Using the fixed point method, we prove the Ulam stability of two general functional equations in several variables in 2-Banach spaces. As corollaries from our main results, some outcomes on the stability of a few known equations being special cases of the considered ones will be presented. In particular, we extend several recent results on the Ulam stability of functional equations in 2-Banach spaces.

中文翻译：

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不动点法在2-Banach空间中泛函方程的Ulam稳定性

使用不动点法，我们证明了2 Banach空间中两个变量的两个泛函方程的Ulam稳定性。作为我们主要结果的推论，将给出一些已知方程的稳定性的某些结果，这些方程是所考虑方程的特殊情况。特别是，我们扩展了关于2 Banach空间中泛函方程的Ulam稳定性的最新结果。