# ESTABLISH AN ADDITIVE (s;t)-FUNCTION IN EQUALITIES BY FIXED POINT METHOD AND DIRECT METHOD WITH n-VARIABLES IN BANACH SPACE

• LYVANAN Faculty of Mathematics Teacher Education, Tay Ninh University, Tay Ninh, Vietnam.
Keywords: Additive s, t -functional inequality, fixed point method, direct method, Banach space, Hyers Ulam stability

### Abstract

In this paper we study to solve the of additive s, t -functional inequality with n-variables and their Hyers-Ulam stability. First are investigated in Banach spaces with a fixed point method and last are investigated in Banach spaces with a direct method.These are the main results of this paper.

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Published
2023-01-07
How to Cite
LYVANAN. (2023). ESTABLISH AN ADDITIVE (s;t)-FUNCTION IN EQUALITIES BY FIXED POINT METHOD AND DIRECT METHOD WITH n-VARIABLES IN BANACH SPACE. IJRDO -JOURNAL OF MATHEMATICS, 9(1), 1-13. https://doi.org/10.53555/m.v9i1.5515
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Articles