For 10 points, name this concept that when applied to the length of a list, implies that it never ends.
In physics, renormalization is used to deal with sort of number. The tape on a Turing Machine is of this length. The cardinalities of sets of this type are given by aleph numbers. Euclid proved that there are this many primes. A population of this size is assumed by Hardy-Weinberg equilibrium. The symbol for this concept looks like a sideways eight. Pi has this many digits. For 10 points, name this concept that when applied to the length of a list, implies that it never ends.
In physics, renormalization is used to deal with sort of number.
{infinite} [or {infinity}; or {non}-{finite}]