Questions tagged [theorems]

{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.

Filter by
Sorted by
Tagged with
1
vote
1answer
107 views

Alternative theorem numbering separator

I'm using amsthm and I want to have this numbering format for my theorems: Chapter-Section-Theorem The main difference with the default version is the use of "-" instead of "." . Can I do this by ...
1
vote
2answers
2k views

How to cross reference theorem lemma etc as for example “Theorem 1” in LyX

I have loaded the theorem by type and theorem by type within Chapter (TIP for learner:add the first in order to add the second). So I use theorem environment for different types: proposition, ...
1
vote
1answer
434 views

Nice line-break in inline math within theorem environment

This is my first question here, I hope it's not bad (please bear with me if it is). I have quite a specific problem concerning inline math and theorem environment. In general, I want to obtain the ...
1
vote
1answer
68 views

Easylist is incompatible with theorem environment

I noticed that the package "easylist" is incompatible with theorem environment. Here is an example. There is unusual space at the left of theorem 1. Could you fix this strange behavior? This is a ...
1
vote
1answer
140 views

beamer - Theorem - Extra (descriptive) text after (…)

I want to put some extra text (green color text in the picture) after the Theorem (...), NOT inside the parenthesis, but still at the same (top) line. How to set the options to achieve this? Please. ...
1
vote
1answer
90 views

Numbering of Theorems

I am typing lecture notes according to day in a single tex file. The theorems in Lecture of day 1 are numbered as follows: \newtheorem{theorem}{Theorem} \begin{theorem} This is Theorem number 1. \...
1
vote
1answer
868 views

Theorem style with margin on both sides

I'm strugeling with the theorem package thmtools and its features. I've declared several theorem styles with \declaretheoremstyle and \declaretheorem. How can I add a hanging paragraph margin on the ...
1
vote
1answer
847 views

Theorem without number using mdframed

I am working on a text that involves some theorems and I am using mdframed I want a theorem whit just the optional title \begin{teorema}[title desired] Some text \end{teorema} so far I've seen two ...
1
vote
2answers
744 views

Change a amsthm theorem ending [duplicate]

I am writing a text where the editor suggested to close all the definitions with a diamond. So I was wondering, is there a easy way to automatically add a command to all the \end{definition} ? I ...
1
vote
1answer
183 views

Titles become 'unbolded' when adding in a new theoremstyle

Up until now, whenever I create a new definition or theorem etc., the title (so the word 'Definition' etc.) would come up in bold. However, when I try to add '\theoremstyle{remark}', the titles stop ...
1
vote
3answers
337 views

Hyperlinking theorems in smfart

Edit: The class smfart is one of several classes created by the Société Mathématique de France for typesetting mathematics. Here is its CTAN page, where it lies under smflatex, and here is the ...
1
vote
1answer
504 views

Theorem environment with empty label and also no space and no dot.

I want to have a theorem-like environment, without the usual "Theorem x." labeling. I tried to define an empty label text, which results in a dot and space being used as the label text - there has ...
1
vote
1answer
105 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 into ...
1
vote
1answer
700 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 ...
1
vote
1answer
516 views

How to define a command that could generate similar environments just as \newtheorem does?

It's well known that the LaTeX built-in command \newtheorem could generate a series of the theorem environments that are similar: they share the same theme of layout style but differ in their name and ...
1
vote
1answer
126 views

How can I automatically typeset a list of (theorem-like) definitions?

I've defined two custom types of theorem-like environments: definition and example. I now want to automatically typeset a list of such environments present in my document. The output I'd like to get ...
1
vote
1answer
235 views

How to combine thmmarks with addtag for \[\]?

I have the problem, that I have quite a few equations in my text. As I am oftenly unsure if I will need them later as a reference, I searched for a way to avoid exchanging \[...\] with and equation ...
1
vote
1answer
510 views

How can I change the typeface used in my theorem environments

I know I can change the properties of theorem environments (using \newtheoremstyle, as shown below), but how can I change the font type from Computer Modern to Times New Roman? That change should be ...
1
vote
1answer
588 views

Back to the line after Remark and theorem

I write the following code: \newtheoremstyle{examplestyle}{10mm}{10mm}{\slshape}{2pt}{\bfseries}{\newline}{10mm}{} \theoremstyle{examplestyle} to be able to get theorems look like this Theorme:...
1
vote
1answer
360 views

How can I change the spacing around definitions with amsthm?

I am wondering how I may change spacing around definition environments. I have seen the answer posted for the same question about theorems, \makeatletter \def\thm@space@setup{% \thm@preskip=\...
1
vote
1answer
2k views

How can I number theorems by section in LyX?

The theorem count doesn't update when I move to another section. I.e. I'm currently in section 6, and LyX has already in theorem 30, when theorem 1 is in section 1. How can I make LyX start counting ...
1
vote
1answer
630 views

Vertical Spacing inside theorem environment

I am using theorem environment to separate different exercises assigned as homework. So my plan is to write exe's description, move a few lines below and then give my solution. I am using \vspace{3cm} ...
1
vote
1answer
525 views

Defining the caption of newtheorem with a command

In the example below you can see that both environments get the same caption. How to prevent this? You will get the same result if you use an other package like amsthm, theorem or thmtools. \...
1
vote
1answer
514 views

Theorem Ambient [closed]

it is possible to switch the list of theorems between letters and numbers?
1
vote
1answer
35 views

Distance of footnote number from theorem title

Consider the following MWE: \documentclass{article} \usepackage{graphicx} \usepackage{amsmath} \usepackage{amsthm} \usepackage{amsfonts} \newtheorem{theorem}{Theorem} \begin{document} \section{...
1
vote
1answer
26 views

Beamer: Typesetting theorems in upright font *and* numbering them

I want to number my theorems and typeset them in the upright font. I know there are the options "numbered" and "normal font" for the theorem template, but I can't use both at the same time. Is there ...
1
vote
1answer
45 views

Problems with label and cref

I am having some (probably) beginner's problems with labeling I use: \newtheorem{myprop}{Proposition}[subsection] \newtheorem{mydef}{Definition}[subsection] \newtheorem{myrmk}{Remark}[subsection] ...
1
vote
1answer
61 views

How to get \ref to write “Theorem 5” or “Lemma 5” Instead of just “5”?

I sometimes change something from "\begin{theorem}" to "\begin{lemma}" (I have my own commands: \newtheorem{theorem}{Theorem} and \newtheorem{lemma}{Lemma}). But if I just write \ref{theorem1}, then ...
1
vote
1answer
56 views

How to automatically label using theorem counter?

Someone please help me! I have some custom environments and I want to label them according to theorem counter. Means, that I get a numbering like Def. 1.1, Thm. 1.2 and so on. Right now, I have to ...
1
vote
1answer
53 views

How to cite a theorem when its order (and thus number) keeps changing

The \begin{theorem} command will automatically order theorems as they appear in the file. I am currently writing a paper and as I edit the paper the order of the theorems keep changing. However, I ...
1
vote
1answer
25 views

How to renumber a property in a chapter, using lowercase letters instead of Numbers

I want to insert several new propositions in my second section,and name it 'Prop s','Prop t'...,I hope that anyone can help me :) Here is my code. \documentclass{article} \usepackage{amsthm} \...
1
vote
1answer
16 views

Keep theorem heading up when followed by centered content

(I am sure this question has already been asked. I just couldn't find it.) \documentclass{article} \usepackage{amsmath, amsthm, tikz} \newtheoremstyle{solutionstyle} {12pt}{8ex}{\normalfont}{}...
1
vote
1answer
32 views

Delete some Theorems without destroying the numbering

I wrote some math lecture notes with ongoing numbering of definitions and theorems. Now i want to create a shorter version to use as handout, without proofs, examples.. But if i remove some, the ...
1
vote
1answer
68 views

Consecutive numbering in theorem enviroments, inside framed boxes

I want to write propositions, lemmas, theorems, corollaries inside the chosen boxes and definitions NOT inside boxes, all of them with consecutive numbering. I searched for similar posts and I found ...
1
vote
1answer
90 views

Cleveref equation to match italic local style.

This question is similar to \eqref in italic math environnment, but I think all the cross referencing tools from cleveref justify a separate question. I would like cleveref to produce the equation ...
1
vote
1answer
34 views

Inserting a figure after a numbered element

The following code produces a figure at the top of the page, and a heading 'Example 1.1.2.' just below the figure. How can it be done to place the heading above the figure? Have also tried with \...
1
vote
1answer
162 views

Using the apxproof package and \newtheoreprep, my theorems don't show up in the appendix.

Problem A theorem environment was defined with apxproof's \newtheoremrep command. The theorem however, doesn't show up in the appendix, and neither does the subsequent \proof as claimed by the ...
1
vote
1answer
66 views

Change headers of smfbook.cls

I'm using a template which is essentially the smfbook template (provided here). I love it, but I would like to change some details: The first is the headers. By default, in even pages we get ''...
1
vote
1answer
100 views

How do I crosslink properties in a theorem?

I am writing something like this \documentclass[15pt]{book} \newtheorem{theorem}{Theorem}[section] \usepackage{hyperref} \begin{document} \begin{theorem}\label{vectorspacethrm} A vector space's ...
1
vote
1answer
63 views

White space in a theorem beginning with a list

This question is about how to get rid of the white space in a theorem beginning with a list between the theorem caption and the first item: \documentclass{article} \usepackage{amsthm} \usepackage{...
1
vote
1answer
42 views

hyperref not detecting theorem counter/theorem number

Currently, my theorems are indexed as Theorem {chapter}{section}{number}, e.g. Theorem 1.5.15 is the 15th theorem in Chapter 1, Section 5. However, when referencing these using hyperref, the counter ...
1
vote
1answer
322 views

Theorem statement in the title frame of an mdframed environment?

I've defined a theorem environment using the package mdframed. However, I'd like the statement to be contained within a different box from the one which contains the proof. Ideally, this would be the ...
1
vote
1answer
47 views

Can't use some commands in repeated theorem name when using apxproof

For some reason I can't use some commands, such as \def in the name of a theorem when using apxproof's repeated theorems. And I can't understand why. It does not seem to be related to the fact that ...
1
vote
1answer
92 views

Set theorem number and bypass counter

There are times, where I would like to repeat a theorem, for instance, if the proof goes into the appendix. In this case, I would like the two theorems to have the same number, without influencing the ...
1
vote
1answer
1k views

Confusing usage of chngcntr package

I'm not fully understanding how chngcntr works. I've attached an example that hopefully explains my confusion, along with the source code, of course. What I want is for the first section to be ...
1
vote
1answer
695 views

QED symbol at end of special proof environment?

This is a follow up question to: Proof titles with ntheorem But since the original answer-er has not been seen for a month, I'd like to ask a wider community of people. How do you add a QED symbol ...
1
vote
1answer
211 views

Citation call-out in definition header

I'm using a break theoremstyle and I would like to do something like this but my code \usepackage[polish]{babel} \usepackage[T1]{fontenc} \usepackage[utf8]{inputenc} \usepackage[right=2.7cm,...
1
vote
1answer
86 views

Hiding theorem in document, but keeping definition for reference

I am using restatable for theorems so that I can restate them in my appendix. I don't want the some of the original theorem statements to appear. Is there a way to hide the original statement, while ...
1
vote
1answer
92 views

Just in this theorem enumerate are indented

I used several unemerate in theorem but just one is intented. I musn't use any indentation in my tex. This statement is wrong: \begin{theorem} $(\mathbb{R}_{max},\bigoplus,\bigotimes)$ aşağıdaki ...
1
vote
1answer
79 views

How to have perfect alignment of the following equation?

I want to write the following text and mathematical expressions under Theorem environment. I want both of them to be left aligned. Can you please guide me how to do that? \begin{theorem} The ...