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Order Ideals on Lexicographic Direct Sum of Three Totally Ordered Abelian Groups
Cauchy: Jurnal Matematika Murni dan AplikasiOrder ideals play an important role in the study of abstract algebra, especially in the study of ordered groups. In this paper, we focus on the study of order ideals in lexicographic direct sums of totally ordered Abelian groups.
Dian Latifah +3 more
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Journal of Mathematical Analysis and Applications, 2014 Abstract This paper investigates when a bounded operator on Hilbert space has the property that its square is similar to to the direct sum of it with itself. A few general results are obtained and the normal operators and unilateral shifts having this property are characterized. Several additional examples are explored.
John B. Conway +2 more
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Linear Algebra and its Applications, 1991 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Heitmann, Raymond, Wiegand, Roger
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Pseudospectra of the direct sum of linear operators in ultrametric Banach spaces
Қарағанды университетінің хабаршысы. Математика сериясыIn this paper, a characterization of essential pseudospectra of bounded linear operators on ultrametric Banach spaces over a spherically complete field was given and the notions of pseudospectra and condition pseudospectra of the direct sum of linear ...
J. Ettayb
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Sum-Power Minimization in Multiuser Single-DF-Relay Networks with Direct Links
International Journal of Distributed Sensor Networks, 2016 Forming cooperation through relay's assistance is a promising method to realize green communication by reducing transmission power. In this paper, for multiuser single-DF-relay wireless networks with direct links, the optimal power allocation strategy ...
Shiguo Wang, Haixia Peng, Xianru Liu
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Journal of Algebraic CombinatoricsAbstractFor classical matroids, the direct sum is one of the most straightforward methods to make a new matroid out of existing ones. This paper defines a direct sum for q-matroids, the q-analogue of matroids. This is a lot less straightforward than in the classical case, as we will try to convince the reader.
Michela Ceria, Relinde Jurrius
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Characterization of self-adjoint domains for differential operators with interior singular points
Arab Journal of Mathematical Sciences, 2016 We characterize the self-adjoint domains of general even order linear ordinary differential operators which have finite interior singular points in terms of real-parameter solutions of the differential equation.
Qiuxia Yang, Wanyi Wang
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Turkish Journal of Orthodontics, 1994 “The SUM of Posterior Angles” in Björk’s Polygon is being used for predicting the patients growth direction. The angle between Mandibular Plane and SN is also used for similar purpose.
Enis Güray, Metin Orhan, Cenk Doruk
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On decomposable pseudofree groups
International Journal of Mathematics and Mathematical Sciences, 1999 An Abelian group is pseudofree of rank ℓ if it belongs to the extended genus of ℤℓ, i.e., its localization at every prime p is isomorphic to ℤpℓ.
Dirk Scevenels
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Cancellation in direct sums of groups [PDF]
Proceedings of the American Mathematical Society, 1956 5. L. K. Hua, A note on the total matrix ring over a non-commutative field, Annales de la Soci&t6 Polonaise de Math6matique vol. 25 (1952) pp. 188-198. 6. N. Jacobson and C. E. Rickart, Jordan homomorphisms of rings, Trans. Amer. Math. Soc. vol. 69 (1950) pp. 479-502. 7. F. Kasch, Invariante Untermoduln des Endomorphismenrings eines Vektorraums, Archiv
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