目前我的海报草稿如下：
\documentclass[a2]{sciposter}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{enumitem}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage{multicol}
\graphicspath{ {C:/Users/asus_user/Pictures/} }
\newtheorem{Def}{Definition}
\graphicspath{ {C:/Users/asus_user/Pictures/} }
\title{The Structure of Groups with Given Absolute Central Factor Group}
\institute
{Institute of Mathematical Sciences\\
University of Malaya\\
50603 Kuala Lumpur}
\email{[email protected]}
\rightlogo[1]{um}
\begin{document}
\conference{{\bf SJEM3380 Mathematical Science Project}, Semester 2 Session 2015/2016}
\maketitle
\begin{multicols}{3}
\section{Definition}
The following are definitions of main terms used in the project.
\begin{Def}
The \textbf{Frattini subgroup} of a group $G$, denoted by $\Phi(G)$ is the intersection of all subgroups $M\leq G$, where $M$ is maximal in $G$.
\end{Def}
\begin{Def}
A group $G$ is said to be \textbf{capable} if there exists a group $H$ such that $H/Z(H)\cong G$.
\end{Def}
\begin{Def}
A \textbf{autocommutator subgroup} is defined as
\begin{equation*}
K(G)=\langle g^{-1}g^\alpha:g\in G,\alpha\in \textrm{Aut}(G)\rangle
\end{equation*}
\end{Def}
\begin{Def}
The \textbf{absolute center} of autocommutator subgroup is defined as
\begin{equation*}
L(G)=\{g\in G:g^\alpha = g,\forall \alpha\in \textrm{Aut}(G)\}
\end{equation*}
\end{Def}
\section{Introduction}
In recent years much progress has been made in the study of groups whose central quotient groups are abelian. Such a group is an extension of an abelian group by an abelian group. The study of capable groups plays a central role in various group theoretical problems. \\
Baer \cite{Baer} was the first who studied the structure of capable groups in detail and classified all finite capable groups. He characterized those groups whose central contains a given abelian group and whose quotient group is isomorphic to preassigned abelian group .\\
\section{Objectives}
\section{Previous Results}
\bibliographystyle{plain}
\begin{thebibliography}{1}
\end{thebibliography}
\end{multicols}
\end{document}
然后，在定义 3 中，单词 A autocommutator subgroup 之间的间距被扩大了。我该如何关闭此效果？
答案1
默认的 LaTeX 对齐方式是完全对齐（文本填充行直到边缘，包括左侧和右侧）。宏\raggedright允许右侧边缘不平整。还有一个包可以ragged2e做到这一点，甚至更多，适合严重不平整的作者。对于您的情况，\raggedright可以仅添加到定义 3，以将其范围限制在该定义中。其他所有内容都将保持完全对齐：
\begin{Def}\raggedright
An \textbf{autocommutator subgroup} is defined as
\begin{equation*}
K(G)=\langle g^{-1}g^\alpha:g\in G,\alpha\in \textrm{Aut}(G)\rangle
\end{equation*}
\end{Def}
另一方面，可以添加\raggedright到文档的开头
\begin{document}
\raggedright
并且整个文档的右列将变得参差不齐：
“不规则”宏\raggedright和也分别以环境形式和\raggedleft出现。这些环境可用于将不规则范围限制在封闭的文本中。\begin{flushleft}...\end{flushleft}\begin{flushright}...\end{flushright}