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the chromatic number of a graph in graph theory; the Euler characteristic in algebraic topology; electronegativity in the periodic table; the Fourier transform of a linear response function; a character in mathematics; especially a Dirichlet character in number theory; sometimes the mole fraction; a characteristic or indicator function in ...
All numbers go into the X register first; the number in the X register is shown on the display. Flag register: The function for the calculation is stored here until the calculator needs it. Permanent memory The instructions for in-built functions (arithmetic operations, square roots, percentages, trigonometry, etc.) are stored here in binary form.
The number π (/ p aɪ /; spelled out as "pi") is a mathematical constant, approximately equal to 3.14159, that is the ratio of a circle's circumference to its diameter.It appears in many formulae across mathematics and physics, and some of these formulae are commonly used for defining π, to avoid relying on the definition of the length of a curve.
When a multi-component mixture is distilled, the overhead fraction and the bottoms fraction typically contain much more than one or two components. For example, some intermediate products in an oil refinery are multi-component liquid mixtures that may contain alkane , alkene and alkyne hydrocarbons —ranging from methane , having one carbon ...
The graph on the right shows the result of such a computation. It shows how radius varies with mass for non-relativistic (blue curve) and relativistic (green curve) models of a white dwarf. Both models treat the white dwarf as a cold Fermi gas in hydrostatic equilibrium. The average molecular weight per electron, μ e, has been set equal to 2 ...
Yellow: radiation between 3.8 and 19 microsieverts per hour. This corresponds to less than a chest X-ray to 3 chest X-rays. This is the threshold to designate an area an evacuation zone. The yellow area extended far beyond the evacuation zone already put into place. Light green: radiation between 0.5 and one microsieverts per hour.
Zero kelvin (−273.15 °C) is defined as absolute zero.. Absolute zero is the lowest limit of the thermodynamic temperature scale; a state at which the enthalpy and entropy of a cooled ideal gas reach their minimum value.
This is useful in solving such recurrences, since by using partial fraction decomposition we can write any proper rational function as a sum of factors of the form 1 / (ax + b) and expand these as geometric series, giving an explicit formula for the Taylor coefficients; this is the method of generating functions.