Does anyone know how to put an equation tag in $$ line?

[guv]

This has bothered me for a while and I have not found a good solution, it's convenient to write math equations using the \$\$ on the fly and occasionally we want to put a tag for an equation. tag works for the equation environment but not for \$\$. For example I would like to have [1] displayed all the way on the right. Is there a way to do this? Thanks,

$$v = v_0 + a t [1]$$

 

[fresh_42]

\begin{align}
v&=v_0+at \\
s&=s_0+v_0t+\dfrac{1}{2}at^2
\end{align}

is a possibility, but the numbering is not an absolute one. It changes sometimes. I haven't figured out yet what the conditions are. F5 (refresh) sets it back to 1.

\begin{align}
v&=v_0+at \\
s&=s_0+v_0t+\dfrac{1}{2}at^2
\end{align}

 

[guv]

\begin{align}
v=v_0+at
\end{align}

is a possibility, but the numbering is not an absolute one. It changes sometimes. I haven't figured out yet on which conditions.

\begin{align}
v=v_0+at
\end{align}

Thanks, I know the proper math mode works. There is a tool I am using that only supports the \$ and \$$ environment to render equations. That's where I need the right-aligned equation tag.

 

[renormalize]

For example I would like to have [1] displayed all the way on the right.

Just to be clear, do you want your equation numbers to be displayed in brackets $[1]$ instead of in parentheses $(1)$?

 

[jack action]

You can use \tag to set the text to whatever you want. If you don't, the automatic counter is not reset and continues from one post to another. (The reason why it is set to $3$ in post #3 's quote.)

$$
\begin{equation}\tag{1}
v=v_0+at
\end{equation}
$$

Result:
$$
\begin{equation}\tag{1}
v=v_0+at
\end{equation}
$$
If you do not want the added parenthesis, use \tag*. You can then add your brackets.

$$
\begin{equation}\tag*{[1]}
v=v_0+at
\end{equation}
$$

Result:
$$
\begin{equation}\tag*{[1]}
v=v_0+at
\end{equation}
$$

 

[fresh_42]

You can use \tag to set the text to whatever you want. If you don't, the automatic counter is not reset and continues from one post to another. (The reason why it is set to $3$ in post #3 's quote.)

$$
\begin{equation}\tag{1}
v=v_0+at
\end{equation}
$$

Result:
$$
\begin{equation}\tag{1}
v=v_0+at
\end{equation}
$$
If you do not want the added parenthesis, use \tag*. You can then add your brackets.

$$
\begin{equation}\tag*{[1]}
v=v_0+at
\end{equation}
$$

Result:
$$
\begin{equation}\tag*{[1]}
v=v_0+at
\end{equation}
$$

I'm always confused by the fact that 'align' automatically generates math mode and 'equation' does not.

 

[DaveE]

You can use \tag to set the text to whatever you want. If you don't, the automatic counter is not reset and continues from one post to another. (The reason why it is set to $3$ in post #3 's quote.)

$$
\begin{equation}\tag{1}
v=v_0+at
\end{equation}
$$

Result:
$$
\begin{equation}\tag{1}
v=v_0+at
\end{equation}
$$
If you do not want the added parenthesis, use \tag*. You can then add your brackets.

$$
\begin{equation}\tag*{[1]}
v=v_0+at
\end{equation}
$$

Result:
$$
\begin{equation}\tag*{[1]}
v=v_0+at
\end{equation}
$$

This would be a good addition to the LaTeX Guide.

 

[fresh_42]

I combined all that has been said here and finally got the ultimate equation alignment with manually set numbers for only the chosen lines:
\begin{align*}
\ddot{s}&=a_0\\
s&=s_0+v_0t+\dfrac{1}{2}at^2 \tag*{[17]} \\
v&=v_0+at \\[20pt]
a&=a_0 \tag{18}
\end{align*}

\begin{align*}
\ddot{s}&=a_0\\
s&=s_0+v_0t+\dfrac{1}{2}at^2 \tag*{[17]} \\
v&=v_0+at \\[20pt]
a&=a_0 \tag{18}
\end{align*}

 

[guv]

I combined all that has been said here and finally got the ultimate equation alignment with manually set numbers for only the chosen lines:
\begin{align*}
\ddot{s}&=a_0\\
s&=s_0+v_0t+\dfrac{1}{2}at^2 \tag*{[17]} \\
v&=v_0+at \\
a&=a_0 \tag{18}
\end{align*}

\begin{align*}
\ddot{s}&=a_0\\
s&=s_0+v_0t+\dfrac{1}{2}at^2 \tag*{[17]} \\
v&=v_0+at \\
a&=a_0 \tag{18}
\end{align*}

I'm always confused by the fact that 'align' automatically generates math mode and 'equation' does not.

Sorry guys, again the problem is not with proper math environment like align etc. The problem is with \$ or \$$ math mode.

 

[fresh_42]

Sorry guys, again the problem is not with proper math environment like align etc. The problem is with \$ or \$$ math mode.

If you can type a formula like $v=v_0+at$ then why can't you type \begin{align}? However, we also solved your specific problem:
$$
v=v_0+at\tag*{[5]}
$$
came from

$$
v=v_0+at\tag*{[5]}
$$

 

[guv]

I combined all that has been said here and finally got the ultimate equation alignment with manually set numbers for only the chosen lines:
\begin{align*}
\ddot{s}&=a_0\\
s&=s_0+v_0t+\dfrac{1}{2}at^2 \tag*{[17]} \\
v&=v_0+at \\
a&=a_0 \tag{18}
\end{align*}

\begin{align*}
\ddot{s}&=a_0\\
s&=s_0+v_0t+\dfrac{1}{2}at^2 \tag*{[17]} \\
v&=v_0+at \\
a&=a_0 \tag{18}
\end{align*}

If you can type a formula like $v=v_0+at$ then why can't you type \begin{align}?

For reasons I stated in post #3:
Thanks, I know the proper math mode works. There is a tool I am using that only supports the $ and $$ environment to render equations. That's where I need the right-aligned equation tag.

 

[fresh_42]

For reasons I stated in post #3:
Thanks, I know the proper math mode works. There is a tool I am using that only supports the $ and $$ environment to render equations. That's where I need the right-aligned equation tag.

See my edit.

 

[guv]

Thanks, I know the proper math mode works. There is a too

Thanks, I know the proper math mode works. There is a tool I am using that only supports the \$ and \$$ environment to render equations. That's where I need the right-aligned equation tag.

See my edit.

l I am using that only supports the \$ and \$$ environment to render equations. That's where I need the right-aligned equation tag.

Unfortunately I can't see your edit through reply, I am not sure if you are still using align there.

 

[fresh_42]

$$
v=v_0+at\tag*{[71]}
$$
came from

$$
v=v_0+at\tag*{[71]}
$$

Inline tags here are $so$
v=v_0+at\tag{[5]}
## resulted from

##
v=v_0+at\tag*{[5]}
##

which means that the tag command does not work for inline equations, which makes sense.

 

[guv]

$$
v=v_0+at\tag*{[71]}
$$
came from

$$
v=v_0+at\tag*{[71]}
$$

Inline tags here are $so$
v=v_0+at\tag{[5]}
## resulted from

##
v=v_0+at\tag*{[5]}
##

hmm, just tried what you wrote in the tool, unfortunately it's not compiled correctly. It also didn't work on overleaf.

$$
v=v_0+at\tag*{[1]}
$$

I am guessing this is a pretty special thing about physics forums that coded around the \$\$ math mode. Thanks for your help though.

 

[fresh_42]

hmm, just tried what you wrote in the tool, unfortunately it's not compiled correctly. It also didn't work on overleaf.

$$
v=v_0+at\tag*{[1]}
$$

I am guessing this is a pretty special thing about physics forums that coded around the \$\$ math mode. Thanks for your help though.

In that case, you are left with quads.

 

[jack action]

There is a tool I am using

just tried what you wrote in the tool

What tool is that?

 

[guv]

it's a tool using overleaf api, not public. Not working on overleaf is obviously the problem.

 

[jack action]

First time use with overleaf, but it does work:

But I had to specify \usepackage{amsmath}. It works with align and equation alike.

Without using additional packages, I achieve it with \hspace*{\fill} x= 2+y \hspace*{\fill} [1]:

Edit: Actually you have to use \hspace*{\fill} $x= 2+y$ \hspace*{\fill} [1] to get it written as an equation. (In my example it is pure text.)