以下是我试图在背面编译的代码：
\begin{tikzcd}[row sep=huge]
H_{\bullet}(\Sigma X)
\arrow[r,"c_*"]
\arrow[dr,bend right,"\Delta"'] &
H_{\bullet}(\Sigma X\vee\Sigma X)
\arrow[r,"(f\vee g)_*"]
\arrow[d,shift right=0.5em,"j?"'] &
H_{\bullet}(Y) \\
& H_{\bullet}(\Sigma X)\oplus H_{\bullet}(\Sigma X)
\arrow[u,shift right=0.5em,"i_{1*}\oplus i_{2*}"']
\arrow[ur,bend right,"f_*\oplus g_*"']
\end{tikzcd}
但每次编译时都会出现编译错误，其中一些错误是：
1- 此部分的错误 $ \arrow[r,"c_“]$ 是以下错误：包 pgfkeys 错误：我不知道密钥 '”c_\par ' 我将忽略它。也许你拼错了。
2- 此部分 $ \arrow[dr,bend right,"\Delta"']$ 的错误是以下错误：包 xcolor 错误：未定义颜色“\Delta \T_1 \textquotedblleft'。”
3- 此部分的错误 $\arrow[r,"(f\vee g)*"]$ 是以下错误：包 pgfkeys 错误：我不知道密钥“”（f\vee g）*\par ' 我将忽略它。也许你拼错了。
4- 此部分 $\arrow[d,shift right=0.5em,"j?”']$ 的错误如下：包 xcolor 错误：未定义颜色“j? \T_1 \textquotedblleft'。”
这是我从一开始的文档：
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
% Sprache (neue deutsche Rechtschreibung)
\usepackage[ngerman]{babel}
% Mathematik
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{tikz-cd}
\usepackage{mathtools}
\usepackage{commath}
\usepackage{bbm}
\usepackage[margin= 1 in]{geometry}
%\addtolength{\oddsidemargin}{-.875in}
\addtolength{\evensidemargin}{-.575in}
%\addtolength{\textwidth}{1.75in}
\addtolength{\topmargin}{-.275in}
\addtolength{\textheight}{- .1 in}
\title{M T}
\author{MA }
\date{April 2020}
\begin{document}
\maketitle
\section{If we have the following}
**Also the following code compiles but without any maps on the arrows:**
\[
\begin{tikzcd}[row sep=3em]
& H_{\bullet}(Y)
& \\
& H_{\bullet}(\Sigma X\vee \Sigma X)
\arrow[u,"(f\vee g)_*"]
& \\
H_{\bullet}(\Sigma X)
\arrow[uur,out=80,in=190,"f_*"]
\arrow[r]
\arrow[ur,"i_{1*}"]
&
H_{\bullet}(\Sigma X)\times H_{\bullet}(\Sigma X)
\arrow[u,"i_{1*}\oplus i_{2*}"]
&
H_{\bullet}(\Sigma X)
\arrow[l]
\arrow[uul,out=100,in=-10,"g_*"']
\arrow[ul,"i_{2*}"']
\\
\end{tikzcd}
\]
任何有助于解决这些问题的帮助都将不胜感激！
提前致谢。
答案1
您需要添加
\usetikzlibrary{babel}
文档序言因为\usepackage[ngerman]{babel}改变一些符号的含义tikzpicture。通过添加 Ti 进行更正/恢复钾Z 库babel。MWE 的意思是：
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
% Sprache (neue deutsche Rechtschreibung)
\usepackage[ngerman]{babel}
% Mathematik
\usepackage{mathtools, amssymb}
\usepackage{bbm}
\usepackage{commath}
% diagrams
\usepackage{tikz-cd}
\usetikzlibrary{babel} % <-----
\usepackage[margin= 1 in]{geometry}
%\addtolength{\oddsidemargin}{-.875in}
\addtolength{\evensidemargin}{-.575in}
%\addtolength{\textwidth}{1.75in}
\addtolength{\topmargin}{-.275in}
\addtolength{\textheight}{- .1 in}
\title{M T}
\author{MA }
\date{April 2020}
\begin{document}
\maketitle
\section{If we have the following}
**Also the following code compiles but without any maps on the arrows:**
\[
\begin{tikzcd}[row sep=3em]
& H_{\bullet}(Y)
& \\
& H_{\bullet}(\Sigma X\vee \Sigma X)
\arrow[u,"(f\vee g)_{*}"]
& \\
H_{\bullet}(\Sigma X)
\arrow[uur,out=80,in=190,"f_*"]
\arrow[r]
\arrow[ur,"i_{1*}"]
& H_{\bullet}(\Sigma X)\times H_{\bullet}(\Sigma X)
\arrow[u,"i_{1*}\oplus i_{2*}"]
& H_{\bullet}(\Sigma X)
\arrow[l]
\arrow[uul,out=100,in=-10,"g_*"']
\arrow[ul,"i_{2*}"'] \\
\end{tikzcd}
\]
\end{document}
