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Three quivers. A quiver is a container for holding arrows or bolts. It can be carried on an archer's body, the bow, or the ground, depending on the type of shooting and the archer's personal preference. Quivers were traditionally made of leather, wood, furs, and other natural materials, but are now often made of metal or plastic.
In theoretical physics, a quiver diagram is a graph representing the matter content of a gauge theory that describes D-branes on orbifolds. Quiver diagrams may also be used to described N = 2 {\displaystyle {\mathcal {N}}=2} supersymmetric gauge theories in four dimensions.
Quiver (mathematics), a type of graph; Quiver diagram, a graph in physics; Vector field, a plot with arrows that indicate the direction and magnitude; Quiver tree, a South African succulent plant, Aloidendron dichotomum, related to aloes; A group of cobras
In 1927, Graham Edgar [84] devised the method of using iso-octane and n-heptane as reference chemicals, in order to rate the knock resistance of a fuel with respect to this isomer of octane, [85] thus the name "octane rating". By definition, the isomers iso-octane and n-heptane have an octane rating of 100 and 0, respectively. [86]
N-octane is the octane isomer that has the longest carbon skeleton. Unlike its constitutional isomers, it has a very low knock resistance. The octane isomer, iso-octane, is used as one of the standards for octane ratings. It has a rating of 100 by definition. The octane isomer 2,3,3-Trimethylpentane has an octane rating exceeding 100.
The U.S. Federal Aviation Administration is indefinitely restricting helicopter flights near Washington Reagan National Airport after a deadly collision between an American Airlines regional jet ...
The above definition is based in set theory; the category-theoretic definition generalizes this into a functor from the free quiver to the category of sets.. The free quiver (also called the walking quiver, Kronecker quiver, 2-Kronecker quiver or Kronecker category) Q is a category with two objects, and four morphisms: The objects are V and E.
Jason Oppenheim from "Selling Sunset" called out LA landlords for hiking rent during the fires. California law prohibits price gouging in emergencies.