{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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\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. \newmdtheoremenv[...
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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 error:...
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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 \theoremheaderfont{\...
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How to suppress vertical space between theorem heads and enumitem environments?

How can I suppress vertical space between a theorem head and an enumitem environment? I would like the output to look like version 3 below, but I hope there is an automatical solution without ~ and \...
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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: ...
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How to make the enumeration of theorem-like environments indipendent from cross-referencing in a particular way

I'm writing a mathematical paper, and right now I'm using \newtheorem{theorem}{Theorem}[section] to enumerate theorems, propositions, etc. In this way, every statement shows the number of the ...
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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} \...
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How to label items

Is it possible to label items in latex in the following manner: We have the following theorem: Theorem 3.2 (I) bla bla bla (II) ble ble ble (III) bli bli bli So I would like ...
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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, ...
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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, ...
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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{...
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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{...
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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 \...
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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}). ...
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Problems with theoremref

I'm having some problems with the theoremref package. Basically, instead of giving me as output something like "Lemma 1.1.1", where "Lemma" is the name of the theorem, it gives me something like "lem ...
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Setting an “attribute” for Theorem to be accessed later

I am writing a math paper with a large number of theorems. I'm looking to have a table summarizing my results, and I'd love it if the table could be generated automatically from my paper. I' looking ...
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'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 ...
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Typeset Theorems in Upright Fonts for Beamer

I want to typeset my theorems within my presentation in upright fonts. The only way I know is by doing this: \begin{theorem} \textup{Upright Theorem} \end{theorem} When I use article document class,...
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Best Practices for Using Enumerations Within Theorem Environments

Suppose one has a theorem/proof such as: \begin{theorem} The following are equivalent: \begin{enumerate} \item Statement 1 \item Statement 2 \item Statement 3 \end{enumerate} \end{...
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How can I number theorems in introduction without section counter and later with it?

I would like to have my theorems numbered in the following way. Theorem 1. Blah-blah Theorem 2. More blah-blah Section 1. Theorem 1.1. Special blah Theorem 1.2. More special ...
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Wrong vertical space in theorem environment closed by an equation

It happens that LaTeX, to fill a page vertically, adds extra spaces around equation environments (and other vertical spaces). Now suppose I have a theorem environment (using amsthm) which ends with an ...
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Reference-able custom section numbering

I am writing some lecture notes from a class that I have on Monday, Wednesday, and Friday. What I would like to do is organize them by sections defined by the week and the day, e.g. 1M, 1W, 1F, 2M, ...
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Command \* already defined … see p.192 of the manual

My code had: \newtheorem*{theI}{Thesis I} And it gives me the error: Command \* already defined. Or name \end... illegal, see p.192 of the manual. 1.16 \newtheorem*{theI}{ ...
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How to remove space surrounding a colored theorem box?

This is a follow-up question of Combining spacebelow with shaded parameter in thmtools package. Bug?. How can I get rid of the space above the theorem box? If I comment out the mdframed=... line it ...
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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} \begin{...
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\textbf inside a lemma

I have defined lemma and use it as follows: \newtheorem{theorem}{Theorem}[section] \newtheorem{lemma}[theorem]{Lemma} ... \begin{lemma} abc_\textbf{indice} \end{lemma} It turns out that the indice ...
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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): ...
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Fancy box around equation

I am trying to get my equations to show up like: This is my attempt thus far: \documentclass[11pt,fleqn]{book} \usepackage[top=3cm,bottom=3cm,left=3.2cm,right=3.2cm,headsep=10pt,a4paper]{geometry} ...
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Problem regarding Errors after Theoremdefinition using thmtools

I am currently hunting for errors in my template and these two I cannot solve after reading the log and researching: First: ! Argument of \strip@prefix has an extra }. <inserted text> ...
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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} \usepackage[...
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Why don't I get non-italic, normal font inside theorem environment using newmdtheoremenv and mdfdefinestyle?

The theorem text is written in italic even if I set font=\normalfont\normalsize. Maybe related to that, Portuguese "-ção" is not properly recognized in that text. \documentclass[a4paper,10pt]{book} \...
7
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1answer
671 views

Understanding differences between newtheorem and newenvironment

The difficulty that I am having is that I make a newtheorem: \newtheorem{definition}[theorem]{Definition} It however seems to act nearly the same as with newenvironment: \newenvironment{definition}...
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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} \...
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How can I eliminate the vertical extra space before and after the proof-environment?

consider the following code: \documentclass{scrartcl} \usepackage[ngerman]{babel} \usepackage[utf8]{inputenc} \usepackage[T1]{fontenc} \usepackage{graphicx} \usepackage{amsmath} \usepackage{amsthm} \...
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placement of QED symbol on numbered equation line

This question is both on LaTeX and on mathematics writing style; I hope that's still apropriate here. I have a proof that ends with a (right) numbered equation, and I'm pondering about where to put ...
7
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End mark for unnumbered and continued examples

Consider the following MWE \documentclass{article} \usepackage{amsthm} \usepackage{hyperref} \theoremstyle{plain} \newtheorem{theorem}{Theorem}[section] \theoremstyle{definition} \newtheorem{...
7
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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 ...
7
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using a restatable before it is stated

This question is related to the question at Recalling a theorem, which uses the thmtools and thm-restate packages and the restatable environment to define a theorem that can be re-stated later on. Is ...
7
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Change from “Theorem 10.1” to “10.1 Theorem” [duplicate]

Possible Duplicate: Numbering theorem-like environments How can I change the order in which theorems are displayed? I want 10.1 Theorem and not Theorem 10.1 Thanks.
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Remark number in italics

When compiling \documentclass{article} \usepackage{amsthm} \theoremstyle{definition} \newtheorem{definition}{Definition}[section] \theoremstyle{remark} \newtheorem{remark}{Remark} \begin{document}...
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Theorem and lemma sharing counter with mdframed and cleveref

Problem Essentially I've got the same problem described in Cleveref with counters with same name: I've got theorems, lemmata and corollaries all sharing the same counter, and when referencing them ...
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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: ...
7
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Fixing overfull \hbox with mdframed containing an equation

When creating a boxed environment with mdframed, I ran into an issue with a line with an equation, that also happens to be the first line of a definition. Is there a way to fix the problem ...
7
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Align the names in \listtheorems (ntheorem)

Question: How do I align the names of theorems in ntheorem list of theorems? Screenshot: Screenshot: (photoshopped) Context: I am using the ntheorem package to typeset a list of theorems and ...
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How to make the asterisk a part of a counter?

I am writing a usual article in amsart style using amsthm package to number the theorems. I need to enumerate certain conditions, while two of them have to bear the same number differing only with an ...
6
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How to change the font size of all theorem environments?

I have several theorem environments: \newtheorem{theorem}{Theorem} \newtheorem{definition}{Definition} \newtheorem{proposition}{Proposition} etc. and I want to change them so that they all use "...
6
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2answers
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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 ...
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Enumeration in theorem environment

I am puzzled with a formating question. I was asked to change that the enumeration gives me italic numbers in the theorem environment to non-italic ones. How can customize enumeration, such that it ...