{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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3
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1answer
121 views

How can I define a new environment which limits the scope of \newtheorem commands?

I am attempting to make an environment out of the command given in one of the answers to this question: Customizing theorem name. \documentclass{article} \usepackage{amsmath} \usepackage{amsthm} ...
2
votes
2answers
696 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: ...
2
votes
3answers
491 views

How to change the font style in theorem environment?

I have a constant defined by \newcommand{\Lip}{\textrm{Lip}} or \def\Lip{\text{Lip}} I use this constant in equations. But in the theorem environment, it appears in italic style. Does anyone ...
11
votes
2answers
723 views

A theorem and its proof in different places

I have a couple of theorems, proofs of which are quite boring and longish. I would like to place theorem formulations in a usual place and stack up the proofs at the end of the chapter. How to do ...
11
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2answers
6k views

How to rename theorem (or lemma) in Beamer to another language?

I'm Malay user. I want to rename the theorem tag in Beamer. Does anyone know how to do it? When the document class is article or book, I can simply modify the preamble as follows: ...
11
votes
2answers
1k views

Italic in theorem environment

Consider the following theorem: \begin{theorem} If $x=0$, then $xy$ is equal to 0. \end{theorem} The first "0" will be typeset in upright typeface and the second one in italic. Including amsthm ...
10
votes
6answers
3k views

How to remove the “.” in the proof environment?

Using amsthm, is there a possibility to remove the dot when typing \begin{proof}...\end{proof}? This would be typeset as "Proof." If you change your proofname \begin{proof}[Proof:]...\end{proof} you ...
8
votes
1answer
113 views

Space generated by theorem labels (XeTeX)

With the thmtools package, combining \begin{foo}[name=bar,label=x] with the line \newtheorem{foo}{Foo} in the preamble typesets to Foo xxx (bar), where xxx is a number. After the (bar) there is an ...
8
votes
4answers
199 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 ...
8
votes
1answer
310 views

How to alternate labels' styles in enumerated lists?

How can I alternate the display of an enumerated list's counter according to which command I've used? E.g., I want \foo{poor Yorick!} to look like (9) poor Yorick! but I want \bar{Joelle} to have a ...
8
votes
2answers
4k 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
4answers
921 views

Annoying space before the first item in an enumeration which starts a theorem

Consider the following example: \documentclass{article} \newtheorem{Theorem}{Theorem} \begin{document} \begin{Theorem} On the other hand, this one has only one claim. \end{Theorem} \begin{Theorem} ...
7
votes
3answers
146 views

Overruns in newtheorem in latex

I'm defining a newtheorem as follows: \newtheorem{definition}{Definition} the problem is when the definition name is long, it results in overruns. I've tried \\ to split the name in two lines, ...
7
votes
3answers
446 views

Hyperref and theoremref conflict?

I initially thought that this problem was with Unicode characters, but reducing the file led to the MWE below which has none, so it seems that theoremref and hyperref don't like each other. Consider: ...
7
votes
2answers
548 views

Own command to create new environment

The following code isn't very minimal but I hope you will be able to understand the code. \setcounter{errorcontextlines}{999} \documentclass{scrartcl} \usepackage{lipsum,ntheorem} ...
7
votes
3answers
1k views

amsthm environment and colorbox

I'd like to customize the amsthm command a little bit but I cannot find the relevant lines in the (undocumented?) .sty. How can I put a colorbox on the name of the environment ...
6
votes
1answer
104 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 ...
6
votes
2answers
658 views

Indent Theorem like \hangindent, but for multiple paragraphs

I would like to create a theorem style which indents the theorem exactly like a \hangindent would do, expect that the indention should continue for all paragraphs of the theorem. For example: ...
6
votes
1answer
465 views

amsthm: Theorems, Lemmas numbered backwards

What I want \newtheorem{thm}{Theorem} \begin{thm} A \end{thm} \begin{thm} B \end{thm} \begin{thm} C \end{thm} Ends up generating Theorem 1 A. Theorem 2 B. Theorem 3 C. What I want instead: ...
6
votes
2answers
829 views

Creating list of for \newtheoremstyle

I want to create an list of theorems much like the list of figures, but couldn't find a packacke or tutorial to solve my problem. I tried this http://texblog.org/2008/07/13/define-your-own-list-of/ ...
6
votes
1answer
686 views

Cleveref with counters with same name

I am trying to use the cleveref package. I have the following counters defined (hopefully this is the right way to do it!) \newtheorem{thm}{Theorem}[section] \newtheorem{lemma}[thm]{Lemma} ...
6
votes
2answers
599 views

Improper alignment of qed-like symbol when using equation to end

I use this code to define a symbol that I put at end of (maths) examples in my file. \newcommand\xqed[1]{% \leavevmode\unskip\penalty9999 \hbox{}\nobreak\hfill \quad\hbox{#1}} ...
5
votes
2answers
113 views

thmbox splits theorems in two pages and the option “nocut” produces many empty spaces in pages.

this is a follow up to the problem described here. I have the same problem and the proposed solution does not completely solve the problem. I mean, it does solve the problem but also creates another ...
5
votes
1answer
137 views

Using amsthm to number examples - how do I account for altered examples (i.e. 1', 1'', etc.)

I have sought long and hard for a solution to this and experimented with a combination of http://tex.stackexchange.com/a/43351 and http://tex.stackexchange.com/a/443, but could not get it to work. I ...
5
votes
1answer
254 views

Indent text after line 1

How can I accomplish something like this: Basically, I want my text to be "indented" after the first line. It would be great if somebody knew an answer. Ideally I would like to do this, because I ...
5
votes
1answer
2k views

No Counter Theorem1 is defined

I got an exception in the following latex code: "No Counter Theorem1 is defined", what is the problem? \documentclass[conference]{IEEEtran} \newtheorem{definition}[theorem1]{Definition} ...
5
votes
1answer
185 views

Non-italicized text in a \newfixedcaption

This is a very specific follow-up question to this answer given to this question. I want to insert a picture, and use overpic to label it, in between two paragraphs of text in a thm environment ...
5
votes
1answer
777 views

ntheorem and theoremname

I'm using ntheorem (mostly for thmmarks), and I'd like to change the font used for the theorem name. Specifically, I'd like \begin{theorem}[Name of theorem] to generate "Theorem 1 (Name of ...
5
votes
3answers
2k views

Footnote doesn't appear when put into a “definition” environment

When I try to put a footnote into a definition environment (or theorem, etc.) it fails, whereas it works well in plain text... How can I fix it? (N.B. I use thmbox, I don't know if this have an ...
4
votes
1answer
384 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} ...
4
votes
1answer
437 views

Horizontal spacing issue in \listoftheorems using amsthm + thmtools

I am using the command \listoftheorems with packages amsthm and thmtools. The problem is that the theorem's head and its optional title overlap. How can I make this space bigger to avoid overlapping? ...
4
votes
1answer
145 views

How do I determine the name of the counter associated with a theorem-like environment

(A question related to this one and leading up to this one.) Suppose I'm using ntheorem. I would like to have a command which determines the name (not the value) of the counter associated with a ...
4
votes
1answer
774 views

Newtheoremstyle: start counting at 0

I defined a \newtheoremstyle and I want it to start counting at 0 instead of 1. How do I do that?
4
votes
1answer
1k views

amsthm: how to reduce the vertical spacing between theorem and proof?

I'm using the amsthm package to layout theorems and their proofs. How can I reduce the vertical spacing between the last line of the theorem statement and the first line of the proof? BTW, I tried ...
4
votes
2answers
965 views

How can I get a line break in a theorem headline?

I have a theorem title, which is longer then the page width. How do I get the title in two lines? \begin{theorem}[this title is to long for one line] the theorem \end{theorem}
4
votes
2answers
1k views

Sectioning paragraphs, such as for different cases inside a proof

I'd like to have offset paragraphs inside a proof, say to delineate one case from another. I've been using \newtheoremstyle{component}{}{}{}{}{\itshape}{.}{.5em}{\thmnote{#3}#1} ...
4
votes
3answers
355 views

References to lists in theorem-like environments/writing # symbol to files

A little warning in advance: This will be quite lenghty. I spent quite some time over the last few days trying to solve the following problem: I'm typesetting mathematical lecture notes and have used ...
3
votes
2answers
85 views

Definitions, theorems, … with description inside a box and the title above the box

I am searching for a definition (or similar) environment with the following features: Numbering Listing Definition title with number above the description Definition text inside a box with black ...
3
votes
1answer
114 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 ...
3
votes
1answer
74 views

thmbox color bar

I would like to ask if anyone knows if it is possible to change the bar color in the thmbox package. One can change the thickness of the bar but not the color. \usepackage{thmbox} ...
3
votes
1answer
120 views

Numbering a reworded theorem

When using LaTeX for numbered theorems (or other numbered environments for that matter), if you have a theorem, and then you want to give a reformulation of the theorem, is there anyway to get LaTeX ...
3
votes
2answers
2k views

Automatic \noindent on the first paragraph of each theorem environment

I am currently putting a \noindent before the first paragraph of each theorem, proof, etc. in my memoir document. Is there any way to have memoir do this automatically? For example, is there any way ...
3
votes
2answers
435 views

Missing footnote and marginpar with package thmbox or package thmtools with option thmbox

I am using package thmbox to write theorems. If I include footnote or marginpar within the body of a theorem, the following problems arise: the text of the footnote is simply missing, while the ...
3
votes
1answer
376 views

Extra space before labeled theorem body with thmbox or thmtools+thmbox

Package thmbox seems to add an extra space at the beginning of the body of the labeled theorems. See example below. Package thmtools with the thmbox option does the same. Latex original, package ...
3
votes
2answers
213 views

How to use an environment whose name comes from a reference?

Suppose somewhere in my long Ph.D. thesis I use a theorem-like environment (maybe it's a theorem, maybe it's a lemma, etc.), and label it. At another place I want to have an environment which is the ...
3
votes
3answers
2k views

\normalfont in new theorem-like environment

How can I get universal in my new environment normalfont instead of italic (default)? I thought it was something simple like \newtheorem{exercise}{ \normalfont}[chapter] ` but doesn't work. I could ...
3
votes
4answers
1k views

ntheorem with the [amsthm] option ignores styling of a theorem environment

I'm using ntheorem with the amsthm option, to define a theorem-like environment for stating notes. I should be getting an environment beginning with the word 'Note' in italic font, followed by the ...
2
votes
1answer
85 views

Change the way theorems are numbered within a document

I'm working a document that has one (very large) chapter, in which theorems, lemmas, etc. are numbered with subsubsection, i.e. the start of the document has the command ...
2
votes
1answer
73 views

How to adust margin in listoftheorem

I have some definitions and theorems inside subsubsubsection. When latex generates the listoftheorems, the last digit of the subsubsubsection overlaps the first letter of the name of the theorem, ...
2
votes
1answer
93 views

Combining spacebelow with shaded parameter in thmtools package. Bug?

In the following example the spacebelow parameter is ignored. If you comment out the shaded parameter, the space is considered. Is it possible to use both parameters spacebelow / shaded? ...