Other constructions that were proved impossible include doubling the cube and squaring the circle. Squaring the circle is a problem proposed by ancient geometers. Examples are squaring the values or taking logarithms. He also wrote on squaring the circle in his mathematical treatises. Sean defeats the Zoanoids before squaring off against Lisker. One method of squaring the circle, due to Archimedes, makes use of an Archimedean spiral. The longship design maximized passenger capacity by squaring the bow and rearranging hallways. Squaring and square-rooting is done elementwise. Regarded as multiplication, this operation amounts to squaring. Each battle consists of Lex squaring off against a given enemy. The adjective which corresponds to squaring is "quadratic". "Squaring the Circle" (1984) all concern themes of censorship, rights abuses, and state repression. A very simple example of a reduction is from "multiplication" to "squaring". Here is a particular example, the difference quotient of the squaring function. The squaring is critical to reduce the complexity with negative signs.