Finite strings from infinite alphabet
56233
Is the set of all strings with countably infinite length bijective to $[0,1]$?
93459
Number of permutations of unspecified length
34293
Homeomorphism between pairs of letters
128627
Algorithm to find next greater permutation of a given string
25576
Characterization of short exact sequences
65473
How can something finite become infinite?
116605
Generate list of all possible permutations of a string
53449
Probability brain teaser with infinite loop
80790
Python idiom to chain (flatten) an infinite iterable of finite iterables?
35855
Closed form for an infinite product
139828
Finitely Presented Modules and Exact Sequences
112491
Finding counterexamples for infinite series.
54761
Inverting the Cantor pairing function
31969
Partition of N into infinite number of infinite disjoint sets?
92677
Infinite algebraic extension of a finite field
73575
Number of pairs of strings satisfying the given condition
76725
Finding all length-n words on an alphabet that have a specified number of each letter