In mathematics, a "well-defined" function is one where there is only 1 output for a given input (as a side note, you can have only single input functions, and still semantically get multiple ...

Visualizing Functions as Graphs. In the applet below is intended to help you understand the connection between the graph of a function and the function itself. Recall that a function can be thought of ...

While SHA-256 can generate a hashed output in milliseconds with very little computing power, it makes determining the input difficult. Fast Fact Not all cryptocurrencies use SHA-256.