6
votes
1answer
64 views

Failure of \text within theorem environment

I have an equation within the statement of one of my theorems. Within this equation, I have some text to name a function. However, when this equation appears within the theorem environment, the ...
2
votes
1answer
50 views

qed symbol not correctly aligned when ending a proof with a diagram

I know there is a myriad of questions about the alignment of the tombstone symbol, but I couldn't see any one that addresses this little issue. Say you end your proof with a diagram such as the ...
3
votes
3answers
111 views

Changing theorem number systems mid document

I have a numbering system setup for most of my document using: \newtheorem{theorem}{Theorem}[section] \newtheorem{lemma}[theorem]{Lemma} \newtheorem{corollary}[theorem]{Corollary} Which produces ...
2
votes
1answer
64 views

How to combine thmmarks with addtag for \[\]?

I have the problem, that I have quite a few equations in my text. As I am oftenly unsure if I will need them later as a reference, I searched for a way to avoid exchanging \[...\] with and equation ...
3
votes
1answer
133 views

Indicator at end of theorem

I'm writing a text with some very long theorem-environments in it and I find the italicised theorems visually not pleasing when they are rather longish. So I'm using the definition theorem style most ...
6
votes
1answer
84 views

How to refer to the number of an item in an enumerate environment inside a theorem

I have something that looks like this: \usepackage{amsmath} \begin{document} \begin{thm} The following are true: \begin{enumerate} \item \label{foo} Foo \item \label{bar} Bar \item \label{baz} Baz ...
3
votes
1answer
748 views

Proof environment: problem with \popQED and \pushQED{\qed}

I was trying to replace . with : in the proof environment and after trying a lot of answered questions here, I got [I'm using amsmath] \makeatletter \renewenvironment{proof}[1][\proofname]{\par ...
10
votes
1answer
719 views

Move QED symbol to the left, i.e. at the end of the sentence

I want to make the qed symbol at the end of a proof appear at the end of the last sentence, not at the far right of the same line. Would like to do this the simplest way possible. All I can find ...
13
votes
2answers
480 views

Breaking a theorem between pages

I currently have this custom myexample theorem environment that is working absolutely great. \newtheoremstyle{myexamplestyle}{}{}{}{}{\bfseries}{.}{ }{} ...
4
votes
1answer
921 views

Specification in `theorem` environment also bold

I'm using the following packages/options in my article: \documentclass[b4paper,12pt]{article} \usepackage[english]{babel} \usepackage{amssymb} \usepackage{amsmath} ...
2
votes
1answer
457 views

Interference between amsmath and ntheorem

I am having some problems that `seem' to me to be a conflict between amsmath and ntheorem. Here is a MWE: \documentclass[12pt,a4paper,oneside]{report} ...
2
votes
1answer
775 views

Amsbook: Theoremstyles definition and remark identical?

If I understand the documentation of the AMS classes correctly, then a theorem in the style "plain" should have bold heading and italic body text, in the style "definition", there should be bold ...
7
votes
2answers
1k views

QED symbol in a custom theorem environment

I have created my own theorem environment like this \newtheoremstyle{mythmstyle}{}{}{}{}{\scshape}{.}{ }{} \theoremstyle{mythmstyle} \newtheorem{mythm}{Theorem} How do I add the QED symbol (the ...
2
votes
2answers
695 views

Need help in order to rewrite a proof environment

I have the following document (that I have shortened considerably), and have several proofs that are of type: "Let x be in set A then go on iff this is true iff this is true, etc and end with ...
4
votes
2answers
6k views

Theorem environment - line break after label [duplicate]

Possible Duplicate: ntheorem environment with indentation Skipping line after “Proof” in proof environment \begin{theorem}[label] The theorem text. \end{theorem} I want to ...
5
votes
2answers
576 views

Theorem environment - centered line

\begin{theorem} Let apples be fruits and let tomatos be a veg. Then the following is true: \centerline{apples are veg} \end{theorem} I just read that one shouldn't use centerline because it's TeX ...
9
votes
6answers
12k views

\qed for theorems without proofs

It is common to place a \qed-Box at the end of a theorem statement (or lemma, corollary, ...) if we give no proof for that statement. How can I do this in LaTeX? If I place a qed-box at the end of ...
4
votes
3answers
1k views

Having the starred version of a theorem environment unnumbered - with ntheorem

I'm trying to switch from amsthm to ntheorem. (This is due to the incompatibility of amsthm with babel+Hebrew, see here and here; seems not to have been resolved.) I would like to have both a starred ...
5
votes
1answer
2k views

How to change the way theorems are displayed with LyX?

The theorems are currently all displayed in bold, but I would like to display them in small-caps. My question is much like this one. However, I am using LyX with an AMS style document class, and was ...
24
votes
1answer
5k views

Problem with qedhere

In a paper I'm writing, I end a proof with a displayed equation that has some cases in it. The relevant code looks something like the following: \[f(x) = \begin{cases} 2x & \text{if $x<0$}\\ ...