There are many such schemes of ordinal notations, including schemes by Wilhelm Ackermann, Heinz Bachmann, Wilfried Buchholz, Georg Cantor, Solomon Feferman, Gerhard Jäger, Isles, Pfeiffer, Wolfram Pohlers, Kurt Schütte, Gaisi Takeuti (called ordinal diagrams), Oswald Veblen.
Big O notation | Z notation | Reverse Polish notation | Whyte notation | Parts-per notation | Ordinal number | The final form of Braille's alphabet, according to Henri (1952). The decade diacritics are listed at left, and the supplementary letters are assigned to the appropriate decade at right. Characters are derived by combining the diacritic on the left with the basic letters at top. "(1)" indicates markers for musical and mathematical notation. Parentheses and quotation marks follow English Braille | that book's notation | Siegbahn notation | scientific pitch notation | Reverse Polish Notation | reverse Polish notation | quote notation | Portable Game Notation | Ordinal number (linguistics) | Infix notation | abuse of notation | Abstract Syntax Notation One | ABC notation |