PIERRE DE FERMAT He was born on 20th August, 1601 in Beaumont of Lomage, France. His father, Dominique Fermat, gave to him a good education. He study laws and he was judge. At the same time he learned languages, wrote poetry and he investigated in the field of the maths. He wrote his mathematical discoveries in the margins of the books and in letters to his friends. He discovered the numbers of Fermat, the friendly numbers and the perfect numbers. He doesn’t publish in life but his son Clément Samuel announced all maths discoveries of his father. AN INVENT REVOLUTIONARY Manuel Jalón creates the mop in 1956. Jalón invents the mop, in order that cleaning was so uncomfortable, the cleaners rejected his offer for fear of being fire Some merchants saw in her revolutionary invent. After a revolutionary campaign and the apparition of the plastic, the mop got adapt to our lives.