Results 31 to 40 of about 8,562 (131)

Coupled tensorial form for atomic relativistic two-particle operator given in second quantization representation

, 2010
General formulas of the two-electron operator representing either atomic or effective interactions are given in a coupled tensorial form in relativistic approximation.
A. Bar-Salomand, A. P. Jucys, A. P. Jucys, B. R. Judd, C. C. Cannon, C. Froese Fischer, F. A. Parpia, G. Gaigalas, G. Gaigalas, G. Merkelis, G. Merkelis, G. Merkelis, H. C. Ho, I. Lindgren, P. Bogdanovich, R. Juršenas, S. Fritzsche, V. A. Dzuba, W. R. Johnson, Z. Rudzikas, Z. Rudzikas   +20 more
core   +1 more source

Origin of the Great Nemunas Loops, South Lithuania [PDF]

, 2005
The Nemunas River, one of the largest rivers of the Baltic region, is characterised by a generally straight valley. In the middle part of its course the Great Nemunas Loops are distinct features that occupy an area of 320 km2 near the Birštonas Resort ...
Baltrūnas, Valentinas, Karmaza, Bronislavas, Šliaupa, Saulius   +2 more
core   +1 more source

On the secondly quantized theory of many-electron atom

, 1996
Traditional theory of many-electron atoms and ions is based on the coefficients of fractional parentage and matrix elements of tensorial operators, composed of unit tensors.
Cowan R D, Froese Fischer C, Gaigalas G A, Gaigalas G A, Gaigalas G A, Gediminas Gaigalas, Jucys A P, Jucys A P, Judd B R, Lindgren I, Merkelis G V, Merkelis G V, Nikitin A A, Rudzikas Z B, Rudzikas Z B, Rudzikas Z B, Zenonas Rudzikas   +16 more
core   +2 more sources

An efficient approach for spin-angular integrations in atomic structure calculations

, 2004
A general method is described for finding algebraic expressions for matrix elements of any one- and two-particle operator for an arbitrary number of subshells in an atomic configuration, requiring neither coefficients of fractional parentage nor unit ...
Burke P G, Charlotte Froese Fischer, Condon E U, Cowan R D, Fano U, Gaigalas G A, Gaigalas G A, Gaigalas G A, Gediminas Gaigalas, Grant I P, Jucys A P, Jucys A P, Judd B R, Judd B R, Lindgren I, Merkelis G V, Merkelis G V, Rudzikas Z B, Rudzikas Z B, Rudzikas Z B, Uylings P H M, Uylings P H M, Wigner E P, Yutsis A P, Zenonas Rudzikas   +24 more
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Mintis ir judėjimas. (Ištraukos)

Problemos, 2014
H. Bergsono veikalo „Mintis ir judėjimas“ ištraukose nagrinėjamas filosofijos ir mokslo santykis, filosofijos specifika ir statusas, aptariamas jos metodas. Teigiama, kad pažinime visada dalyvauja intuityvūs komponentai.
Henri Bergsonas
doaj   +1 more source

The transformation of irreducible tensor operators under spherical functions

, 2010
The irreducible tensor operators and their tensor products employing Racah algebra are studied. Transformation procedure of the coordinate system operators act on are introduced.
A.K. Bhatia, A.P. Jucys, A.P. Jucys, D. Pinchon, E.U. Condon, G. Gaigalas, G. Racah, Gintaras Merkelis, I.M. Gel’fand, I.P. Grant, M.A. Abbadi, Rytis Juršėnas, U. Fano, Z.B. Rudzikas   +13 more
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Architecture of Jesuit Churches in the Former Polish-Lithuanian Commonwealth, 1564–1773 [PDF]

, 2018
The article presents the history and accomplishments of Jesuit architecture in the Polish-Lithuanian Commonwealth from the late sixteenth to the late eighteenth century.
Betlej, Andrzej
core   +1 more source

E. Nagelio logikos koncepcija

Problemos, 2015
Straipsnyje analizuojama E. Nagelio logikos koncepcija. Teigiama, kad XVII–XVIII a. gnoseologiniams tyrinėjimams būdinga logikos universalizacijos idėja. XIX a.
Nijolė Petkevičiūtė
doaj   +1 more source

Statistical analysis of a comprehensive list of visual binaries

, 2015
Visual binary stars are the most abundant class of observed binaries. The most comprehensive list of data on visual binaries compiled recently by cross-matching the largest catalogues of visual binaries allowed a statistical investigation of ...
Chulkov, D., Kovaleva, D., Malkov, O., Yikdem, G. M., Yungelson, L.   +4 more
core   +2 more sources

Descartes ir nauji filosofijos horizontai

Problemos, 2014
Straipsnyje analizuojamos R. Descartes‘o mąstančiojo žmogaus (homo cogitans), mokslo, pažinimo sampratos, aptariama R. Descartes‘o idėjų raida Lietuvoje. Teigiama, kad R.
Romanas Plečkaitis
doaj   +1 more source