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为什么几何包弄乱了我的边距？

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为什么几何包弄乱了我的边距？

我想编写一份尽可能利用页面空间的文档。我使用的代码如下（免责声明：我取自这里)：

\documentclass[12pt, oneside, a4paper]{memoir}

\usepackage{layout}
\usepackage{showframe}

%\usepackage[a4paper]{geometry}

\usepackage{amssymb, amsfonts, amsthm}
\newtheorem{problem}{Problem}

\begin{document}
\title{Sample Document}
\author{John Doe}
\maketitle

\layout{}

Here is some sample text to show you what LaTeX does. 

To start a new paragraph, you need to leave a line of white space in your tex file.

To include math, you have two options. The first is called ``in line,'' and you do this by putting your math between two dollar signs (\$). For example, Fermat's Little Theorem tells us that if $p$ is a prime and $a$ is an integer such that $p \nmid a$, then $a^{p-1} \equiv 1 \pmod{p}$. Note that the exponent on $a$ has to go in braces (in the tex file). 

But if you really want an equation (or congruence) to stand out, then you ``display'' the math. It looks like this:
\[
    a^{p-1} \equiv 1 \pmod{p}.
\]
Nice, right?

Finally, we can make things look really nice for homeworks as follows:

\begin{problem}
    Let $X$ and $Y$ be blah blah blah \ldots
\end{problem}

\begin{problem}
    Let $X$ and $Y$ be as in the previous problem. What is $Z$?
\end{problem}

Notice that LaTeX automatically numbers the problems for us. 

\end{document}

看起来不错，但侧面有很多未使用的纸张： 无几何形状

然而，一旦我取消注释调用几何包的行，边距就会变得混乱，尽管我甚至没有发出任何命令来改变它们。 几何学

我尝试查看一些资料，但他们没有提到发生这样的事情，所以我想了解为什么几何形状会如此表现。

此外，如果可能的话，请帮助正确获取代码，以尽可能减少未使用的纸张空间。

答案1

memoir有自己的定义页面布局的方法，最好不要使用geometry它。下面的 MWE 通过减少边距来增加文本块的大小。

% memgeomprob.tex  SE 562072

\documentclass[12pt, oneside, a4paper]{memoir}

\setlrmarginsandblock{0.8in}{*}{1.0} % set left/right margins to 0.8in
\setulmarginsandblock{1in}{*}{1.0}   % set upper/lower margins to 1in
\checkandfixthelayout

\usepackage{layout}
\usepackage{showframe}

%\usepackage[a4paper]{geometry}
%\usepackage{geometry}

\usepackage{amssymb, amsfonts, amsthm}
\newtheorem{problem}{Problem}

\begin{document}
\title{Sample Document}
\author{John Doe}
\maketitle

\layout{}

Here is some sample text to show you what LaTeX does. 

To start a new paragraph, you need to leave a line of white space in your tex file.

To include math, you have two options. The first is called ``in line,'' and you do this by putting your math between two dollar signs (\$). For example, Fermat's Little Theorem tells us that if $p$ is a prime and $a$ is an integer such that $p \nmid a$, then $a^{p-1} \equiv 1 \pmod{p}$. Note that the exponent on $a$ has to go in braces (in the tex file). 

But if you really want an equation (or congruence) to stand out, then you ``display'' the math. It looks like this:
\[
    a^{p-1} \equiv 1 \pmod{p}.
\]
Nice, right?

Finally, we can make things look really nice for homeworks as follows:

\begin{problem}
    Let $X$ and $Y$ be blah blah blah \ldots
\end{problem}

\begin{problem}
    Let $X$ and $Y$ be as in the previous problem. What is $Z$?
\end{problem}

Notice that LaTeX automatically numbers the problems for us. 

\end{document}

阅读手册（> texdoc memoir）以了解更多信息。

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