- [Stable marriage algorithm](https://en.wikipedia.org/wiki/Stable_marriage_problem): an algorithm to match two categories (such as men and women) such that no two elements would both prefer to be matched with each other rather than their current match. (See also [Gale-Shapely algorithm](https://en.wikipedia.org/wiki/Gale%E2%80%93Shapley_algorithm).) - [[Djikstra's algorithm]]: find the shortest path along a weighted graph (e.g., a road network with distance or travel time information). - [Fast Fourier Transform (FFT)](https://en.wikipedia.org/wiki/Fast_Fourier_transform): convert a signal from time or space to the frequency domain with many applications, such as the [valuation of options](https://engineering.nyu.edu/sites/default/files/2018-08/CarrMadan2_0.pdf).