# Francois Viet

Date of Birth: 1540

Age: 63

Place of birth: Fontaine le Comte

Citizenship: France

**Background**

Wyeth was the first characters denote not only unknown, but also the value of the data. Thus he was able to introduce into the science of the great thought of the possibility to carry out algebraic transformations of symbols, t. E. To introduce the concept of a mathematical formula. In this way he made a decisive contribution to the creation of letter algebra than completed the development of mathematics of the Renaissance and prepared the ground for the emergence of the results of Fermat, Descartes, Newton

Francois Viete was born in 1540 in southern France in a small town Fantene-le-Comte, which is 60 km from La Rochelle, the former stronghold in the time of the French Protestants, the Huguenots. Most of his life he lived next to the prominent leaders of the movement, although he remained a Catholic. It seems that religious differences are not worried about the scientist.

Wyeth`s father was a prosecutor. By tradition, the son of his father`s chosen profession and became a lawyer, graduated from the University of Poitiers. In 1560, twenty lawyer began his career in his hometown, but after three years he moved to the illustrious family of Huguenot de Parthenay. He became secretary of the house owner and teacher of his daughter Catherine twelve. It aroused in teaching young lawyers interested in mathematics.

When the pupil has grown and married, Wyeth has not left her family and moved with her to Paris, where it was easier to learn about the achievements of the leading mathematicians of Europe. With some Wyeth scientists met in person. So he spoke with a prominent professor at the Sorbonne Ramus, with the largest Italian mathematician Rafael Bombelli conducted a friendly correspondence.

In 1671, Wyeth has passed the civil service, becoming the adviser of the Parliament, and then adviser to the French King Henry III.

On the night of August 24, 1672 in Paris there was a massacre of Huguenots Catholics, the so-called Massacre of St. Bartholomew. That night, along with a number of Huguenots were killed the husband of Catherine de Parthenay and mathematician Ramus. In France, the civil war began. A few years later Catherine de Parthenay remarried. This time, it was the chosen one of the prominent leaders of the Huguenots - the Prince de Rohan. In his petition in 1580, Henry III appointed Vieta an important state post master of requests, which gave the right to monitor, on behalf of the King of execution of orders in the country and to suspend the orders of the big feudal lords.

Being in the public service, Wyeth remained a scientist. He famously managed to decipher the code of the intercepted correspondence of the King of Spain with his representatives in the Netherlands, so that the King of France was fully aware of the actions of their opponents. The code was difficult to contain up to 600 different characters, which are periodically changed. The Spaniards could not believe that he deciphered and accused the French king in relations with the evil spirit.

By this time include Wyeth`s contemporaries about his enormous capacity for work. Being interested in something, the scientist could work for three days without sleep.

In 1584 at the insistence of Guise Vieta removed from office and expelled from Paris. It was at this period is the peak of his creativity. Having found an unexpected peace and relaxation, the scientist set out to establish a comprehensive mathematics allows us to solve any problems. He had the conviction that "there should be a common, yet unknown science, embracing and ingenious inventions latest algebraists, and deep geometric survey of the ancient."

Wyeth presented the program of their studies and treatises listed, united by a common idea and written in mathematical language a new literal algebra, published in 1591 the famous "Introduction to the analytic art". Transfer went in the order in which these works have been published, to create a single entity - a new direction in science. Unfortunately, a whole failed. Tracts were published in a completely random order, and many saw the light only after the death of Wyeth. One of the treatise never found. However, the main purpose of the scientist great success started the transformation of the algebra into a powerful mathematical calculus. The name "algebra" Wyeth in the works to replace the words "analytic art". He wrote in a letter to de Parthenay "All mathematicians know that under the algebra and almukabala ... incomparable treasure hidden, but were unable to find them. The tasks that they considered the most difficult, it is easy to solve with the help of dozens of our art ... "

The basis of the approach called Viet types of logistics. Following the example of the ancients, it is a clear distinction between numbers, quantities and relationships, putting them in a certain system of "species". This system includes, for example, variables, their roots, squares, cubes, squares, squares, etc., as well as many scalar, which correspond to the real dimensions -.. Length, area or volume. For these types of Wyeth gave special symbols denoting them in capital letters of the alphabet. For unknown quantities used vowels for variables - consonants.

Wyeth has shown that by operating with symbols, you can get the result, which is applicable to any suitable values, ie. E. To solve the problem in a general way. This marked the beginning of a turning point in the development of algebra was made possible literal calculus.

Demonstrating the power of his method, the scientist has led in his work stock formulas that could be used to solve specific problems. From the signs of action, he used the "+" and "-" a sign of the radical and the horizontal line for the division. The work is meant the word