To mark with an asterisk. Usage Note: The phonological phenomenon of metathesis involves the transposition of sounds or syllables in a word. Metathesis is responsible for the common rendering of ask as aks or ax. (This issue is discussed comprehensively at ax.) Similarly, one sometimes hears asterisk pronounced with the sk transposed to produce a (ks) sound, as though the word were spelled asterix or astericks.
Given an Euler brick with edges (a, b, c), the triple (bc, ac, ab) constitutes an Euler brick as well. Perfect cuboid Template:Unsolved A perfect cuboid (also called a perfect box) is an Euler brick whose body diagonal is also an integer.
Euler Number. Introduction to the Euler Number used in fluid mechanics. The Euler Number is a dimensionless value used for analyzing fluid flow dynamics problems where the pressure difference between two points is important. The Euler Number can be interpreted as a measure of the ratio of the pressure forces to the inertial forces.