Here I present: Raul Rajas, “The Language of Mathematics: The Stories Behind the Symbols“, 2018.
Numeral is a syntax item. Parts of speech (syntax) are: noun, pronoun, verb, adverb, article, adjective, preposition, interjection, conjunction & numeral. Writing is invention that requires numerals in language on paper. Addition, subtraction, multiplication, division requires numeral symbols. Calculations in Latin letter & Braille‘ require numeral symbols for computation of answers.
Mathematician Raul Rajas, “The Language of Mathematics: The Stories Behind the Symbols“, 2018 is stories behind the mathematical symbols (including numerals) for the general reader.
