{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.

learn more… | top users | synonyms

1
vote
1answer
22 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 ...
4
votes
1answer
38 views

Bracket problem with \newtheorem

\documentclass[a4paper, 11pt, notitlepage]{report} \usepackage{amsthm} \theoremstyle{plain} \newtheorem{thm}{Theorem}[section] % reset theorem numbering for each chapter \theoremstyle{definition} ...
8
votes
2answers
123 views

Intelligently Numbering “remarks” only when multiple are made

Problem. I am using the amsthm package, and have remarks after theorems. If there is only one remark between two theorems, the remark should not be numbered. If there are multiple remarks between ...
0
votes
4answers
75 views

RTL theorem numbering problem - mdframed and xelatex

I have a problem with wrong numbering order when using mdframed theorem style. As in the MWE, the second theorem number should 2.1.1 (reading from right to left, 1.1 for the section and 2 for the ...
5
votes
1answer
55 views

Custom theorem-style environment

I use LaTeX to typeset notes and case briefs for law school. So far I have settled for a theorem-style layout for each case using thmtools. Here is a minimal working example: ...
6
votes
2answers
122 views

Numbering theorems in a chapter with no sections

Say I have an index such as: 1. Chapter 1.1 Section 1.2 Section 2. Chapter 3. Chapter and I number my theorems as \newtheorem{theorem}{Theorem}[section] with the last theorem in 1.2 being ...
1
vote
1answer
30 views

How to make an environment such as “theorem” not have italics [duplicate]

I found this: How to change the font style in theorem environment? as well as this: Italic in theorem environment Neither however seem to make sense to me as I have been using the following: ...
8
votes
2answers
616 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 ...
11
votes
3answers
94 views

Theorem style similar to equation

I was trying to treat theorems and lemmas as in the book Visual complex analysis which in my opinion has a very nice format for informal reading. I would like to have equations and propositions ...
5
votes
3answers
71 views

Figure number adjusted with theorems

I am trying to adjust the figure numbers linked to the theorem it is displayed in. In case of a theorem contains exactly one figure, the figure number will be theorem number; for multiple figures, the ...
1
vote
1answer
32 views

Wrong numeration using \newtheorem

by using the \newtheorem, the latex does not number the theorems in the right order. used code is \newtheorem{theo.a}{Proposition} \begin{theo.a} this is the proposition. \end{theo.a} changing ...
4
votes
1answer
33 views

How do I reset my theorem count (using mdtheorem)?

% define environments with counters \mdtheorem[style=mpdframe, style=wide ,% style=greyfr ,% style=wideln ] {discuss}{Discuss Topic} ...
3
votes
2answers
86 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 ...
0
votes
0answers
46 views

Customizing list of theorems (LaTeX)

Is it possible to avoid brackets surrounding the name of a theorem in the \listoftheorems from thmtools? And if so, how do I do that?
1
vote
1answer
142 views

Special theorem command

My aim in the last few questions was to define a very flexible command allowing the definition of theorems of various kinds. The reason for that was to have a single command basically for all kinds of ...
4
votes
1answer
99 views

Axiom 1 and 1' in LyX

I'm using LyX with "Theorems (AMS, numbered by type)" and "Theorems (AMS-extended, numbered by type)" modules. I would like to have the following output: Axiom 1. Lorem. Axiom 1'. Ipsum. Is there a ...
0
votes
1answer
39 views

Is it possible to attach a label to a theorem so it can be cited later?

I want to know if it's possible to add some sort of label to a theorem such that I can cite it in the future. I know I can do this by writing explicitly the theorem's number every time I need it, but ...
9
votes
1answer
205 views

Change “Theorem” to “Věta” in beamer

I tried to use \uselanguage{Czech}\languagepath{Czech} as suggested in Babel (French) does not translate the theorem environment in Beamer class, but I still get "Theorem" instead of "Věta" for my ...
3
votes
2answers
35 views

How to italicize the heading and optional title of a theorem?

Consider the following code: \documentclass{amsart} \begin{document} \makeatletter \def\th@plain{ \thm@notefont{} \itshape} \makeatother \theoremstyle{definition} ...
2
votes
1answer
63 views

How to separate definitions from the following text?

Using the definition theorem style from amsthm does not enable the reader to separate between text that belongs to the definition and the text following it. Example: \documentclass{scrbook} ...
3
votes
1answer
66 views

Numbering of assumptions

Suppose I would like to have a title of assumption being Assumption 1-$\mathcal F$., Assumption 2-$\mathcal F$. and so on to be further called in the text with symbols different from $\mathcal F$. Let ...
6
votes
2answers
104 views

Theorem without counter (any TeX)

I often use theorems on LaTeX and have defined various kinds of them. At times, however, it is best not to define a specific theorem which would otherwise be a once-in-a-long-time usage, as for ...
8
votes
1answer
114 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 ...
4
votes
1answer
241 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 ...
3
votes
1answer
48 views

How can I number subtheorems hierachically?

I want to create two hierarchy levels of theorems. The goal is to have something like this: Research Question 1: bla bla Research Question 2: bla bla And then in another section of the article, I ...
0
votes
1answer
111 views

extern lemma declaration

Is it possible to something like this: \begin{theorm} foo equal bar \end{theorem} \begin{proof} \extern{lemma-fu} With this, we will do … % A lot of text \end{proof} \begin{lemma} ...
6
votes
1answer
64 views

How to change QED sign for theorem classes

I'm writing an article which contains some quite long proofs, some of which include claims with proofs of their own. I dealt with that by adding a claim environment using \newtheorem, but there's a ...
1
vote
0answers
43 views

How should one format a proof inside a proof, or 'inner proof'

I've come across this a few times and have yet to find a general consensus on how to format a proof inside of a proof. Should there be a proof environment within the proof environment that is ...
3
votes
2answers
112 views

Theorem Inside Tabular Environment

I'm putting together a Beamer presentation and want a theorem to appear on the left side of the slide and a picture on the right side. I tried to accomplish this with: \begin{frame} ...
3
votes
3answers
696 views

setting section number, etc with counter

Originally, I have these types of numbering: \newtheorem{theorem}{Theorem}[section] \newtheorem{definition}[theorem]{Definition} \newtheorem{lemma}[theorem]{Lemma} ...
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 ...
0
votes
0answers
34 views

Spacing around thm environments when parskip is changed

I am a beginner with LaTeX and have this probably tyro problem - when I use asmthmpackage environments in combination with \parskip, the (vertical) spacing above and below theorems, definitions, etc ...
7
votes
3answers
156 views

Numbering Theorems/Definitions together, by section and without section symbol

I am fairly new to LaTeX and I am looking for a particular style: I want to number my theorems/propositions/corollaries/definitions together and by section. For example, Definition 1.1, Theorem 1.2, ...
17
votes
5answers
10k 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
203 views

Incorrect hypothesis counter

The hypotheses counter seems to work incorrectly. All hypotheses are numbered with a 1. What exactly am I doing wrong? I have the following code: \documentclass[12pt]{article} \usepackage{amsthm} ...
5
votes
1answer
57 views

How to enable line breaking in the standard proof environment with amsmath?

I want to redefine the proof so it accepts linebreaks in the name \renewenvironment{proof}[1][\proofname]{\par \pushQED{\qed}% \normalfont \topsep6\p@\@plus6\p@\relax \trivlist ...
7
votes
2answers
92 views

Reference to List Items in Theorem Environment with Label Type “Theorem”

I'm trying to set up references to list items in theorem environments. Using the thmtools and the cref-package I am able to reference theorem environments, such that the theorem type, e.g. theorem, ...
3
votes
2answers
72 views

Global emphsize the theorem name

I would like to global define the theorem environment such that the name of the thereom (like ABC in the following example) is emphasized (either \textit or \textbf), how can I do that? I know I can ...
8
votes
2answers
154 views

How do I get non-italic words in a theorem environment?

I want some words in my theorem environment to not be italic. I know there are simple ways to get the entire theorem in roman, but I'm looking for an italic theorem with specified words in roman. I ...
6
votes
2answers
82 views

Getting the number of a chapter-numbered theorem but without the chapter number

Suppose in Chapter 3 I have Theorem 3.17. I need to get the "17", NOT the "3.17" which would readily be obtained using \label then \ref. How do i do that? Edit: (Probably a more relaxing condition): ...
2
votes
1answer
75 views

Wrapping image with multiple theorem-like environments and displayed math

I'm struggling to put an image into a page with multiple theorem-like environments, some of which include displayed math, but I can't get the text to wrap correctly around the image and caption: ...
7
votes
2answers
122 views

Change definition number in beamer

In a beamer presentation, I need to redefine one definition (the definition numbers have to be same). How can I do that? Here is my code. \documentclass{beamer} \setbeamertemplate{theorems}[ams ...
5
votes
1answer
83 views

controlling theorem numbers using llncs style

Is there a way to control the numbering of different types of theorems, when using the llncs style? With the envcountsame parameter, all theorems/definitions/claims use the same counter and get ...
1
vote
2answers
65 views

Making an indented, bold definition/theorem/proof

I would like a result such as this: "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur aliquam tincidunt mi id elementum. Fusce nec mauris sodales, cursus massa id, feugiat mi: (My ...
6
votes
1answer
107 views

How to copy a lemma to appendix without changing its number?

I have a document with a lemma (using amsthm), like so: \begin{lem} \label{mylemma} % ... \end{lem} The proof of this lemma can be found in the appendix (see section \ref{sec:proof_of_mylemma}). ...
3
votes
2answers
29 views

Blocks at the End of a Solution Structure [duplicate]

so a couple of months ago I created my own package. Everything in it works great, and so far it does everything I need it to do, the way I need it to. But I want to change one thing. When I made the ...
1
vote
1answer
42 views

Using parskip with ntheorem in a book

I am writing a mathematical book and would like to use ntheorem for theorems. Also, I would like to use parskip, because I like these styles of paragraphs more. My problem is that as soon as I include ...
9
votes
1answer
145 views

Remove numbering of unreferenced theorems

Can theorems, lemmas, etc., be automatically displayed without numbers if not referenced (like \mathtoolsset{showonlyrefs} for equation tags)?
2
votes
0answers
19 views

Error using hyperref, cleveref and \newtheorem: no counter defined [duplicate]

Here's my problem: I'm writing some mathematics lecture notes. I needed some different theorem types, such as propositions, lemmas, plus observations, examples and definitions whose numbering depends ...
7
votes
6answers
10k 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 ...