8 is a horizontal "∞". This symbol is a mathematical symbol, which is pronounced "infinity". Add a minus sign to read negative infinity and a plus sign to read positive infinity.

Mobius belt is usually regarded as the creative source of infinite symbols, because if someone stands on the surface of a huge Mobius belt and walks along the "road" he can see, he will never stop.

But this is an untrue rumor, because "∞" was invented before Mobius belt. ?

Arixtote (384-322 BC), an ancient Greek philosopher, believed that infinity could exist, because finite quantities were infinitely separable, but infinity could not be achieved.

/kloc-in the 20th century, a great Indian mathematician, Bascara, appeared, and his concept was close to that of theory. The symbol of "infinity" by putting 8 horizontally was first used in JohnWallis' paper Arithmetic Infinity (published in 1655).