The entry on "Notation" from the Edinburgh Encyclopedia, contributed by Charles Babbage. He is not in favour of omitting brackets around trig functions, or the convention of putting the subscript for powers of trig functions after the function name, instead of after the argument.

@book{CharlesBabbageNotation,
title = {Charles Babbage's thoughts on notation},
abstract = {The entry on "Notation" from the Edinburgh Encyclopedia, contributed by Charles Babbage. He is not in favour of omitting brackets around trig functions, or the convention of putting the subscript for powers of trig functions after the function name, instead of after the argument.},
url = {https://books.google.co.uk/books?id=kQ8bAQAAMAAJ{\&}pg=PA527{\&}lpg=PA527{\&}dq={\%}22although+a+definition+cannot+be+false+it+may+be+improper{\%}22{\&}source=bl{\&}ots=sUZWWIK67O{\&}sig=MbfxfgGf2LrMYLEgg340SjW8t-Y{\&}hl=en{\&}sa=X{\&}ved=2ahUKEwjx1pK0hqHdAhWCW8AKHfDDCR8Q6AEwAHoECAAQAQ{\#}v=onepage{\&}q={\%}22although{\%}20a{\%}20definition{\%}20cannot{\%}20be{\%}20false{\%}20it{\%}20may{\%}20be{\%}20improper{\%}22{\&}f=false},
year = 1832,
author = {Charles Babbage},
comment = {},
urldate = {2018-09-04},
collections = {Notation and conventions}
}