diamonds in the exhaust plume from its propulsion system. Propulsion is the generation of force by any combination of pushing or pulling to modify the translational motion of an object, which is typically a rigid body (or an articulated rigid body) but may also concern a fluid. [1]