ToLowerCase

ToLowerCase[string]
yields a string in which all letters have been converted to lowercase.

The variant uppercase character \[CurlyCapitalUpsilon] is converted to its non-variant lowercase form.

Convert characters in a string to lowercase:

Out[1]=

Everything other than uppercase letters is left unchanged:

ToLowerCase threads itself element-wise over lists:

Accented characters:

Greek letters:

Script letters:

For the character

, ToUpperCase is not the inverse of ToLowerCase:

Check that

is the only character for which ToUpperCase is not the inverse of ToLowerCase:

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