Hyers-Ulam stability of quadratic forms in 2-normed spaces

Artikel in diesem Heft

1. Special Issue on Harmonic Analysis
2. On the existence of complex Hadamard submatrices of the Fourier matrices
3. A generalized Walsh system for arbitrary matrices
4. The "hot spots" conjecture on the Vicsek set
5. Zygmund inequality of the conjugate function on Morrey-Zygmund spaces
6. Moments of the weighted Cantor measures
7. Sets of p-restriction and p-spectral synthesis
8. The strong maximum principle for Schrödinger operators on fractals
9. Reproducing Kernel Hilbert Space and Coalescence Hidden-variable Fractal Interpolation Functions
10. Special Issue on Analytic Functions and Related Topics
11. Length problems for Bazilevič functions
12. Analytic functions in the unit ball of bounded L-index in joint variables and of bounded 𝐿-index in direction: a connection between these classes
13. Topical Issue on Ulam Stability, Part II
14. Stability of an AQCQ functional equation in non-Archimedean (n, β)-normed spaces
15. Hyers–Ulam stability of a coupled system of fractional differential equations of Hilfer–Hadamard type
16. Existence and stability of impulsive coupled system of fractional integrodifferential equations
17. An admissible Hybrid contraction with an Ulam type stability
18. Existence and Ulam stability for nonlinear implicit differential equations with Riemann-Liouville fractional derivative
19. Ulam-Hyers stability of a parabolic partial differential equation
20. Hyers-Ulam stability of quadratic forms in 2-normed spaces
21. Orthogonal stability of the generalized quadratic functional equations in the sense of Rätz
22. Special Issue based on 7th International Eurasian Conference on Mathematical Sciences and Applications (IECMSA-2018)
23. The analytical solution of Van der Pol and Lienard differential equations within conformable fractional operator by retarded integral inequalities
24. A functionally-analytic method for modelling axial-symmetric flows of ideal fluid
25. On statistical convergence in quasi-metric spaces
26. Elliptic operators and their symbols
27. Regular articles
28. Approximation properties of Kantorovich type q-Balázs-Szabados operators
29. Derivations into annihilators of the ideals of Banach algebras
30. Monotone iterative technique for non-autonomous semilinear differential equations with nonlocal condition
31. The differential-symbol method of constructing the quasi-polynomial solutions of two-point problem
32. Characterizations of compact operators on ℓ_p−type fractional sets of sequences
33. Degrees of the approximations by some special matrix means of conjugate Fourier series
34. Two types of separation axioms on supra soft topological spaces
35. Generalizations of Darbo’s fixed point theorem for new condensing operators with application to a functional integral equation
36. A self adaptive inertial subgradient extragradient algorithm for variational inequality and common fixed point of multivalued mappings in Hilbert spaces
37. On the evolution of solutions of Burgers equation on the positive quarter-plane
38. Further results on the neutrix composition of distributions involving the delta function and the function cosh+-1(x1/r+1)
39. Nonhomogeneous nonlinear oscillator with damping: asymptotic analysis in continuous and discrete time
40. A new approach for solving Bratu’s problem
41. Generalized implicit viscosity approximation method for multivalued mappings in CAT(0) spaces
42. On approximation in generalized Zygmund class
43. Convergence and stability of Fibonacci-Mann iteration for a monotone non-Lipschitzian mapping
44. Sphere and projective space of a C^*-algebra with a faithful state
45. Quantum (q, h)-Bézier surfaces based on bivariate (q, h)-blossoming
46. Slice holomorphic solutions of some directional differential equations with bounded L-index in the same direction
47. Korovkin-type approximation by operators in Riesz spaces via power series method
48. A nonstandard Volterra integral equation on time scales
49. New results on the q-generalized Bernoulli polynomials of level m