| 释义 |
ansatz, n. Math.|ˈænsæts|
[a. G. Ansatz attempt, approach.]
A mathematical assumption, esp. about the form of an unknown function, which is made in order to facilitate solution of an equation or other problem.
1942Jrnl. Indian Math. Soc. VI. 41 (title) Studies in Fourier ansatz and parabolic equations. 1964E. A. Power Introd. Quantum Electrodynamics viii. 114 The excited state is assumed to decay exponentially so that its amplitude a(t) = Ae -Γt/2. This ansatz is assumed, together with the small value of e 2/ħc . 1968C. G. Kuper Introd. Theory Superconductivity xi. 184 The microscopic theory..makes a variational Ansatz, designed to take maximum advantage of the Cooper condensation. 1979Nature 22 Nov. 369/1 It is possible to predict an exponent of the magnitude by combining the rules of reptation..with a scaling ansatz. 1990IMA Jrnl. Appl. Math. XLIV. 102 We eliminate η(x) between equations (3) and (4) and substitute the ansatz (6) into the resulting equation. |