Mathematics questions

A quipu usually consisted of cotton or camelid fiber strings. The Inca people used them for collecting data and keeping records, monitoring tax obligations, properly collecting census records, calendrical information, and for military organization.

1+2+...+99+100 = 1+100+2+99+...+50+51 = 101+101+101+...+101 = 101*50 = 5050 It's a calculation method invented by Gauss.

It is unknown whether there is any odd perfect number, though various results have been obtained. In 1496, Jacques Lefèvre stated that Euclid's rule gives all perfect numbers,[18] thus implying that no odd perfect number exists. Euler stated: "Whether (...) there are any odd perfect numbers is a most difficult question". More recently, Carl Pomerance has presented a heuristic argument suggesting that indeed no odd perfect number should exist. All perfect numbers are also Ore's harmonic numbers, and it has been conjectured as well that there are no odd Ore's harmonic numbers other than 1.

The notation of mathematical power, to which we are accustomed, was introduced by Descartes, who first used this record in the work "Geometrie".

In analytic geometry, an asymptote of a curve is a line such that the distance between the curve and the line approaches zero as one or both of the x or y coordinates tends to infinity. In projective geometry and related contexts, an asymptote of a curve is a line which is tangent to the curve at a point at infinity.The word asymptote is derived from the Greek which means "not falling together".

The well known "plus" sign was first used as a symbol of addition by the French mathematician Nicole d'Oresme in the work he wrote in the years 1356-1361. He used the + sign as a conjunction meaning "and".

He used the symbol of the period Gottfried Wilhelm Leibniz for the first time in his letter to John Bernoulli, writing that he did not like to use the (commonly used) × sign because he was often confused with the x sign, which denotes the unknown in the equation.

6x6=36. And if so, then a further multiplication by six must leave the sixth in the last position. The subsequent powers of the six are 6, 36, 216, 1296, 7776, 46656 ...

2:1=2; 2+5=7; 7-7=0

Meno is a Socratic dialogue written by Plato. It appears to attempt to determine the definition of virtue, or arete, meaning virtue in general, rather than particular virtues, such as justice or temperance. The first part of the work is written in the Socratic dialectical style and Meno is reduced to confusion or aporia. In response to Meno's paradox, however, Socrates introduces positive ideas: the immortality of the soul, the theory of knowledge as recollection.