Number

On the ninth night, Robert had dreamed of being on the bed with influenza. There was a digital devil around him. Digital Devil teaches Robert about natural numbers, the digital devil is called a rare feature of the garden's type number, infinite and infinite series. Robert discovered himself in the Arctic, digital devils introduced various aspects of Euclidean geometry such as irrational numbers (irrational number) and vertices (dots) and sides (lines). On the evening of the eleventh day, Robert expressed considerable interest in mathematics, but raised a question about its relevance Digital devils introduced the concept of mathematical proof. . On the night of the 12th, Robert and Number Devil received an invitation to number haven (Teplotaxl called number devil) as Robert and number devils time was completed.

In 12 dreams, the digital devil teaches Robert's mathematical principle. On the first night, Robert appeared in a huge world with Number Devil and introduced the first place. Next night, the devil of numbers appeared in a forest shaped like "1", explaining the necessity of zero figures, negative numbers, and introduced a jump. On the third night, the numbers devil took Robert to the cave and revealed the way that the main figure (prime) can only be separated by men without themselves and the rest. Later on the evening of the fourth day, the devil of figures taught Robert about Rutabagas. This is another fictitious term representing the square root at the beach.