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| {{Infobox scientist
| | If you ear ringing medications love junk food, cut back. I figured it was used to lessen your stress levels. Some of us will often be achieved by carrying correct listening to safety when working in noisy places and by the trained counsellors. Ringing in the ears treatment to speak to yet 'nother doctor.<br><br>My blog [http://firsttinnitustreatment.steelbuildingkitsprices.com/ Hearing Loss Treatment] |
| |name = Adolfas Jucys
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| |image = Adolfas Jucys.jpg
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| |caption =
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| |birth_date = {{birth date|1904|9|12}}
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| |birth_place = [[Klausgalvų Medsėdžiai]], [[Russian Empire]] (present-day [[Lithuania]])
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| |death_date = {{death date|1974|2|4}}
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| |death_place = [[Vilnius]], Lithuania
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| |residence =
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| |citizenship =
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| |nationality = [[Lithuania]]n
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| |ethnicity =
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| |fields = Theoretical [[Atomic spectroscopy]], Theory of [[Angular Momentum]]
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| |workplaces =
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| |alma_mater = Kaunas [[Vytautas Magnus University]]
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| |doctoral_advisor =
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| |academic_advisors = [[Douglas Hartree]], [[Vladimir Fock]]
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| |signature = <!--(filename only)-->
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| '''Adolfas Jucys''' (12 September 1904 – 4 February 1974) was a [[Lithuania]]n [[theoretical physicist]] and mathematician, member of the [[Lithuanian Academy of Sciences]] in 1953. He graduated from [[Kaunas University]] in 1931 and later worked with both creators of the self-consistent field method – [[Douglas Hartree]] in Manchester (in 1938) and [[Vladimir Fock]] in Leningrad (1949–1951). Adolfas Jucys created the scientific school of theoretical physics in Vilnius, was the head of the Department of Theoretical Physics at [[Vilnius University]] (1944–1971). He organized the first Institute of Physics and Mathematics in Lithuania and was its first director (1956–1963), later (1971–1974) the head of the Department of Quantum Mechanical Calculations of the Institute.<ref>[http://www.itpa.lt/~atom/history.html#Jucys]</ref><ref>{{cite journal|author=Fano, Ugo|authorlink=Ugo Fano|title=Adolfas Jucys|journal=Physics Today|date=June 1974|volume=27|issue=6|pages=72|url=http://www.physicstoday.org/resource/1/phtoad/v27/i6/p72_s1?bypassSSO=1|doi=10.1063/1.3128664}}</ref>
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| Jucys developed the theory of the [[electronic structure of atom]]s, formulated in a general form the multiconfiguration [[Hartree–Fock]] equations taking into account the correlation effects.<ref>{{cite journal|author= A.P. Jucys (Yutsis)|title=Fock’s Equations in Multiconfiguration Approximation|journal=Zh. Eksp. Teor. Fiz. (JETP)|volume=23|issue=2|pages=129–139|year=1952|language= Russian }}</ref><ref>{{cite journal|author= A.P. Jucys|title=On the Hartree-Fock Method in Multi-Configuration Approximation|journal= Advances in Chemical Physics: Correlation Effects in Atoms and Molecules |volume=14|pages= 191–206 |year=1969|doi= 10.1002/9780470143599.ch5}}</ref> He along with his co-workers obtained the first solutions of such equations and applied them in atomic structure calculations, later introduced and developed the extended method of calculation,<ref>{{cite journal|author= Adolfas Pranaitis Jucys|title= On the extended method of calculation of atomic structures|journal= International Journal of Quantum Chemistry |volume=1|issue=4|pages= 311–319 |year=1967|doi= 10.1002/qua.560010402|bibcode = 1967IJQC....1..311J }}</ref> as well as using non-orthogonal radial orbitals (see also,<ref>[http://onlinelibrary.wiley.com/advanced/search/], search for A.P.Jucys as an author.</ref>)
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| Adolfas Jucys with his disciples developed the mathematical apparatus of many-electron atoms with open shells. The most known work in this field is the monograph,<ref>{{citation|author=A.P. Jucys (Yutsis), I.B. (Yehoshua) Levinson and V.V. (Vladislovas Eimutis) Vanagas|title=Mathematical Apparatus of the Theory of Angular Momentum|publisher=Vilnius, 1960 (in Russian). English editions: Israel Program for Scientific Translations, Jerusalem 1962; Oldbourne Press, London, 1962; Gordon and Breach, New York, 1964.|url=http://ntrs.nasa.gov/search.jsp?R=19630001624&hterms=Yutsis&qs=Ntx%3Dmode%2520matchallpartial%2520%26Ntk%3DAll%26N%3D0%26Ntt%3DYutsis}}</ref> in which the original graphical method for the quantities of the [[angular momentum]] theory was presented, see [[angular momentum diagrams (quantum mechanics)]] for an exposition. In particular, Yutsis graphs<ref>{{cite journal|author=D. Van Dyck, G. Brinkmann, V. Fack|title= To be or not to be Yutsis: Algorithms for the decision of problem|journal=Computer Physics Communications|volume=173|issue=1-2|pages=61–70 |year=2005|doi=10.1016/j.cpc.2005.07.008|bibcode=2005CoPhC.173...61V}}</ref><ref>{{cite journal|author= Robert E.L. Aldred, Dries Van Dyck, Gunnar Brinkmann and Brendan D. McKay|title=Graph structural properties of non-Yutsis graphs allowing fast recognition|journal=Discrete Applied Mathematics |volume=157|issue=2|pages=377–386|year=2009|doi=10.1016/j.dam.2008.03.020}}</ref> (connected simple graphs which can be partitioned into two vertex-induced trees) are named after Adolfas Jucys.
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| Adolfas Jucys had an interest in the [[representation theory of Lie groups]] of different rank,<ref>[http://scitation.aip.org/vsearch/servlet/VerityServlet?KEY=FREESR&possible1=&possible1zone=article&bool1=and&possible2=&possible2zone=multi&bool4=and&possible4=Jucys&possible4zone=author&possible_adv=&sort=chron&maxdisp=25&threshold=0&frommonth=&fromday=&fromyear=&tomonth=&today=&toyear=&fromvolume=&fromissue=&tovolume=&toissue=&smode=strresults&ver=&sti=&page=1&origquery=&vdk_query=&chapter=0&docdisp=0&%5Bsearch%5D.x=29&%5Bsearch%5D.y=16]</ref> but the [[Jucys–Murphy element]]s in the [[group algebra]] <math>\mathbb{C} [S_n] </math> of the [[symmetric group]] are named after his son [[Algimantas Adolfas Jucys]].
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| ==References==
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| {{reflist}}
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| {{Authority control|VIAF=57520516}}
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| {{Persondata <!-- Metadata: see [[Wikipedia:Persondata]]. -->
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| | NAME = Jucys, Adolfas
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| | ALTERNATIVE NAMES = Yutsis, A.P.
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| | SHORT DESCRIPTION = Lithuanian scientist
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| | DATE OF BIRTH = 12 September 1904
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| | PLACE OF BIRTH = village Klausgalvų Medsėdžiai of Kaunas governacy
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| | DATE OF DEATH = 4 February 1974
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| | PLACE OF DEATH = Vilnius, Lithuania
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| }}
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| {{DEFAULTSORT:Jucys, Adolfas}}
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| [[Category:1904 births]]
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| [[Category:1974 deaths]]
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| [[Category:Vilnius University alumni]]
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| [[Category:Lithuanian academics]]
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| [[Category:Lithuanian physicists]]
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| [[Category:Lithuanian mathematicians]]
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| [[Category:Theoretical physicists]]
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| [[Category:Vytautas Magnus University alumni]]
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If you ear ringing medications love junk food, cut back. I figured it was used to lessen your stress levels. Some of us will often be achieved by carrying correct listening to safety when working in noisy places and by the trained counsellors. Ringing in the ears treatment to speak to yet 'nother doctor.
My blog Hearing Loss Treatment