VOL. 51 · NO. 2 | April 2021
Front Matter
Rocky Mountain J. Math. 51 (2), (April 2021)
No abstract available
Horst Alzer, Man Kam Kwong
Rocky Mountain J. Math. 51 (2), 383-397, (April 2021) DOI: 10.1216/rmj.2021.51.383
KEYWORDS: sine polynomials, Inequalities‎, absolutely monotonic, 26D05, 26A48, 33B10
Jeremiah Bartz, Bruce Dearden, Joel E. Iiams
Rocky Mountain J. Math. 51 (2), 399-411, (April 2021) DOI: 10.1216/rmj.2021.51.399
KEYWORDS: balancing numbers, Lucas-balancing numbers, Pell and associated Pell sequences, recurrence relations, 11B39, 11B83
Rakhee Basu
Rocky Mountain J. Math. 51 (2), 413-421, (April 2021) DOI: 10.1216/rmj.2021.51.413
KEYWORDS: delay differential equations, differential transform method, Taylor series, 34Kxx
Abdelkader Ben Hassine, Liangyun Chen, Chang Sun
Rocky Mountain J. Math. 51 (2), 423-438, (April 2021) DOI: 10.1216/rmj.2021.51.423
KEYWORDS: BiHom-Novikov superalgebras, quadratic BiHom-Novikov superalgebras, 1-parameter formal deformations, 15A63, 17B35, 17B30
Mustafa Bojakli, Hasan Sankari
Rocky Mountain J. Math. 51 (2), 439-446, (April 2021) DOI: 10.1216/rmj.2021.51.439
KEYWORDS: modular curves, Weierstrass points, bielliptic curves, 11G18, 14H55
Shawn Burkett
Rocky Mountain J. Math. 51 (2), 447-458, (April 2021) DOI: 10.1216/rmj.2021.51.447
KEYWORDS: group determinant, Schur ring, supercharacter theory, 20C15
Kalyan Chakraborty, Azizul Hoque, Richa Sharma
Rocky Mountain J. Math. 51 (2), 459-471, (April 2021) DOI: 10.1216/rmj.2021.51.459
KEYWORDS: Diophantine equation, integer solution, S-integers, Lucas sequences, primitive divisors, 11D41, 11D61, 11R29
Gopal Datt, Shesh Kumar Pandey
Rocky Mountain J. Math. 51 (2), 473-489, (April 2021) DOI: 10.1216/rmj.2021.51.473
KEYWORDS: slant Toeplitz operator, Lebesgue space, λ-slant Toeplitz operator, Torus, 47B35
Logan S. Fox, Peter Oberly, J. J. P. Veerman
Rocky Mountain J. Math. 51 (2), 491-508, (April 2021) DOI: 10.1216/rmj.2021.51.491
KEYWORDS: Alexandrov space, Geodesic, bounded curvature, 51F99, 53C45, 53C22
Boulbaba Ghanmi, Imed Basdouri, Tarek Fajraoui, Lotfi Souden
Rocky Mountain J. Math. 51 (2), 509-526, (April 2021) DOI: 10.1216/rmj.2021.51.509
KEYWORDS: nonlinear systems, time-varying cascade systems, Lyapunov function, practical exponential stability, practical stabilization, 34D10, 34D20, 93D05, 93D15
Abderrahim Guerfi, Abdelouaheb Ardjouni
Rocky Mountain J. Math. 51 (2), 527-537, (April 2021) DOI: 10.1216/rmj.2021.51.527
KEYWORDS: Krasnoselskii's theorem, contraction, neutral difference equation, periodic solution, fundamental matrix solution, 39A23, 39A12
Jinho Han, Haseo Ki, Donghoon Park
Rocky Mountain J. Math. 51 (2), 539-548, (April 2021) DOI: 10.1216/rmj.2021.51.539
KEYWORDS: Euler products, natural boundaries, 11M41, 11M26
Li He, Guangfu Cao
Rocky Mountain J. Math. 51 (2), 549-570, (April 2021) DOI: 10.1216/rmj.2021.51.549
KEYWORDS: Hardy–Sobolev space, Toeplitz operator, Fredholm operator, 32A37, 47B35, 47A30, 47A53
Anuj Jakhar
Rocky Mountain J. Math. 51 (2), 571-580, (April 2021) DOI: 10.1216/rmj.2021.51.571
KEYWORDS: discriminant, Integral basis, monogeneity, 11R04, 11R29
Sumit Kumar Jha
Rocky Mountain J. Math. 51 (2), 581-583, (April 2021) DOI: 10.1216/rmj.2021.51.581
KEYWORDS: sum of divisors, sum of squares, partial Bell polynomials, Faà di Bruno's formula, Jacobi's theta function, 11A05, 11P99
F. E. A. Johnson
Rocky Mountain J. Math. 51 (2), 585-591, (April 2021) DOI: 10.1216/rmj.2021.51.585
KEYWORDS: cancellation, stable module, generalized torsion module, 16D70, 16S90, 20E06
Irena Kosi-Ulbl, Joso Vukman
Rocky Mountain J. Math. 51 (2), 593-600, (April 2021) DOI: 10.1216/rmj.2021.51.593
KEYWORDS: Prime ring, semiprime ring, Banach space, standard operator algebra, derivation‎, inner derivation, generalized inner derivation, 16W25, 47B01, 39B52‎
Changjing Li, Yuanyuan Zhao, Fangfang Zhao
Rocky Mountain J. Math. 51 (2), 601-612, (April 2021) DOI: 10.1216/rmj.2021.51.601
KEYWORDS: *-Jordan-type derivations, *-derivations, von Neumann algebras, 47B47, 46L10
Hui Li
Rocky Mountain J. Math. 51 (2), 613-620, (April 2021) DOI: 10.1216/rmj.2021.51.613
KEYWORDS: C*-algebra, self-similar k-graph, primitive ideal, Jacobson topology, 46L05
Fengxia Liu, Boling Guo
Rocky Mountain J. Math. 51 (2), 621-641, (April 2021) DOI: 10.1216/rmj.2021.51.621
KEYWORDS: fifth-KdV, Initial-boundary value problem, contraction map, local existence, global solution, 35A01, 35B45
Qian Liu, Yanxia Hu
Rocky Mountain J. Math. 51 (2), 643-656, (April 2021) DOI: 10.1216/rmj.2021.51.643
KEYWORDS: Differential equation, first integral method, first integrals, solutions, 34A05, 34A34
Vlasta Matijević, Leonard R. Rubin
Rocky Mountain J. Math. 51 (2), 657-667, (April 2021) DOI: 10.1216/rmj.2021.51.657
KEYWORDS: approximate inverse system, Čech system, component, quasicomponent, totally disconnected, 54B35, 55N05
Sadegh Nazardonyavi
Rocky Mountain J. Math. 51 (2), 669-688, (April 2021) DOI: 10.1216/rmj.2021.51.669
KEYWORDS: Egyptian fraction, unit fraction, Schinzel conjecture, Diophantine equation, 11-xx, 11DXX, 11Y50
Minh Dien Nguyen
Rocky Mountain J. Math. 51 (2), 689-707, (April 2021) DOI: 10.1216/rmj.2021.51.689
KEYWORDS: Gronwall inequality, ψ-Hilfer fractional derivative, weakly singular source, Langevin equation, Fractional differential equations, 34A08, 26A33, 26D10, 34A12
Helmut Prodinger
Rocky Mountain J. Math. 51 (2), 709-720, (April 2021) DOI: 10.1216/rmj.2021.51.709
KEYWORDS: ternary paths, generating functions, generalized binomial series, Christmas lecture, 05A15
Xavier Roulleau
Rocky Mountain J. Math. 51 (2), 721-732, (April 2021) DOI: 10.1216/rmj.2021.51.721
KEYWORDS: conic configurations and arrangements, H-constants, 14C20, 14N20
Samir H. Saker, Ramy R. Mahmoud
Rocky Mountain J. Math. 51 (2), 733-746, (April 2021) DOI: 10.1216/rmj.2021.51.733
KEYWORDS: maximal operators, Hardy type inequality, Muckenhoupt weights, 26D15, 42B25, 42B35
Yuan Shen, Xia Zheng
Rocky Mountain J. Math. 51 (2), 747-760, (April 2021) DOI: 10.1216/rmj.2021.51.747
KEYWORDS: Poisson universal enveloping algebra, generalized Poisson–Ore extension, twisted tensor product, 16S10, 17B63
Back to Top