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.... This led to an unfortunate proliferation of mutually incompatible ad hoc formats and much head-scratching. This page attempts to document the different existing formats, their rationales and history, for the terminally curious and those unfortu ...

[[File:Aspect Ratio Chart.svg|thumb|Common aspect ratios used in film and display ...(1.{{overline|3}}:1),{{Efn|[[Repeating decimal#Notation|Repeating decimal notation]]}} the universal video format of the 20th century, and [[16:9]] (1.{{overl ...

...//www.fordhamprep.org/gcurran/sho/sho/lessons/lesson35.htm|title=Elemental Notation and Isotopes|publisher=Science Help Online|access-date=2008-08-27|url-statu ...t, whose methods involve logical reasoning and usually the use of symbolic notation, and which includes geometry, arithmetic, algebra, and analysis. |archive-u ...