Infinite symbol (∞), infinite or infinite, means "unbounded". It has different concepts in theology, philosophy, mathematics and daily life. Usually the use of this word does not involve its more professional definition.

In mathematics, two equations with infinite symbols are occasionally used, namely: ∞ =∞+ 1, ∞ =∞× 1.

A formula in which positive values represent infinity. There is no specific number, but positive infinity means a value greater than any number. The symbol is+∞, so is the symbol of negative infinity-∞.

Extended data

When describing an interval, only the upper bound is (-∞, x) (x ∈ r); Only the lower bound is (x, +∞) (x ∈ r); If there is neither upper limit nor lower limit, it is (-∞,+∞).

In advanced mathematics, it is stipulated that x is a real number, when x >；; 0，x÷0 =+∞； When x

Addition, subtraction, multiplication, division, multiplication and square root of +∞ and positive real numbers always result in +∞; -∞ and positive real numbers are added, subtracted, multiplied, divided, multiplied and squared, and the result is always-∞. (0 ×∞ meaningless)

+∞ can be expressed as x+ 1 in a sense, because x is a symbol representing any real number, infinity must be greater than any real number, and the paradox of 0.999 ... 999 (infinite cycle of 0.9) = 1 shows that infinity may involve a higher level (because the infinite cycle of 0.9 is less than 1, but the decimal is equal to.