{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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11
votes
1answer
758 views

How do I get the numbers for theorems, lemmas, examples, etc. before the type?

I am using the article document class with amsthm. I would like number the theorems/corollaries/examples, etc., consecutively as follows: 1.1 Theorem 1.2 Example 1.3 Example 1.4 ...
9
votes
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. ...
29
votes
1answer
9k views

amsthm: what are the newtheoremstyle parameters for the default styles?

The package amsthm contains the predefined theorem styles plain, definition and remark which you can employ using \theoremstyle before your \newtheorem. You can also create new theorem styles like ...
11
votes
4answers
1k 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} \...
17
votes
3answers
5k views

Citing inside theorem header

How do I create something like this without getting any errors? \begin{thm}[\cite[page 10]{ABC2011}] ... \end{thm} I tried putting various things into {...} brackets, but not eliminating any errors....
4
votes
2answers
2k views

How to cite a proof

In my work I am giving a theorem and its proof from a book. I reproduce the proof and alter it slightly but obviously I need to tell the reader that I got it from that book. Where shall I do it? I don'...
3
votes
2answers
575 views

theorem-like environments: italic correction and endmark placement

How would you define theorem-like environments so that: (1) theorems are set in italics with italic correction and (2) proof endmarks occur directly after text?
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 ...
5
votes
2answers
1k views

How to make equations, figures and theorems use the same numbering scheme

It was asked a while ago how to make equation use the same counter as a theorem for example and one solution was to make the theorem counter use the equation instead by using \newtheorem{thm}[...
2
votes
1answer
272 views

Use the same brackets or parenthesis as equations in an empty style environment

I have the following in my preamble: \usepackage[overload, ntheorem]{empheq} \usepackage[amsmath, thmmarks]{ntheorem} \usepackage{mathtools} \mathtoolsset{showonlyrefs,showmanualtags} \newtagform{...
2
votes
1answer
175 views

How do I number theorems within the specified part of text?

I'd like to number theorems as 1.i (2.i) within specified continuous block of paragraphs of a text which is not defined as section or something like that. How to create such theorem numbering?
7
votes
3answers
2k 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 \newtheoremstyle{...
8
votes
1answer
386 views

Weird behavior of ntheorem.

I have the following strange phenomena using ntheorem: I get $\Lambda$ instead of a \box. In other proofs I might get a \box or \Lambda. In the example I end with \[ \] if I use equation instead ...
3
votes
3answers
2k views

Theorem numbers in bold

With the standard theorem-like environemnts (at least when using amsthm), one obtains something like Theorem 2.3. where "Theorem" is in bold but "2.3." is not. I would like to have the number in ...
5
votes
3answers
2k views

How to wrap around a figure in a theorem-like environment?

I want to illustrate my examples, which are set in a theorem-like environment. Is it possible to wrap the text and equations around the figures? I have read about several packages but I can't get them ...
4
votes
1answer
663 views

Theorems and Definitions as quotes

Most standard styles highlight theorems and definitions using italics. Now this is something I really would like to avoid in my thesis (and generally). Unfortunately, if I just remove this "feature", ...
6
votes
1answer
862 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). ...
5
votes
1answer
1k 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
2answers
521 views

flushright of theorem captions

Is it possible to flushright captions of theorem envrionments? For example consider the following code: \usepackage{amsmath} % \usepackage{amsfonts} % \usepackage{amsthm}% \theoremstyle{definition} % ...
8
votes
1answer
2k views

Why is LaTeX giving all of my theorems the same number?

Whenever I try to number my theorems according to the section they are in, they all end up having the same number. I tried the other numbering schemes to see what they do, and the only one that gives ...
0
votes
1answer
701 views

Memoir suitable amsthm customization

I'm using the memoir class to write my master thesis. It's math related so there are lot's of Theorems, Definitions and stuff. I know how to customize theorems by using amsthm. e.g. \newtheoremstyle{...
13
votes
3answers
2k views

Theorem name and number in margin, note in text

I'm using thmtools to make ultra-fancy theorems. I would like the Theorem name and number (e.g., "Theorem 1") to jut out into the left margin of the text, and the note (e.g., "The Fundamental Theorem ...
10
votes
3answers
2k views

How to reference part of a theorem?

I have a corollary with a number of parts whose parts need to be referenced individually later on, so something like: \begin{cor}\label{cor} \begin{enumerate} \item Part one \label{partone} ...
6
votes
1answer
3k views

Vertical space around theorems

I'm working in a document that has double-spacing (yuck!), and I want to establish some standards in order to make the thing look "presentable". Currently, the only environment that has an automatic ...
5
votes
1answer
3k 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 ...
8
votes
2answers
888 views

Page-breaking over titles of theorems that have lists

When I have multiple part theorems, I use an enumerate environment inside my theorem environment. However, I don't like the list to start at the same level as the theorem title, since this produces ...
24
votes
6answers
16k views

Customizing theorem name

Suppose I have a series of theorems that I would like displayed as Jim's Theorem. Bob's Theorem. Will's Theorem. rather than as “Theorem (Jim).”, “Theorem (Bob).”, and “Theorem (Will)”...
10
votes
1answer
1k views

Overriding italicized list counters in plain theoremstyles

Using a list environment inside of any theorem defined with \theoremstyle{plain} results in italicized counters. That is, the following example \usepackage{amsthm} \usepackage{enumerate} \...
4
votes
1answer
426 views

What is the intelligent way of setting the text width for a specific theorem in \newtheoremstyle?

I'm using a \newtheoremstyle to generate a \newtheorem called Example. However, I want the Example (the theorem) and the text, everything, to have a smaller text width than the normal text, and I don'...
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
3answers
430 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 ...
6
votes
1answer
1k views

How to avoid double dot in Theorem Head Spec in case of theorem with no name?

I'm using the \newtheoremstyle{name} command to generate a specific theorem head spec in the form of: {\thmname{#1}\thmnumber{ #2}.\thmnote{ #3}} where #1 is Theorem, #2 is 'the theorem number', ...
3
votes
1answer
614 views

Endmarks not showing up, thmmarks, ntheorem

I can't get thmmarks in ntheorem to work in Latex. I've tried searching around the web, and I can't figure out what I'm doing wrong. I suspect there's something simple I'm missing. Here's a sample ...
14
votes
4answers
1k views

Nice formatting for theorems

I'm writing an article with some theorems and I would like to use special formatting for the theorems - my idea is putting a grey line in the side of the theorem. Can you please show me how to do this ...
15
votes
5answers
17k views

Defining my own proof environment?

How would I define a proof environment that is basically used with \begin{proof} some proof here \end{proof} and it would be equivalent to: \paragraph{Proof:} some proof here \hfill \box ?
3
votes
2answers
950 views

ntheorem and mathdesign are incompatible

I want to use mathdesign fonts (namely bitstream-charter) and I also want to use the ntheorem package. However, it looks like ntheorem tries to load amssymb which is incompatible with mathdesign (it ...
4
votes
2answers
586 views

Is there package to create a “Problem-Solution” environment that is symmetric for “twoside” pages?

Background The following screenshot shows a Problem-Solution environment that is symmetric for twoside papers. NOTE: The problem heading is on the right side for odd-numbered pages. For even-...
11
votes
2answers
2k 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 ...
25
votes
6answers
5k views

Is it possible to skip the first line in a theorem environment?

I'm currently writing up some solutions, and I like to rewrite the problem before answering it. I've set exercise to be a theorem environment, and the code I'm using is \begin{exercise} \begin{...
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?
2
votes
1answer
224 views

Problems with theomac package to restate theorems

I have the following problems with the "theomac" package by Ulrich Diez (whom I don't know how to contact). This package is useful to restate theorems, and was mentioned e.g. here. Problems: Get ...
4
votes
1answer
1k views

list of requirements, problem with listing text of requirements

I would like to have "requirements" in my document numbered. Then I wanted to have list of requirements, but not only number of requirement and corresponding page/section but also theirs text. I ...
6
votes
2answers
1k views

Footnote marker placement in heading of theorem/definition/etc.

I have a definition, and a footnote which refers to the whole definition.  So I’d ideally like an output looking something like: Definition 1.53.   A footnote is a small aside, usually ...
71
votes
3answers
9k views

Theorem packages: which to use, which conflict?

As far as I know, one can create theorem environments using any of amsthm, ntheorem, thmtools and probably more. How should I define my theorem environments? Is one package clearly superior? Which ...
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). ...
10
votes
1answer
747 views

How to number floats in sequence with theorems?

I like having all my theorems, examples, defintions etc. numbered in a single sequence. Is it possible to have LaTeX number my floating figures in sequence with them as well? I.e.: Theorem 1.1 A ...
8
votes
3answers
3k 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 ...
14
votes
2answers
6k views

End of theorem marker placement

I have a question about marker placement after theorems. I am using a style file provided by Oxford University Press, which I am not used to. It is available here: http://www.oxfordjournals.org/...
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 ...
6
votes
3answers
1k views

Tweaking \theoremstyle

Well I want to do is when LaTeX writes Theorem at the new line instead of the left side of the page it be a little indented. In other words I want it to start from a little bit to the right.