Last summer, Nebus Research had a fun series on the definitions of 26 different mathematical terms, one for each letter of the alphabet. Here are the words from K to O:
K is for knot, a seemingly abstract area of mathematics that has surprising applications in biology.
L is for locus, a word that’s unfamiliar to today’s math majors but was hammered into my head when I was a student. I distinctly remember learning the definition of an ellipse as the locus of points so that the sum of the distances from two fixed points to that point is a constant.
M is for measure, as in “measure theory” behind Lebesgue integration. There’s also a nice discussion of the paradoxical Cantor set that has dimension .
N is for n-tuple, of which the most common type is a vector in .
O is for orthogonal, a synonym for perpendicular.