I'm using \documentclass{amsbook}
I'll grant it's a little unusual but I'd like to open a chapter with a series of subsections, but without a section. When I do this I get the numbering noted in the question:
0.1 A Subsection.
Which I would like to be 1.1 A Subsection.
There were several teasingly close Q&As here that I've read and from them I figured the answer would be to reset the section counter. So I tried \setcounter{section}{1}
I got: 0.2 A subsection, which doesn't make any sense to me assuming that the numbering goes section#.subsection#. So, I clearly don't understand the mechanics.
Any help?
EDIT: Includes code and screen shot.
\documentclass[11pt,reqno]{amsbook}%
\begin{document}
\chapter{A chapter}
\setcounter{subsection}{1}
\subsection{A subsection}
\end{document}

\subsectionwithin a regular section? So you'll have1.1 Subsection.as the first subsection in some chapter, and then later1.1 Subsection.as the first subsection in the first section? – Werner Nov 08 '22 at 23:50\chapter{xxx}\setcounter{section}{1}\subsection{yyy}gives 1.1. yyy in amsbook. – Ulrike Fischer Nov 08 '22 at 23:50\setcounter{section}{1}, not\setcounter{subsection}{1}. – Werner Nov 09 '22 at 00:291.1 Subsection.that doesn't occur in a section and the first subsection1.1 Subsectionthat does occur under the first section? – Werner Nov 09 '22 at 00:49chapter,section,subsection. Is it that you prefer the look ofsubsectiontosection? Logically asubsectionmust be a sub of asection. Please don't confuse the logical structure of a document with it's printed appearance . Admittedy they should be the same so as tot to confuse your readers. – Peter Wilson Nov 09 '22 at 19:42\subsection*, say) to delineate the content (it'll have the same formatting as the numbered level) and then don't have to worry about the numbering being confusing to the end user/reader. – Werner Nov 10 '22 at 01:28