EN
We provide a complete isomorphic classification of the Banach spaces of continuous functions on the compact spaces $2^{𝔪} ⊕ [0,α]$, the topological sums of Cantor cubes $2^{𝔪}$, with 𝔪 smaller than the first sequential cardinal, and intervals of ordinal numbers [0,α]. In particular, we prove that it is relatively consistent with ZFC that the only isomorphism classes of $C(2^{𝔪} ⊕ [0,α])$ spaces with 𝔪 ≥ ℵ₀ and α ≥ ω₁ are the trivial ones. This result leads to some elementary questions on large cardinals.