General ⇒ How do I modify the equation serial number and its caption

[akira32]

How do I modify the equation serial number and its caption?
Now the equation show the serial number as (7.1).
But I want the string of the caption of the equation as (Eq7.1).
How do I modify the command of equation?

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Eq\ref{eq:equation_cost_time1}

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\begin{equation}
T_{total} = T_{eye} + T_{sm} + T_{SRT} + 4 \times T_{each tile}+ 4 \times 4 \times T_{each tile}
\label{eq:equation_cost_time1}
\end{equation}

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[gmedina]

You can redefine the counter:

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\documentclass{book}
\usepackage{amsmath}

\renewcommand{\theequation}{Equation \arabic{chapter}.\arabic{equation}}

\begin{document}

\chapter{Dummy Chapter}
\begin{equation}\label{eq:fermat}
  x^n+y^n=z^n
\end{equation}
As we see in \ref{eq:fermat}

\end{document}

I assumed that you were using book as your document class; of course, you can adapt my example according to your needs.

[akira32]

gmedina,thank you! It works. But how about the matrix?
My matrix does not have the serial number.
How do I add the serial number to the matrix and use the \ref with "{Matrix \arabic{chapter}.\arabic{matrix}}"?

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\[
mView = \left[
\begin{array}{cccc}
xaxis.x      &     yaxis.x   &        zaxis.x     &     0 \\
 xaxis.y     &      yaxis.y   &        zaxis.y    &      0\\
 xaxis.z           yaxis.z     &      zaxis.z     &     0\\
-dot(xaxis, eye) & -dot(yaxis, eye) & -dot(zaxis, eye) & l
\end{array}
\right]
\]

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[gmedina]

You can use some of the features provided by the float and caption packages. Refer to the documentations for further information.

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\documentclass{book}
\usepackage{amsmath}
\usepackage{caption}
\usepackage{float}

\newfloat{matrix}{H}{mat}[chapter]

\DeclareCaptionLabelFormat{myStyle}{(#2)}
\captionsetup[matrix]{labelformat=myStyle}

\renewcommand{\theequation}{Equation \arabic{chapter}.\arabic{equation}}
\renewcommand{\thematrix}{Matrix \arabic{chapter}.\arabic{matrix}}

\begin{document}

\chapter{Dummy Chapter}
\begin{equation}\label{eq:fermat}
  x^n+y^n=z^n
\end{equation}
As we see in \ref{eq:fermat}

\begin{matrix}
  \[
  mView = \left[
  \begin{array}{cccc}
    xaxis.x          & yaxis.x          & zaxis.x          & 0 \\
    xaxis.y          & yaxis.y          & zaxis.y          & 0\\
    xaxis.z          & yaxis.z          & zaxis.z          & 0\\
    -dot(xaxis, eye) & -dot(yaxis, eye) & -dot(zaxis, eye) & l
  \end{array}
  \right]
  \]
  \caption[]{}
  \label{mat:matrix}
\end{matrix}
As shown in \ref{mat:matrix}

\end{document}