在同一行创建两个向量

Question

我有两个向量 y 和 b，一个在另一个之上。我希望将这两个向量放在同一行，以便节省文档中的页面。

        \begin{align*}
            y = \begin{pmatrix}
                a_{0}\\ 
                a_{1}\\ 
                a_{2}\\ 
                \vdots \\ 
                a_{p}\\
                c_{1}\\
                c_{2}\\
                \vdots \\
                c_{m}\\
                \end{pmatrix} \in \mathbb{R}^{(m+p+1)}
    \end{align*}

    \begin{align*}
            b = \begin{pmatrix}
                f_{0}\\ 
                f_{1}\\ 
                f_{2}\\ 
                \vdots \\ 
                f_{n}\\
                \end{pmatrix} \in \mathbb{R}^{(n+1)}
    \end{align*}

Answer 1

您应该使用单一equation*环境（使用align 仅有的当涉及对齐时，正如已经建议的那样。

不过，还有其他节省空间的选择。

\documentclass{article}
\usepackage{amsmath,amssymb}

\begin{document}


\begin{equation*}
  y =
  \begin{pmatrix}
  a_{0}\\ 
  a_{1}\\ 
  a_{2}\\ 
  \vdots \\ 
  a_{p}\\
  c_{1}\\
  c_{2}\\
  \vdots \\
  c_{m}
  \end{pmatrix} \in \mathbb{R}^{(m+p+1)}
\quad\text{and}\quad
  b =
  \begin{pmatrix}
  f_{0}\\ 
  f_{1}\\ 
  f_{2}\\ 
  \vdots \\ 
  f_{n}\\
  \end{pmatrix} \in \mathbb{R}^{(n+1)}
\end{equation*}
But, if you really want to save space, you can use an alignment
\begin{align*}
  y &=
  \begin{pmatrix}
  a_{0} & 
  a_{1} & 
  a_{2} & 
  \cdots & 
  a_{p} &
  c_{1} &
  c_{2} &
  \cdots &
  c_{m}
  \end{pmatrix}^{T} \in \mathbb{R}^{(m+p+1)}
\\
  b &=
  \begin{pmatrix}
  f_{0} & 
  f_{1} & 
  f_{2} & 
  \cdots & 
  f_{n} 
  \end{pmatrix}^T \in \mathbb{R}^{(n+1)}
\end{align*}
or center both vectors
\begin{gather*}
  y =
  \begin{pmatrix}
  a_{0} & 
  a_{1} & 
  a_{2} & 
  \cdots & 
  a_{p} &
  c_{1} &
  c_{2} &
  \cdots &
  c_{m}
  \end{pmatrix}^{T} \in \mathbb{R}^{(m+p+1)}
\\
  b =
  \begin{pmatrix}
  f_{0} & 
  f_{1} & 
  f_{2} & 
  \cdots & 
  f_{n} 
  \end{pmatrix}^T \in \mathbb{R}^{(n+1)}
\end{gather*}

\end{document}

Answer 2

像这样吗？

\documentclass[a4paper,12pt]{article}
\usepackage{amsmath,amssymb}


\begin{document}
\begin{equation*}
            \mathbf{y} = \begin{pmatrix}
                a_{0}\\ 
                a_{1}\\ 
                a_{2}\\ 
                \vdots \\ 
                a_{p}\\
                c_{1}\\
                c_{2}\\
                \vdots \\
                c_{m}\\
                \end{pmatrix} \in \mathbb{R}^{(m+p+1)}, \qquad 
            \mathbf{b} = \begin{pmatrix}
                f_{0}\\ 
                f_{1}\\ 
                f_{2}\\ 
                \vdots \\ 
                f_{n}\\
                \end{pmatrix} \in \mathbb{R}^{(n+1)}
    \end{equation*}
\end{document}