{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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Using \newtheorem

Edited to include complete code, as suggested: Here is what the preamble of my main file looks like: \documentclass[12pt]{report} \usepackage{epsfig} \usepackage{upmathgrad2} ...
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How do you number theorems but not definitions?

I am using LaTeX theorem style where I have at the top: \newtheorem{theorem}{Theorem} \newtheorem{definition}{Definition} \newtheorem{lemma}{Lemma} and then I use ...
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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. ...
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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 ...
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Numbering theorems with page numbers

I want to number theorems by (page number).(sequential in the page). So in page 6 I would have Thm 6.1 AAAAAABBBVVV Thm 6.2 BBBGGSDFASFASF Thm 6.3 AXASDFASDF and then in page 7 it ...
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List of definitions: how to remove the prefix “Definition”?

I have write definitions in this way (this is a MWE class unatesi is available here): \documentclass[laurea,oneside,12pt,italian]{unatesi} \usepackage{amsthm} \usepackage{thmtools} ...
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autoref names messed up when defining certain ntheorem theoremstyles

I define a theorem style pretty innocuously, to get things looking a bit more like amsthm theorems. But - my \autoref{}s become messed up with optional arguments of theorem environments. ...
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Remove numbering of unreferenced theorems

Can theorems, lemmas, etc., be automatically displayed without numbers if not referenced (like \mathtoolsset{showonlyrefs} for equation tags)?
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References to named theorems

I would like to know how to give theorem type environments names and then how to later reference them using those names. I was able to use this thread to create named theorems. However, this seems ...
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Numbered Definitions, Theorems in beamer

How to get numbered Lemmas, Definitions, Theorems and so on in beamer?
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How to number subtheorems hierarchically?

Problem in a nutshell: I'd like to number theorems that are embedded within other theorems' proofs with numbers that indicate the parent-child relationship between the two theorems. Problem in ...
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wrong page with pageref if using thmtools

I don't know if the following issue is related to any other question already asked. My issue and minimal looks very simple. \documentclass{book} \usepackage{hyperref} \usepackage{amsthm} ...
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How to add theorem number by the \qed mark at the end of proof environment

I use amsthm. All theorem-like environments use a common counter. As I have some very long proofs I want to add the theorem number to which the proof refers at the end of proof just next to the ...
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Fancy Theorem Environment and Colors

I'm trying to make a boxed theorem environment with colors. I thought I had done it, but I was mistaken--lists were the wrong colors. In the picture above, I would like the "list" to be the same ...
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Theorems and labels

Let me give a bit of background before the actual questions. I took a look at latex.ltx to see how labels are handled. I found that: \def\label#1{\@bsphack \protected@write\@auxout{}% ...
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How to create a framed proof attached to a theorem?

I am trying to create a customized "proof" environment attached to a theorem. It looks like this: So there is first the theorem, and then a gray bar starts on the inner margin. It ends, when the ...
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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 ...
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How to draw a horizontal line at the end of proofs?

How can I draw a horizontal line at the end of proofs? I use \begin{proof}....\end{proof}. I use amsthm package without any modification.
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How to specify RULES in main body

I want to write RULES in main body, how to write the correct TeX code that guarantees a little larger space before and after RULES like this.
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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: ...
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What’s the most straightforward way to typeset theorems etc. when the numbering is entirely manual?

I’m using LaTeX to typeset some homework, and since we’re assigned problems scattered throughout our textbook I have to enter the problem number for each problem I typeset. I’d like these problems to ...
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239 views

How remove indention in theorem environment?

How is it possible to remove the indention at the beginning of the theorem text? \documentclass{article} \usepackage{amsthm} \usepackage{thmtools} \declaretheorem[thmbox=L]{boxtheorem L} ...
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Is it possible to use the enumerate/itemize environment within the proof/remark environment in a nice way?

I wish to use the enumerate/itemize environment within the proof/remark environment, but when I do this the first number/bullet-point is on the same line as the word 'Remark'/'Proof' indented to the ...
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Not numbering Remarks

If I have the following \newtheorem{remark}{Remark} I will obtain Remark 1, Remark 2 and so on. May I know how to remove the numbering in Remark? Like I just want the word "Remark" and not the ...
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How to replace the “.” with “:” in the proof environment?

I have seen a similar post here How to remove the "." in the proof environment?. But I don't know how I can modify the answer to replace . with : by using etoolbox.
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Transitioning to mathtools - environment proof undefined

I am new to LaTeX and I was using the amsthm package in order to write proofs by using the proof environment: \documentclass{book} \usepackage{amsthm} \newtheorem{theorem}{Theorem} \begin{document} ...
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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 ...
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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 ...
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Shaded theorems (thmtools) spanning pages

When the thmtools package is used to create theorem environments with a shaded background, it does not allow separate theorems to span more than one page. This is a rather severe problem if the ...
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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 ...
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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 ...
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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} ...
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How do I adjust the placement of descriptions I've made alongside enumerated statements within a boxed theorem environment?

Basically, what I'd like is to have an elegant command that would enable descriptions (commutativity, associativity, etc.) made alongside enumerated statements to be aligned to the far right side of ...
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Custom proof environment

How to define another proof environment, say, for the "Proof of lemma"? Also, how to make it without the qed box? (I need one with qed box, and another one without qed box.) I'm using amsbook ...
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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% ...
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How can I make a custom theorem for a definition?

Looking at the wikibooks article on theorems has me wondering... I'd like to do something, if possible, similar to the default "proof" theorem style, whereby I can add a custom name to each theorem as ...
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Redefine block template for Beamer theorem-like environment

I would like to redefine the block templates for Beamer's theorem-like environments. For example, the example environment creates an exampleblock. I would like to make the definition environment do ...
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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: ...
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How do I remove parentheses from theorem optional argument?

This is a MWE: \documentclass[12pt]{article} \usepackage{amsfonts, amsthm, amsmath, amssymb} \theoremstyle{definition} \newtheorem{Theorem}{Theorem}[section] \newtheorem*{Pythagorean ...
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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 ...
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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 ...
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Adding text to a different part of the document

I'm writing a LaTeX document at the moment which has problems (which are created in a {theorem} environment) for the reader in it. I'd like to put solutions to those problems in the end of the ...
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662 views

Add vertical space before and after framed-theorem environments

I want my theorem-like environments to be framed, as it's an effective way of making them stand out from the main text. According to Gonzalo Medina's answer to the question box around theorem ...
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Using thmtools: numbering with asterisk

I would like to repeat a theorem number with an added asterisk. That is, the original theorem is: Theorem 1. Lorem ipsum... And I would like the analogue theorem to be: Theorem 1*. Lorem ipsum...
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\newmdtheoremenv-environment unnumbered

I would like to have a \newmdtheoremenv environment without any number, like I get it from \newtheorem*. How can I do this? This is my \newmdtheoremenv environment at the moment. ...
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Usage of \hskip \labelsep while creating an environment with trivlist

I am trying to learn how to create a theorem like environment from http://www.maths.tcd.ie/~dwilkins/LaTeXPrimer/Theorems.html To keep the code below simple, I am not really defining a new ...
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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 ...
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Multiple lists of theorems with different titles (any TeX, in my case XeLaTeX)

I've found out how to use the thmtools package to make lists of theorems. My questions on this are: How do I change the title, given that \renewcommand{\listoftheoremname}{...} gives a LaTeX ...
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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 ...
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Theorem decorations that stay with theorem environment

I am typesetting a document using the memoir documentclass. Currently, my theorems have the following definition (using macros provided by the ntheorem package): % THEOREMS ...