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GLOSSARY 
There are different versions of the Number button: 
Algebraic numbers: root of polynomial coefficient; 
Mixed numbers: integer and decimal point. 
All integers: -natural numbers and zero. The set of integers Z0 (in Latin - “zohi”) is the 
first letter of the number. 
Friendly numbers: one pair of numbers equal to the sum of other divisors. 
Number e: The base of the natural logarithm of y is approximately 2.7182818 / 2845904. 
The designation of this number with the letter e was introduced by the Scottish mathematician J. 
Neher (1550-1617). 
Even numbers: integers up to 2. 
Numbers with the name: numbers 6 m (six places) 5 (five acres) together with the name of 
the unit of measure; 30 (three degrees); It is written in 20 cm2 (square centimeters). 
Irrational numbers: (lat. Irotsionolis - irrational) Numerical non-periodic infinite number of 
decimal places. The theory of irrational numbers was developed by the ancient Greek scientist K. 
Edovksom (e. 408-355). 
Multiples are numbers generated by multiplying the same multiplication. 
Negative numbers - numbers are real numbers to the left of the zero point. Negative 
numbers were invented by Chinese mathematicians in the third and third centuries BC. 
An integer is a number equal to the sum of all other divisors. 
Positive numbers - numbers are numbers to the right of the right axis. 

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Natural numbers are numbers used for counting. Many numbers are denoted by the letter N 
(Latin, naturalis - natural word). The term natural numbers was first proposed by the Roman 
scientist A. Boetsi (480-524). 
Pi is a number equal to the ratio of the length of the circle to the diameter. Its value is 
approximately 3.141592653589 ... and is indicated by the letter p ("Pi" in the Greek Premetron is 
the first word of the circle). This mark was first made by the English mathematician W. Johnson 
in 1706, and the work of the Russian and German mathematician L. Euler (1707-1783) was 
accepted by the general one after another (1736). 
Pythagorean numbers are three positive numbers x.y, z that satisfy the equation x2 + y2 = 
z2, for example: 32 + 42 = 52 or 62 + 82 = 102 
Rastinalson (Latin Ratio Ratio) All integer and decimal digits. The set of numbers is 
indicated by the letter Q (French word in quotation marks is the first word of the word). 
Number squared - the second level of the number is defined as the square of the number. 
This designation was made in 1630 by the French mathematician R. Decort (1596-1650). The 
term quadratic is French mathematician P. Romus (1515-1572). 
Numeric range extension - representing a number as a prime number. 
Negative numbers are two numbers that are multiples of which are equal. 
Odd numbers are integers that are not equally divided by two. 
Tronsindent's numbers are non-algedraic numbers. This can be seen as an infinite number 
of times. An example of this is p and e. 
Numbers - natural numbers that are both individually and separately. 
Fibonacci numbers - the first two numbers - are one and the same number, and each 
subsequent number is the number of the two previous elements. Italian mathematician Leonardo 
of Pisa (Fibonacci) (after about 1070-1208). Included this number in his book “On Accounts”, 
written in 1202. 
Double primes are two primes whose absolute value is two. 
Mutual numbers are natural numbers that do not have a single common integer. 
Opposite numbers are two real numbers with equal modules with opposite signs. 
Actual numbers are rational and negative numbers. A set of numbers is represented by the 
letter R (Latin realist is the first word of the word). Although actual numbers began in the 
sixteenth century, its final definition was given in the nineteenth century. 
All real numbers. An integer x is the largest integer not exceeding x. [x] is displayed. 
The fraction of a real number is the result of dividing an integer from a real number by 
{x}.