#punctuationlibrary

Day 92/100: The Pipe/Vertical Bar. The vertical bar ( | ) is a computer character and glyph with various uses in mathematics, computing, and typography. It has many names, often related to particular meanings: Sheffer stroke (in logic), verti-bar, vbar, stick, broken bar, vertical line, vertical slash, bar, glidus, obelisk, or pipe. A pipe is an inter-process communication mechanism originating in Unix, which allows the output (standard out and, optionally, standard error) of one process to be used as input (standard in) to another. In this way, a series of commands can be "piped" together, giving users the ability to quickly perform complex multi-stage processing from the command line or as part of a Unix shell script ("bash file"). In most Unix shells (command interpreters), this is represented by the vertical bar character. The vertical bar is also used as a mathematical symbol in numerous ways & in notation in quantum physics. (Fancy!) [Wooden ruler on white paper] #100daysofthepunctuationproject #the100dayproject #gm100dayproject #100days #punctuation #thepunctuationproject #punctuationsymbols #punctuationdesign #punctuationlibrary #creativerepresentation #creativehabit #dailyhabit #ruler #pipe #verticalpipe #shefferstroke #logic #mathematicalsymbols #mathematicalpunctuation #quantumphysics #programming #programmingsymbols #green #unix #obelisk #glyph #typography #typographicalsymbols

Day 77/100: The infinity symbol ∞. Sometimes called the lemniscate, it is a mathematical symbol representing the concept of infinity. (Oh how we all wish for an infinity of Sundays, or maybe Saturdays or just...youth? Life? Summer? Fun times?) In old times when most typesetting was by hand with lead type, the infinity symbol was easily made by typesetting an 8 rotated 90 degrees. In mathematics, the infinity symbol is used more often to represent a potential infinity, rather than to represent an actually infinite quantity. The infinity sign is conventionally interpreted as meaning that the variable grows arbitrarily large (towards infinity) rather than actually taking an infinite value. In areas other than mathematics, the infinity symbol may take on other related meanings; for instance, it has been used in bookbinding to indicate that a book is printed on acid-free paper and will therefore be long-lasting. In modern mysticism, the infinity symbol has become identified with a variation of the ouroboros, an ancient image of a snake eating its own tail that has also come to symbolize the infinite, and the ouroboros is sometimes drawn in figure-eight form to reflect this identification, rather than in its more traditional circular form. The well known shape and meaning of the infinity symbol have also made it a common typographic element of graphic design. [Blue ink on watercolour paper. I love seeing the grain of the paper!] #100daysofthepunctuationproject #100days #the100dayproject #gm100dayproject #punctuationdesign #punctuationlibrary #punctuationsymbols #mathematicalsymbols #symbols #infinity #toinfinity #infinitysymbol #lemniscate #typesetting #figureofeight #theconceptofinfinity #ouroboros #watercolour #watercolourpaper #blueink #ink #bookbinding