Rithmus (from Greek αριθμός) is a numeral set created by Jackson. It is inspired by Greek numerals, a numeral set where each place value under 1,000 has its own symbol, and placeholders are omitted. For example, 3, 30, and 300 all have their own symbols, but the number 333 is written with the symbol for 300, then the symbol for 30, and then the symbol for 3. However, the number 303 would be written as the symbol for 300, and then the symbol for 3. The number 0 only gets its own symbol by itself; it doesn't appear in 10, 504, or 20736. Greek numerals can only be used for base-10; however, Rithmus can be used for any number base from base-2 to base-12, because base-12 is way better than base-10. Because Greek numerals use the same symbols as the letters of the Greek alphabet, it requires 33 symbols to assign for each place value, plus one additional value for the number 0. However, the ISO Basic Latin Alphabet only has 26 letters. Instead, custom symbols have been implemented to represent these values. The symbols are mainly derived from the Greek alphabet, along with some influence from Latin, Cyrillic, and Armenian. Due to Greek numerals being unicameral, lowercase letters have been added to represent negative numbers. The unicase letter ʔ has been used to represent the number 0, due to it being the only number to not be positive nor negative. Because the Greek numerals have a special type of punctuation to multiply a number by 1,000, an overbar can be added to a symbol to multiply it by 1,000, and an underbar can be used to divide it by 1,000.
For lowercase symbols, they have the same names as the uppercase symbols, with "negative" at the start, just like in math. Names of each symbol: ʔ: Alf А: Az Ƃ: Buck В: Ved Ƨ: Glag Ƌ: Dobbs Е: Est Ɛ: Et Ʒ: Jiff S: Zell З: Zem Ƞ: Eesh Ι: Yee К: Kack Λ: Lud М: Miss Ν: Nash О: On Ɔ: Ot П: Poke Р: Reese С: Sloff Т: Tword Ỿ: Ook Ф: Fert Х: Kerr Վ: Sai Կ: Cherf Σ: Shah Ɯ: Shat Ъ: Air Ь: Yor Υ: Greg Ζ: Zeh
