Recent questions tagged functions

Let $T(V, E)$ be an undirected tree with $n$ vertices, where $V=$ $\left\{v_{1}, v_{2}, \ldots, v_{n}\right\}$. Let $d(i)$ represent the degree of vertex $v_{i}$. Let $f$...

For two functions $f, g: \mathbb{N} \rightarrow \mathbb{N}$ we say $f=O(g)$ if there exists $n_{0} \in \mathbb{N}$ and $c \in \mathbb{R}^{+}$such that for all $n \geq n_{...

In this question they have just said that f: A- B is a function , given nothing about it whether its one one or onto or both . In such a case what function example to con...