Introductory and except theroms and lemmas... part others getting Italized

Question

I have tried to see what is that code which is italicized the introductory part of second chapter and whatever I am writing except lemma, propositions etc as shown in pictures. But in chapter 0 everything seems good they are not getting italicized.

\documentclass[12pt,a4paper]{report}
\usepackage[latin1]{inputenc}
\usepackage{amsmath, amsfonts,amssymb, amsthm,}
\usepackage{verbatim}
\usepackage[colorlinks = true]{hyperref}
\usepackage[square,sort,comma,numbers]{natbib}
\usepackage[a4paper, total={6in, 9in}]{geometry}
\newtheorem{thm}{Theorem}[chapter]
\newtheorem{propn}[thm]{Proposition}
\usepackage{makeidx}
\usepackage{enumerate}
\setcounter{chapter}{-1}
\usepackage{setspace}
\usepackage{enumitem}
\setstretch{1.15}
\hyphenpenalty
\exhyphenpenalty
\begin{document}
\newpage
\chapter{Preliminaries &amp; Notations}
\vspace{1cm}
Throughout these notes A
\newpage
simpler and eye soothing form
$$K_1(A) = \frac{GL(A)}{E(A)}$$

\newpage
\chapter{Cohn's Example} 
    \vspace{1cm}
In the last chapter we

In the last chapter we proved that for a Euclidean ring $A$ subgroup \end{document}

I am attaching screenshots and latex file so that someone can tell me what to change.

Latex zip file.

I don't have much knowledge of latex I have learned it to write project so please if possible treat me as naive in this field.

Thank you

Please never use screenshots for code. It's hard to read, isn't compatible with search and most of all prevents people from copy-pasting your code to test it. Provide your code directly (between triple quotes for formatting) in Minimal Working Example form. — Miyase, Feb 01 '23 at 07:12
@Miyase But I have provided the latex file itself so can you have a look at it? — Lalbahadur Sahu, Feb 01 '23 at 07:55
Some of us sit behind firewalls, at least during parts of the day, and aren't allowed to download zip files... — Mico, Feb 01 '23 at 08:10
@mico Now i have provided what packages i am using. Can you see any problem? — Lalbahadur Sahu, Feb 01 '23 at 08:12
You really need to show the code immediately before and after \chapter{Cohn's Example}. — Mico, Feb 01 '23 at 08:18
Off-topic: One really shouldn't use $$ in a LaTeX document to initiate and terminate a display-math group. For more information on this subject, please see Why is \[ ... \] preferable to $$ ... $$? — Mico, Feb 01 '23 at 08:51
Are you perhaps using \thm Statement of the theorem\endthm, perhaps? Or some other code that uses \thm? — egreg, Feb 01 '23 at 08:53
Yes I have used \thm for stating theorems. Should I have used \begin{thm} \end{thm}? — Lalbahadur Sahu, Feb 01 '23 at 09:00

score 1 · Accepted Answer · answered Feb 01 '23 at 08:58

1

The problem is very simple. You're using

\propn $[GL(A), GL(A)] = E(A) = [E(A), E(A)].$

which is wrong syntax.

It must be

\begin{propn}
$[GL(A), GL(A)] = E(A) = [E(A), E(A)].$
\end{propn}

The same, of course, with \thm that must be

\begin{thm}
Statement
\end{thm}

By the way, $$ is not a LaTeX construct. Replace with \[...\].

answered Feb 01 '23 at 08:58

egreg

1,121,712

Thank you very much @egreg . You made my day. I was struggling for hours.:) – Lalbahadur Sahu Feb 01 '23 at 09:11

Introductory and except theroms and lemmas... part others getting Italized

1 Answers1