Related to a previous post, now pardon me to go to a specific example,
here is my output
and my Minimum Working Environment
\documentclass[onecolumn,amsmath,amssymb,nofootinbib,superscriptaddress,floatfix]{revtex4}
\begin{document}
$$
\begin{CD}
1+1 @>>> 2+1 @>>> 3+1 @>>> \dots @>>> d+1 \dots\\
12 @<<< 123 @<<< 1234 @<<< \dots @<<< 123(d+1)\\
@| @| @|\\
@>>> xy @<<< xyz @<<<
\end{CD}
$$
\end{document}
Question: what I wish is that the similar diagram as above: but having the following conditions:
(i) all the leftarrow @>>> removed, but keeps the same spacing as before.
(ii) all the down equal line removed @| removed, but the same (or smilier) spacing
(iii) connecting xyz to 12 from the right to the left arrow (<---)
(iii) may be challenging, so it is fine to neglect this (iii), and your reply on (i)(ii) still count as an answer.
Thank you, any comment is welcome and helpful! :)
@.
and that is it! Edit: I don't think you can do slant arrows in AMSCD package! I am writing a quick tikz-cd answer to this question!