Infinity

Infinity as defined in mathematics refers to a number which has no greater number. The number ten has a higher number, because:

$11>10$

But "infinity" by definition is higher than any particular number you specify. Is a million the highest number? No, because

$1,000,000+1=1,000,001$

Infinity therefore is not an actual number but something which is approached as a limit. For instance:

$1/x$ → 0 as x → ∞

See also

• division by zero