Articles of symbols

How can I produce the symbols representing sign conventions for forces and moments in mechanical equilibrium equations?

Engineering texts often use a straight or curved arrow paired with a “plus” sign to indicate the sign convention for forces and moments at the beginning of an equilibrium equation. For example, see the below image from an engineering textbook, where I have circled in red three of these symbols: My experience has been that […]

How to make this symbol (topology)?

Is it possible to produce this symbol? I tried Detexify, but nothing. Thanks

Bar over/under integral symbol

I try to typeset bar over/under integral symbol with \overline\int,\underline\int But the line looks too long, any solution?

Import empty set from Computer Modern font

I use \mathabx package because I like much more their mathematical symbols. Except for the empty set symbol ($\emptyset$ in LaTeX). I would like to changed it by the standard Computer Modern symbol. But I don’t know how to do it. There are some examples to import particular symbols, but I don’t undertsand them. For […]

How to add an item symbol before the caption

how to add the blacksquare before the caption in LaTeX? just like the itemize, but at the caption 1. Introduction

Is there an upside-down version of the symbol for $\pi$?

I have been looking at the Comprehensive list of Latex symbols, but can not seem to find an upside-down letter $\pi$. Is there a package that I need to add so that a command like $\copi$ or $\invpi$ or should one create such a symbol manually?

Minus-like sign with stuff on top

I want to create an operator that works like a minus sign (including the spacing), but has the characters res on top (in \textrm mode). The length of the minus sign should be adjusted to look like underlining the res characters, and it needs to work in a subscript. Currently I am using \newcommand{\residue}[2]{#1\overset{\text{res}}{\relbar\mathrel{\mkern-3mu}\relbar\rule{0pt}{2pt}}#2} which […]

bar through letter in mathmode

Hi do you know how I can produce this symbol in latex? Only the bar through the letter i need I know the rest. And i need something that works on math mode for sure. I tried using \sout with ulem package combined with \ddots but didn’t work. \documentclass[12pt]{article} \usepackage[margin=1in]{geometry} \usepackage{amsmath,amsthm,amssymb,empheq,caption} \usepackage{graphicx} \usepackage{siunitx} \usepackage{mathtools} \usepackage{float} […]

Making a variable-sized surd?

Is there a get around to make $\surd$ variable-sized via standard AMS package? For example, I would like $\surd \frac{a}{b}$ to look like $\sqrt{\frac{a}{b}}$ with the elongated left line but no overline on $\frac{a}{b}$.

Inline boxes: alternative to pifont's non-filled-but-shadowed box?

I often need to draw inline boxes in specific rgb-colors. I really like how easy to use the pifont package is for this purpose. But just the filled boxes look as desired. The shadowish look of the other boxes does not really fit. Is there any easy alternative to get “empty boxes” with the same […]