Sstrhsrtj

I know, that it is possible to add dot after the chapter / section / subsection number. But if I use

renewcommand{thechapter}{arabic{chapter}.}

renewcommand{thesection}{thechapterarabic{section}.}

renewcommand{thesubsection}{thesectionarabic{subsection}.}

(as in this solution: How to add a dot after the section number?), then I have too many dots in the case of number of figure / theorem etc. For example, if I apply

documentclass[10pt]{book}

usepackage{amsmath,amssymb,amsthm}



usepackage[chapter]{algorithm}



renewcommand{thechapter}{arabic{chapter}.}

renewcommand{thesection}{thechapterarabic{section}.}

renewcommand{thesubsection}{thesectionarabic{subsection}.}



newtheorem{defin}{Def.}[chapter]

newtheorem{tw}[defin]{Th.}



begin{document}



chapter{New chapter}



begin{defin}

Some definition

end{defin}



begin{algorithm}

caption{Some algorithm}

end{algorithm}



begin{figure}[hptb]

caption{Some caption}

end{figure}



section{New section}



begin{defin}

Some definition

end{defin}





end{document}

then I have

How could I remove the unnecessary dots in 1..1 and similar numbers? Thank you in advance for your answer.
Edit: I have realized, that my question can be put in other way. Is this possible to add dots, but only: 1. in the case of titles of chapters / sections etc. 2. and in the case of table of contents, but not for other references?

It seems, that instead of this code

renewcommand{thechapter}{arabic{chapter}.}

renewcommand{thesection}{thechapterarabic{section}.}

renewcommand{thesubsection}{thesectionarabic{subsection}.}

I should use

usepackage{titlesec}

titlelabel{thetitle .quad}

usepackage[dotinlabels]{titletoc}

But I'm still looking for the answer in the case of chapters.