CUBIC AND QUARTIC rho-FUNCTIONAL INEQUALITIES IN FUZZY BANACH SPACES
- Title
- CUBIC AND QUARTIC rho-FUNCTIONAL INEQUALITIES IN FUZZY BANACH SPACES
- Author
- 박춘길
- Keywords
- Fuzzy Banach space; cubic rho-functional inequality; quartic rho-functional inequality; fixed point method; Hyers-Ulam stability
- Issue Date
- 2016-12
- Publisher
- ELEMENT
- Citation
- JOURNAL OF MATHEMATICAL INEQUALITIES, v. 10, NO 4, Page. 1123-1136
- Abstract
- In this paper, we solve the following cubic rho-functional inequality
N(f (2x + y) + f(2x - y) - 2f(x + y) - 2f (x - y) - 12f(x) (0.1)
-rho(4f(x + y/2) + 4f(x - y/2) - f(x + y) - f(x - y) - 6f(x)),t) ˃= t/t + phi(x, y)
and the following quartic rho-functional inequality
N(f(2x + y) + f(2x - y) - 4f(x + y) - 4f(x - y) - 24f(x) + 6f(y) (0.2)
-rho(8f(x + y/2) + 8f(x - y/2) - 2f(x + y) - 2f(x - y) - 12f(x) + 3f(y)),t)
˃= t/t + phi(x, y)
in fuzzy normed spaces, where. is a fixed real number with rho not equal 2.
Using the fixed point method, we prove the Hyers-Ulam stability of the cubic rho-functional inequality (0.1) and the quartic rho-functional inequality (0.2) in fuzzy Banach spaces.
- URI
- http://jmi.ele-math.com/10-89/Cubic-and-quartic-rho-functional-inequalities-in-fuzzy-Banach-spaceshttps://repository.hanyang.ac.kr/handle/20.500.11754/102921
- ISSN
- 1846-579X
- DOI
- 10.7153/jmi-10-89
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > MATHEMATICS(수학과) > Articles
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