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's Identity. Euler's identity is the famous mathematical equation e^(i*pi) + 1 = 0 where e is Euler's number, approximately equal to 2.71828, i is the imaginary number where i^2 = -1, and pi is the ratio of a circle's circumference to the circle's diameter approximately equal to 3.14.