Lagrange polynomial

Etymology
Named after, who published on the topic in 1795, though the method was first discovered in 1779 by.

Noun

 * 1)  For a given set of points $$(x_j,y_j)$$ with no two $$x_j$$ values equal, the polynomial of lowest degree that assumes at each value $$x_j$$ the corresponding value $$y_j$$, so that the functions coincide at each point.