{theorems} are environments which are commonly numbered. They are extensively used in math texts. Examples of such environments are theorems, corollaries, lemmas, propositions, remarks and definitions. Popular packages are {amsthm}, {ntheorem}, and {thmtools}. Covers discussion on proofs too.

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9
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2answers
4k views

Common, per-section numbering of theorems, lemmas etc.

I use amsthm for my theorems, lemmas etc. I'd like their numbering to look like that: Theorem 1.1.1 Lemma 1.1.2 Definition 1.1.3 Theorem 1.2.1 Definition 1.2.2 Corollary 1.2.3 Theorem 2.1.1 etc. ...
7
votes
1answer
1k views

wrapfigure in theorem-like environment

The following code does not create a wrapfigure within the thm environment. Is that because the latter is a list? \documentclass{book} \usepackage{amsthm} \usepackage{wrapfig} \theoremstyle{plain} \...
5
votes
1answer
1k views

Easy-to-use reference-able environment for restating theorem-like environments?

This question is a development of the same issue as this one; following my own answer and later comment there, I decided it deserves a spin-off. I would like to define an environment for restating ...
5
votes
1answer
748 views

How to make “claim” environments look like “theorem” environment?

I am using LyX 2.0.5 with document class article and 'Theorems (AMS)' in the modules. From what I understand, the claim environment copies its style from the remark environment. I'd like it to copy ...
13
votes
3answers
10k views

amsthm: \newtheoremstyle, headspace, \mbox{}, and lists

Q: How do I define a newtheoremstyle which will start the theorem text on a newline after the header even when the theorem text starts with a list, e.g., enumerate? If there's no way of doing this, ...
10
votes
3answers
878 views

Enumerating inside a proposition and inside a proof

I have one problem with enumerating. The symbols for items look differently when the enumerating is done ''inside'' propositions from the enumerating done ''inside'' a proof. The code \...
6
votes
2answers
463 views

Spacing for \listtheorems in ntheorem

Q: How do I get my theorem number and name to not overlap each other in my list of theorems? This is basically the same question as "Spacing control for listtheorems". But the solutions mentioned ...
1
vote
1answer
532 views

How to suppress vertical space between proof environment heads and itemize environments?

The user 'egreg' recently helped me to suppress vertical space between theorem heads and enumitem environments (such as itemize; see the link below). I now have a similar problem: When a proof ...
1
vote
1answer
448 views

Customizing list of theorems

Is it possible to avoid brackets surrounding the name of a theorem in the \listoftheorems from package thmtools? And if so, how do I do that?
27
votes
2answers
10k views

Custom theorem numbering

This one should be easy for the gurus… Suppose I want to define a theorem environment which has a custom numbering scheme. That is, instead of being numbered according to some counter, it is numbered ...
16
votes
5answers
1k views

How to put a star (or other symbol) in sections that are “special” (difficult, optional, etc)?

I'm currently writing a book, and I'd like some of the sections to be clearly marked as "difficult" or "optional". Not only sections, but also exercises (I'm using the exercise package) and theorems ...
41
votes
2answers
43k views

Theorem without numbering

Is it possible to have single theorems without numbering? I would like to be able to switch them off individually with asterisk-* or have a nono-theorem environment. \newtheorem{theorem}{Theorem} \...
24
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2answers
39k views

Solid black box in the proof environment

I am using \documentclass[12pt]{article} \usepackage{amsmath} \usepackage{amssymb} \usepackage{amsthm} \begin{document} \begin{proof} A = B \end{proof} \end{document} and an empty square box ...
12
votes
2answers
3k views

Wrong spacing before theorem environment (amsthm)

I am using the amsthm package to have environment. I also use \usepackage[onehalfspacing]{setspace} to have 1.5 line spacing. However, when I use the the theorem environment, the spacing before is ...
27
votes
5answers
4k views

How to prevent paragraph breaks after theorem environments?

By default, the list environments (such as itemize) have the nice property that if you add a blank line after it, it starts a new paragraph, and if you don't, the paragraph continues. So The ...
25
votes
5answers
18k views

Changing style of Proof

I'm using the \begin{proof} of the amsthm package. And I want to change the style of the Proof word that is added in the beginning. By default it is italic, I want to make it bold. How can I do it?
7
votes
1answer
2k views

Theorem formatting

\theoremstyle{remark} \newtheorem{example}{Example} Then: \begin{example} Some text \end{example} Output is: Example 1. Some text What is the way to automatically obtain without indent: ...
15
votes
1answer
11k views

How can one cite theorems of references?

I would like to cite the item (iii) of proposition 3 of a reference. How can I do it? Which ways do you suggest? This is a question not only about LaTeX, but also about style. One option I have seen ...
12
votes
3answers
6k views

Theorem environment with hanging indentation

I would like to define a theorem environment with custom layout. In particular, I want the body of the theorem to be indented, like this Text body. Text body. Text body. Theorem 1 (Pythagoras). ...
11
votes
2answers
11k views

Allow theorem split in many frames in beamer

How can a theorem-like environment be (automatically) split into multiple frames if the vertical space it needs is not enough in a frame? In my document preamble I have \theoremstyle{definition} \...
6
votes
1answer
5k views

Theorem/Definition/Lemma/etc independent numbering in Lyx

I am using the Koma-script book class in Lyx. By default, theorems, definitions, lemmas, and so on, follow the same numbering. So after "Theorem 1" comes "Definition 2", then "Lemma 3", and so on, ...
5
votes
2answers
260 views

Hide content to show later

My question appeared about this egreg's answer: http://tex.stackexchange.com/a/210564/15256 I have a list of exercise-answers but I don't want to show the answers immediately but after till I'll pull ...
5
votes
2answers
14k 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 have ...
4
votes
1answer
291 views

Examples enumerated in the margins

I am writing a paper about phonetics that contains lots of examples, usually organised in tables. What I would like is to have these examples enumerated in the margins. Specifically, I need an ...
6
votes
2answers
3k views

Babel (French) does not translate the theorem environment in Beamer class

I'm using the beamer class, with the following preamble: \usepackage[utf8]{inputenc} \usepackage[T1]{fontenc} \usepackage[french]{babel} \usepackage{ae,aecompl,aeguill} \usepackage{amsthm, amsmath, ...
4
votes
2answers
1k views

ntheorem environment with indentation

Considering this post theorem environment with hanging indentation and Stefan's answer, I'd be interested in the same approach with ntheorem. I've been through the .sty file but I have hard time ...
10
votes
2answers
12k views

Title of the theorem

in my paper the text inside theorem is italic while the word Theorem 1 is bold and not italic. I would like to have a title of the theorem also not italic. The example is here: Theorem 1. (The title) ...
8
votes
1answer
5k views

Numbering theorems within chapters

I've recently asked a question: Chapters in TeX regarding working with chapters in tex. I have since learned that I must use documentclass report for the purposes of my document. However, now all of ...
7
votes
4answers
129 views

Cross-reference two numbered environments

Consider the following code: \documentclass[a4paper,12pt]{book} \usepackage{amsthm} \usepackage{hyperref} \theoremstyle{plain} \newtheorem{exercise}{Exercise} \newtheorem{solution}{Solution} \begin{...
7
votes
2answers
2k views

How to number equations within theorem-like environments

I want to enumerate equations within theorem-like environments. Example: \documentclass[a4paper,10pt]{article} \usepackage{amsmath,amsthm} \newtheorem{theo}{Theorem}[section] % \begin{document} \...
7
votes
2answers
236 views

Using `environ` to make a list of environments?

In my document I use an amsthm environment called question, which I use to, well, pose questions to myself for later reference. However, they are spread out in the text. I know ntheorem has a \...
6
votes
1answer
856 views

Overfull \hbox produced by ntheorem subtitles

I switched from using the standard AMS theorem package to ntheorem so I can put alternative end marks on theorem environments (I want my examples to have an end mark, but not the same one as proofs). ...
6
votes
2answers
543 views

Numbering theorems within the innermost sectioning environment present at that point in the document?

Here is what I am trying to achieve: Chapter 1. ... Theorem 1.1. ... Section 1.1. ... Theorem 1.1.1. ... Subsection 1.1.1. ... Theorem 1.1.1.1. Is this even possible? If so, how? ...
6
votes
1answer
223 views

Different numbering scheme per chapter [duplicate]

I would like to change the numbering scheme for my theorems per chapter. That's because I have smaller and bigger chapters. Bigger chapters need subsections for proper structuring, and so my theorems ...
6
votes
3answers
2k views

How to remove brackets from the optional title in amsthm?

This is a follow-up question of this question. when using \begin{theorem}[Open mapping]...\end{theorem}, I received Is it possible to change the format into "Theorem: Open Mapping."(boldface)? ...
5
votes
2answers
1k views

thmtools: How to prevent pagebreak between theorem and proof?

I am using thmtools to format a collection of theorems and their proofs. Is there any way to prevent a pagebreak from happening between the last line of a theorem statement and the first line of the ...
5
votes
2answers
292 views

List of short problem names?

I typeset a book with problems and solutions. I need to get a list of short problem names. I expected there will be a way similar to pitcures: \caption[Figure name for List of Figures]{Caption name} ...
5
votes
1answer
718 views

Spacing (numwidth) control for listtheorems

I am using the \listtheorems command from ntheorem to generate a list of theorems for a document. However, because I number the theorems inside sections, the theorem number is a bit on the long side, ...
5
votes
2answers
1k views

`ntheorem` and `thmtools` seem incompatible

I am preparing the setup of the theorem environments for my thesis. I want to do this right before I have say 200 of those environments in my document, since changing them will likely break things at ...
4
votes
2answers
645 views

How to configure theorems depending on the document class?

I would like to have \newtheorem{teo}{Teorema}[chapter] if the book class is loaded but \newtheorem{teo}{Teorema}[section] if the article class is loaded. Can I do this with some sort of ...
4
votes
1answer
659 views

Remove blank page between Acknowledgements and Table of Contents?

I get a blank page between “Acknowledgement” and “Table of contents”. How can I remove it? I used a template from somewhere. The preamble is as follows: \documentclass[openany,12pt]{ubthesis} \...
3
votes
1answer
2k views

Remove chapter number from theorem number

Currently the document I'm facing has a few chapters which contain subchapters. Those sub/chapters are numbered as usual like 1.1, 1.2, 3.7, .... One specific type of those subchapters shall not ...
2
votes
2answers
2k views

Theorem formatting: strange interaction with itemize

This question is related to this one. I want to have theorem headers alone on a line like this: Theorem 1. some text... In the amsthm documentation, they suggest doing this: \newtheoremstyle{...
1
vote
2answers
57 views

Itemizing theorem body

Using package amsthm, the desired theorem style achieved, \documentclass{book} \usepackage{amsthm} \newtheoremstyle{mystyle}{}{}{}{}{\bf}{}{\newline}{} \theoremstyle{mystyle} \newtheorem*{mythm}{...
10
votes
1answer
913 views

How to customise (e.g. make thicker) the end-proof symbol in Beamer?

I would like to change the symbol for the end of proofs (the square) used in Beamer. It is quite thin, not very visible in some colorthemes. How can I have a thicker border and still in the structure ...
10
votes
2answers
9k views

Spacing before and after with \newtheoremstyle

I want to define my own theorem style for examples. I want them to be numbered the same way as theorems (so Example 2.4 follows Theorem 2.3); I want them to be formatted exactly the same as theorems ...
8
votes
1answer
951 views

Margins for proof environment

The code below is (almost) the proof environment of amsthm: \newenvironment{proof}[1][\proofname]% {% \par\pushQED{\qed}\normalfont\topsep6\p@\@plus6\p@\relax% \trivlist\item[\hskip\labelsep\bfseries#...
8
votes
4answers
339 views

Why doesn't this code combining \foreach with \newtheorem work?

Here is an example document. \documentclass[a4paper]{amsart} \usepackage{tikz} \theoremstyle{definition} \newtheorem{baseTheorem}{Base Theorem}[section] \foreach \x in ...
7
votes
1answer
573 views

'List of theorems', translated into my language

I'm using \listoftheorems (part of the thmtools package) to show a list of all my theorems. It works really well, but it prints "List of theorems" in English; I would obviously prefer it to be in my ...
6
votes
1answer
440 views

Theorem starting with a list

I want a robust way to handle theorems which starts by a list environment, with the first item being on a new line. I don't want to distinguish between theorems with lists and those without by using ...