## The number three six six

Published May 01, 2018

A leap year is associated with a lot of superstitions. But the very the number three six six (366), which means the number of days in such a year, usually does not cause much interest. However, if we look at the number three six six from the point of view of some relations of natural and geometric magnitudes (we also agree with the decimal subdivisions...

## Dimension space

Published May 01, 2018

It is useful to dwell in more detail on Wells' peculiar understanding of the time, as the fourth dimension space. To understand this, we will move mentally from the familiar three dimensions space into the world of two dimensions. Such a two-dimensional space, having a length and width, but not at all having a thickness...

## Root extraction

Published May 01, 2018

The need for action, exponentiation, and root extraction was caused by a practical need. Since ancient times, people have solved the problem: "find the length of the side of the square, if its area is known". Another 4000 years ago, the Babylonian scholars compiled tables of squares of numbers. In doing so, they were able to find approximate values for extracting the square root from any integer...

## Equality sign

Published May 01, 2018

Equality sign in mathematics and other exact sciences write between two identical in size expressions. The first to use the sign of equality was Diophantus. Equality, he denoted by the letter i (from the Greek isos - equal). In ancient and medieval mathematics, equality was designated verbally (for example, estegale). The sign of equality in contemporary form was created by the mathematician...

## Al-Kashi's algorithm

Published May 01, 2018

When carrying out calculations in ancient times, they used various "rules" that simplified these calculations. They were the first algorithms. One of these is the al-Kashi’s algorithm. This algorithm was proposed at the very beginning of the 15th century, although similar procedures were also encountered in the Indian mathematical treatise...

## Number pi

Published May 01, 2018

Number pi - one of the most known numbers used in the natural sciences (mathematics, physics, engineering, etc.), for many millennia fascinated the minds of great thinkers and mathematicians. At school, we realized that the number pi is the ratio of the circumference to the diameter. William Jones (1675-1749) - English mathematician, the first designated it with a Greek letter...

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