Unlike the implied warranty of merchantability, the implied warranty of fitness does not contain a requirement that the seller be a merchant with respect to the goods sold. It merely requires that the seller possess knowledge and expertise on which the buyer may rely.
The symbol used by mathematicians to represent the ratio of a circle's circumference to its diameter is the lowercase Greek letter Ï, sometimes spelled out as pi. In English, Ï is pronounced as pie (/paÉª/ , paÉª).
There are two possibilities. First, math somehow underlies the physical world, generates it. Or second, math is a human description of how we describe certain regularities in nature, and because there is so much possible mathematics, some equations are bound to fit. As for the essence of mathematics, there are four possibilities.