Search results
Results From The WOW.Com Content Network
Numerical solutions of the Thomas–Fermi equation. In mathematics, the Thomas–Fermi equation for the neutral atom is a second order non-linear ordinary differential equation, named after Llewellyn Thomas and Enrico Fermi, [1] [2] which can be derived by applying the Thomas–Fermi model to atoms.
The MPN method involves taking the original solution or sample, and subdividing it by orders of magnitude (frequently 10× or 2×), and assessing presence/absence in multiple subdivisions. The degree of dilution at which absence begins to appear indicates that the items have been diluted so much that there are many subsamples in which none appear.
The District of Columbia Water and Sewer Authority (DC Water) provides drinking water, sewage collection, and sewage treatment for Washington, D.C. The utility also provides wholesale wastewater treatment services to several adjoining municipalities in Maryland and Virginia , and maintains more than 9,000 public fire hydrants in Washington, D.C.
Thomas' algorithm is not stable in general, but is so in several special cases, such as when the matrix is diagonally dominant (either by rows or columns) or symmetric positive definite; [1] [2] for a more precise characterization of stability of Thomas' algorithm, see Higham Theorem 9.12. [3]
Joseph Miller Thomas (16 January 1898 – 1979) was an American mathematician, known for the Thomas decomposition of algebraic and differential systems. [ 1 ] Thomas received his Ph.D., supervised by Frederick Wahn Beal, from the University of Pennsylvania with thesis Congruences of Circles, Studied with reference to the Surface of Centers . [ 2 ]
Thomas' cyclically symmetric attractor. In the dynamical systems theory , Thomas' cyclically symmetric attractor is a 3D strange attractor originally proposed by René Thomas . [ 1 ] It has a simple form which is cyclically symmetric in the x, y, and z variables and can be viewed as the trajectory of a frictionally dampened particle moving in a ...
Camille Jordan showed [2] that any algebraic equation may be solved by use of modular functions. This was accomplished by Thomae in 1870. [ 3 ] Thomae generalized Hermite's approach by replacing the elliptic modular function with even more general Siegel modular forms and the elliptic integral by a hyperelliptic integral .
MacCluer is the daughter of George M. Richards, a research chemist and attorney. She is married to mathematician Thomas Kriete. [3] She graduated from Michigan State University in 1975 and earned her Ph.D. there in 1983. [1] Her dissertation, Holomorphic Self-Maps of the Unit Ball: Iteration and Composition Operators, was supervised by Joel ...