Well there are at least a half-dozen valid unaccented capital a characters in Unicode, but there is only one LATIN CAPITAL LETTER A, which sits at U+0041. You

Well there are at least a half-dozen valid unaccented capital a characters in Unicode, but there is only one LATIN CAPITAL LETTER A, which sits at U+0041. You are correct that there are many ways to encode U+0041 in a stream of bytes.