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2

I propose this, based on tabularx: \documentclass[10pt]{letter} % 10pt font size default, 11pt and 12pt are also possible \usepackage{geometry} % Required for adjusting page dimensions %\longindentation=0pt % Un-commenting this line will push the closing "Sincerely," to the left of the page \usepackage[demo]{graphicx} \usepackage[export]{adjustbox} \...


5

Notation such as “ΔA” or “Δx” has been used for a few centuries with no problem of interpretation (perhaps by newbie students, not by professional mathematicians). If you want to be original ;-), you can do it like \documentclass{article} \makeatletter \newcommand{\SDelta}{{\mathpalette\center@smaller{\Delta}}} \newcommand{\center@smaller}[2]{% \...


2

Something of this type? I hope to have understood your request. \documentclass[a4paper,12pt]{article} \usepackage{amssymb} \begin{document} \raisebox{.4ex}{\tiny $\Delta$}A \end{document} If you want to change the \Delta symbol with a triangle symbol similar to \Delta, my suggestion is to use MnSymbol package that you can find in the pag. 68, Table 134: ...


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