A MTA MATEMATIKAI ÉS FIZIKAI TUDOMÁNYOK OSZTÁLYÁNAK KÖZLEMÉNYEI 23. KÖTET (1977)

Mikolás, M.: On the new trends in the development of the theory of fractional calculus ... 373 Pogány, Cs.: Some recent problems concerning with computers, II 101 III 365 Pogány, Cs.: On processing of unsatisfiable constrains, II 197 Ruda, M. : Numerical proof of inequalities, II 115 Ruda, M.: Investigation of the solidity of figure systems 203 Szász, F.: Investigations in the radical theory of algebraic structures, (II) 1 Tran Quy Tien: Extension of a theorem of D. Rees 121 FROM THE FOREIGN LITERATURE Gohberg, I. C.—Krejn, M. G. : Basic statements on the defect-numbers, roots and indexes of the linear operators (translated from Russian to Hungarian by K. Buzási) 387 Krejn, M. G.—Krasznoszelszkij, M. A.: Basic theorems on the extension Hermitic-operators and some applications to the theory of orthogonal polynoms and momentum-problem (translated from Russian to Hungarian by J. Bognár) 139 List of Publications of the Ordinary and Correspondent Members of the DEPARTMENT FOR MATHEMATICAL AND PHYSICAL SCIENCES of the HUNGARIAN ACADEMY OF SCIENCES for the years 1971—72 461 BOOK REVIEWS Pogány, Cs.: Two books about the Work of János Bolyai: BOLYAI JÁNOS: Appendix, the Science of the Space. Editing by F. Kárteszi — P. SZÁSZ: Introduction to the Bolyai— Lobacsevszkij-Geometry 189 77-431 — Szegedi Nyomda — F. v.: Dobó József

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