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The yellow building in the lower right is a mole hole, also known as a readiness crew building. Minot AFB, ND, in 1973 with its 'Christmas tree' at capacity. A Christmas tree was a type of alert area constructed by the United States Air Force (USAF) for the Strategic Air Command (SAC) during the Cold War.
Gauss's circle problem asks how many points there are inside this circle of the form (,) where and are both integers. Since the equation of this circle is given in Cartesian coordinates by x 2 + y 2 = r 2 {\displaystyle x^{2}+y^{2}=r^{2}} , the question is equivalently asking how many pairs of integers m and n there are such that
The number of points (n), chords (c) and regions (r G) for first 6 terms of Moser's circle problem. In geometry, the problem of dividing a circle into areas by means of an inscribed polygon with n sides in such a way as to maximise the number of areas created by the edges and diagonals, sometimes called Moser's circle problem (named after Leo Moser), has a solution by an inductive method.
The United States Golf Register is the United States's official historical registry of holes-in-one. The U.S. Golf Register is devoted to preserving history with each hole-in-one made, and recording the significance of the achievement as a historical record. There are no registration fees or dues associated with registering.
The most basic non-trivial differential one-form is the "change in angle" form . This is defined as the derivative of the angle "function" (,) (which is only defined up to an additive constant), which can be explicitly defined in terms of the atan2 function.
In addition to being used as food, corn is a source of ethanol fuel, and the NCGA has provided standards and guidelines for farmers growing ethanol. [4]The NCGA has also advocated for continued support and subsidies from the United States government for the ethanol fuel program, citing studies on the benefits for fighting climate change of switching away from fossil fuels towards ethanol.
A "Professional" tree will light up all of the large amber lights simultaneously, and then after a 4 ⁄ 10 second delay, light up the green light. [2] Some classes will use a hybrid tree, known as a .500 Professional tree, where the delay for the green light is .500 seconds instead of the .400 seconds used in a standard Professional tree.
An antihole is a hole in the complement of G, i.e., an antihole is a complement of a hole. The length of the longest induced path in a graph has sometimes been called the detour number of the graph; [ 1 ] for sparse graphs , having bounded detour number is equivalent to having bounded tree-depth . [ 2 ]