On Mackworth's "problem finder": And a reference problem.

1966 ◽  
Vol 21 (2) ◽  
pp. 165-166 ◽  
Author(s):  
Anne Roe
Keyword(s):  
2021 ◽  
Vol 2090 (1) ◽  
pp. 012165
Author(s):  
G Ovando ◽  
J J Peña ◽  
J Morales ◽  
J López-Bonilla

Abstract The exactly solvable Position Dependent Mass Schrödinger Equation (PDMSE) for Mie-type potentials is presented. To that, by means of a point canonical transformation the exactly solvable constant mass Schrödinger equation is transformed into a PDMSE. The mapping between both Schrödinger equations lets obtain the energy spectra and wave functions for the potential under study. This happens for any selection of the O von Roos ambiguity parameters involved in the kinetic energy operator. The exactly solvable multiparameter exponential-type potential for the constant mass Schrödinger equation constitutes the reference problem allowing to solve the PDMSE for Mie potentials and mass functions of the form given by m(x) = skx s-1/(xs + 1))2. Thereby, as a useful application of our proposal, the particular Lennard-Jones potential is presented as an example of Mie potential by considering the mass distribution m(x) = 6kx 5/(x 6 + 1))2. The proposed method is general and can be straightforwardly applied to the solution of the PDMSE for other potential models and/or with different position-dependent mass distributions.


1989 ◽  
Vol 2 (1-2) ◽  
pp. 63-72 ◽  
Author(s):  
Peter Rappelsberger

Sociometry ◽  
1948 ◽  
Vol 11 (4) ◽  
pp. 372 ◽  
Author(s):  
Daisy Starkey Edwards

2001 ◽  
Vol 68 (6) ◽  
pp. 929-936 ◽  
Author(s):  
S. Stramigioli

This paper shows that in the use of Lie groups for the study of the relative motion of rigid bodies some assumptions are not explicitly stated. A commutation diagram is shown which points out the “reference problem” and its simplification to the usual Lie group approach under certain conditions which are made explicit.


Ethics ◽  
1970 ◽  
Vol 80 (3) ◽  
pp. 238-239
Author(s):  
D. A. Strickland
Keyword(s):  

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