The Surprisingly Short History Of The Plus Sign - Fast Company 06-23-2014 DESIGN The Surprisingly Short History Of The Plus Sign Before the 16th century, most math equations were written as metered verse Thank god for graphic-design-inclined mathematicians
Addition - Wikipedia Addition, usually denoted with the plus sign +, is one of the four basic operations of arithmetic, the other three being subtraction, multiplication, and division
List of typographical symbols and punctuation marks - Wikipedia Astronomical symbols – Symbols in astronomy Chemical symbol – Abbreviations used in chemistry Chinese punctuation – Punctuation used with Chinese characters Currency symbol – Symbol used to represent a monetary currency's name Diacritic – Modifier mark added to a letter (accent marks etc ) Hebrew punctuation – Punctuation conventions of the Hebrew language over time Glossary of