bicontinuální
Bicontinuální refers to a property of certain mathematical objects, particularly in the context of topology and analysis. A function or a set is described as bicontinuální if it exhibits continuity in two distinct, related ways. In the realm of functions, a bicontinuální mapping $f$ between two topological spaces, say $X$ and $Y$, means that both $f$ and its inverse $f^{-1}$ are continuous. This implies that the function preserves the topological structure of both spaces in a symmetric manner. If $f$ is bicontinuální, it establishes a topological equivalence or homeomorphism between $X$ and $Y$.
The concept can also be extended to sequences or nets. A sequence $(x_n)$ in a topological space