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then the continuity equation (e.g., see Continuity equation#Fluid dynamics) for two-dimensional plane flow becomes ∇ ⋅ ( ρ u ) = 0. {\displaystyle \nabla \cdot (\rho \,\mathbf {u} )=0.} In this case the stream function ψ {\displaystyle \psi } is defined such that
Psi function can refer, in mathematics, to the ordinal collapsing function ...
A mathematical constant is a key number whose value is fixed by an unambiguous definition, often referred to by a symbol (e.g., an alphabet letter), or by mathematicians' names to facilitate using it across multiple mathematical problems. [1]
This small and informal network eventually grew into the modern Best Western hotel brand founded by M.K. Guertin in 1946. [6] The name "Best Western" originated from the fact that most of the chain's original operators were west of the Mississippi River in the United States. By 1962 Best Western had the only hospitality reservations service ...
LHS – left-hand side of an equation. Li – offset logarithmic integral function. li – logarithmic integral function or linearly independent. lim – limit of a sequence, or of a function. lim inf – limit inferior. lim sup – limit superior. LLN – law of large numbers. ln – natural logarithm, log e. lnp1 – natural logarithm plus 1 ...
A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula.
In mathematics, operator theory is the study of linear operators on function spaces, beginning with differential operators and integral operators.The operators may be presented abstractly by their characteristics, such as bounded linear operators or closed operators, and consideration may be given to nonlinear operators.
The second Chebyshev function can be seen to be related to the first by writing it as = where k is the unique integer such that p k ≤ x and x < p k + 1.The values of k are given in OEIS: A206722.