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Bull. Belg. Math. Soc. Simon Stevin 26 (4), (november 2019)
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Articles
L. Bernal-González, H.J.Cabana Méndez, G.A. Muñoz-Fernández, J.B. Seoane-Sepúlveda
Bull. Belg. Math. Soc. Simon Stevin 26 (4), 481-492, (november 2019) DOI: 10.36045/bbms/1576206349
KEYWORDS: polynomial norm, strict ordering, induced topology, 54A10, 30C10, 46B50, 47B38
Moosa Gabeleh, Calogero Vetro
Bull. Belg. Math. Soc. Simon Stevin 26 (4), 493-503, (november 2019) DOI: 10.36045/bbms/1576206350
KEYWORDS: Best proximity point (pair), cyclic (noncyclic) generalized condensing operator, system of differential equations, strictly convex Banach space, 34A12, 47H09
Armin Rainer
Bull. Belg. Math. Soc. Simon Stevin 26 (4), 505-517, (november 2019) DOI: 10.36045/bbms/1576206353
KEYWORDS: Quasianalytic, ultradifferentiable class, Denjoy--Carleman class, Osgood--Hartogs type problem, 26E10, 30D60, 46E10, 58C25
Francesca Cagliari, Maria Manuel Clementino
Bull. Belg. Math. Soc. Simon Stevin 26 (4), 519-526, (november 2019) DOI: 10.36045/bbms/1576206354
KEYWORDS: Topological Group, representability of actions, split extension classifier, group of homeomorphisms, Stone-Čech compactification, 57S05, 54H11, 22A05, 18B30
Yan-Kui Song, Wei-Feng Xuan
Bull. Belg. Math. Soc. Simon Stevin 26 (4), 527-534, (november 2019) DOI: 10.36045/bbms/1576206355
KEYWORDS: monotonically star $\sigma$-compact, monotonically star countable, star Lindelöf, monotonically star Lindelöf, 54D20, 54D30, 54D40
Zejun Hu, Zeke Yao, Xi Zhang
Bull. Belg. Math. Soc. Simon Stevin 26 (4), 535-549, (november 2019) DOI: 10.36045/bbms/1576206356
KEYWORDS: Hypersurface, nearly Kähler manifold, Hopf hypersurface, almost contact structure, shape operator, 53B35, 53C30, 53C42
Rosihan M. Ali, See Keong Lee, Saiful R. Mondal
Bull. Belg. Math. Soc. Simon Stevin 26 (4), 551-570, (november 2019) DOI: 10.36045/bbms/1576206357
KEYWORDS: starlike and convex functions, Janowski starlike and convex, Differential subordination, Bessel and hypergeometric functions, 30C45, 34A30, 33C05
R. P. Pant, Nihal Yilmaz Özgür, Nihal Taş
Bull. Belg. Math. Soc. Simon Stevin 26 (4), 571-589, (november 2019) DOI: 10.36045/bbms/1576206358
KEYWORDS: fixed point, fixed circle, discontinuity, activation function, real-valued neural network, complex-valued neural network, 47H10, 54H25, ‎55M20
Fabien Durand, Valérie Goyheneche
Bull. Belg. Math. Soc. Simon Stevin 26 (4), 591-618, (november 2019) DOI: 10.36045/bbms/1576206359
KEYWORDS: constant arithmetic subsequence, eigenvalue, subshift, morphic, 37B10, 54H20‎, 68R15, 68Q45
Yosum Kurtulmaz, Sait Halicioglu, Huanyin Chen
Bull. Belg. Math. Soc. Simon Stevin 26 (4), 619-631, (november 2019) DOI: 10.36045/bbms/1576206360
KEYWORDS: $CU$ ring, $CU$-decomposition, matrix ring, uniquely nil clean ring, *-clean ring, nil *-clean ring, 15B33, 15B36, 16S70, 16U99
Krzysztof Płotka
Bull. Belg. Math. Soc. Simon Stevin 26 (4), 633-639, (november 2019) DOI: 10.36045/bbms/1576206361
KEYWORDS: lineability, additive functions, perfectly everywhere surjective functions, 15A03, 26A21, 03E75
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