{array} is an environment used in {math-mode}. It can be useful when aligning terms.

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Drawing Multiple Diagonal Arrows in a Table

My question is basically the same as this one, but with many arrows instead. (I'd like to see the TikZ solution--I feel like once I get it here, I'll be able to extrapolate and do it in other cases ...
7
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1answer
1k views

Block matrix equation with dimensioning

I need to write following matrix equation in LaTex. The dotted lines shown need to be present in the structure but need not have colors (could as well be black). I have used it here only to show the ...
7
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3answers
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Clean-Looking Piecewise-Defined Functions

I want to write a clean-looking piecewise defined function. There's a similar post here: How to write a function (piecewise) with bracket outside?, but I have follow-up questions. The two options I ...
7
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2answers
148 views

Is the blkarray package compatible with Xetex and amsmath?

Running xelatex on the file \documentclass{article} \usepackage{amsmath} \usepackage{blkarray} \begin{document} \begin{blockarray}{c} 1 \end{blockarray} \end{document} gives the error ...
7
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Integral sign inside equation array becomes too small

\documentclass[12pt,a4paper]{report} \usepackage{palatino} \begin{document} \begin{equation}\label{good} \int_{0}^{1} \end{equation} \begin{equation}\label{ugly} \begin{array}{c} \int_{0}^{1}\\ ...
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4answers
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How to align a system of multiline equations?

I've got a system of equations, each of them doesn't fit the page width, so I'm searching the way to align them so that: the brace should appear to the left with no indentation the first line of ...
7
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2answers
345 views

Is it blkarray compatible with beamer?

When I try next code \documentclass{beamer} \usepackage[utf8]{inputenc} \usepackage{blkarray} \begin{document} \begin{frame}{Title} \[ \begin{blockarray}{c|c} ...
7
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2answers
309 views

How to stop fractions in display equations from running into each other?

Is there some standard way to create multiple display equations like the following without having to use: \renewcommand*{\arraystretch}{2} (so that the two rows in the second equation don't get ...
7
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415 views

How can I determine the size of an array?

After a long search period, I was not able to figure out how to determine and use the len of an array like this: \def\mar{ 1,2 } \path let \p1=($(rec.west)-(rec.east)$), ...
7
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1answer
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tabular and array

Consider the following example: \documentclass{article} \usepackage{array} \usepackage{calc} \begin{document} \begin{tabular}{p{\textwidth - 3cm}|p{1cm}<{foo}} Caption1 & Caption2\\ ...
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472 views

What environment to use in writing formal deductions?

Learning about mathematical logic, I have to write formal deductions*. How can I write them using TeX? Any feedback is welcome. (*)Roughly they are numbered lists over two columns, the first ...
7
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Make each column of a table have same width

I have a table as follows: &$\begin{array}{c|cc|cc} & x & \multicolumn{1}{c}{y} & i & 0 \\ \hline x & 0 & \multicolumn{1}{c}{} & -49 & \\ y & ...
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1answer
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Changing the fontsize of selected column in table

I want to decrease the font-size of a selected column. I tried \documentclass{article} \usepackage{multirow,array} \usepackage{booktabs} \begin{document} ...
7
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1answer
330 views

Matrix derivation

I would like to display a matrix with a dot (derivative) on top of it. The entry of this matrix shall consist of arbitrary symbols. When I write \begin{align} \dot{\begin{pmatrix} x \\ y ...
7
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1answer
348 views

Tables header row's: how to ignore the column type?

I have several column types defined using the array and collcell package. An example \newcolumntype{N}{>{\collectcell\num}c<{\endcollectcell}} This alleviates making tables a lot, and makes ...
7
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685 views

Modify locally the “array” environment for Equation Systems

When I started to use LyX 2.0.6 I noticed that when an Equation System is needed, there are two options available to typeset it: using the appropriate command on the Math Line cases, or ...
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3answers
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Color a line in array

Is it possible to change a color of a single line inside an array environment? I have an array of possible solutions and I'd like the best one to be highlighted, the array is declared like ...
6
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Curly braces and nested arrays

I am trying to reproduce the equation of the image below. I am using an array environment to create the first big curly brace. I have tried to nest a second array to produce a second curly brace, but ...
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2answers
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Several lines of formulas to the left of one curly brace pointing to equation number

How to make several lines of equations under one curly brace from the left side, such that it point to a reference number. Now I do something like this: \begin{align} \left. \begin{array}{ll} a = b ...
6
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877 views

Difference between tabular and array environment

What is the difference between a tabular and an array environment? When should be used the former and when the latter?
6
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358 views

Adding colour to table cells when decimals are aligned with arrays and {.} used in the column definition

I've got a table (below) that aligns the decimal points of my data - I wish to highlight a value (2 adjacent cells), however this leaves a white space where the decimal point is! If I increase the ...
6
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2answers
358 views

When substack and array doesn't work

I am trying to write a formula. But both substack and array cannot fulfil my needs (as far as I know how to use them). The first is how I want it to look like. But I need an i'\neq i below the ...
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3answers
451 views

How to use data structures in TikZ?

I created a foreach statement, using expl3 and TikZ/pgf: \documentclass{article} \usepackage{tikz} \setlength{\parindent}{0cm} \usepackage{expl3} \ExplSyntaxOn \cs_new:Npn \Counter #1 \Stopper { ...
6
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2answers
284 views

Vertical lines in matrices should be aligned

I'm trying to write matrices one below the other but I want the vertical lines (compare example below) to be aligned. Eventually, there will be several matrices in one document - in the example below ...
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2answers
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How to make frame in matrix? [duplicate]

I want to draw : I have tried to make this by the following command : \documentclass[11pt,twoside,openright]{book} \usepackage{geometry,tikz,amsmath} \begin{document} ...
6
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1answer
556 views

How can I update the array package? Warning from tabu

I am trying to use the tabu package, but it returns a warning which does not seem like a good sign. Does anyone know how to resolve the following issue? LaTeX Warning: You have requested, on input ...
6
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Using a big brace over multiple lines - multiple lines left of it

I am super helpless, I wanna do the following: Mathmode, 2 lines on the left, a brace over both (using array) and than I wanna have 3 lines on the right. A small example: \begin{align*} \left. ...
6
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2answers
78 views

Decipher a code for an array environment

I saw on this web site two codes to get vertical alignment at the equals signs in consecutive systems of equations. One of them uses the systeme package and the \mathrlap command for the quantity on ...
6
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1answer
144 views

Parsing a \$ as part of an improved \getargs command

As the author of stringstrings, I am acutely aware of its slowness. For small tasks, that slowness can be annoying. For larger tasks, it can be prohibitive. Recently, in using data column as ...
6
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2answers
132 views

How to make the this brace bigger? “}”

here is my code: \begin{equation*} \left . \substack{ 2 \beta_{r,j}^{(l)} = \beta_{r,j}^{l-1} + \beta_{R+r,j}^{(l-1)} \epsilon_{m}^{j} \\ 2 \beta_{r,m+j}^{(l)} = ...
6
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2answers
125 views

How to split long expression inside left brace?

Please find below the equation I want to write on my Latex document but unfortunately i can't split the 2 expressions inside the left brace because they are too long \begin{equation} \begin{split} ...
6
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2answers
201 views

How to match left alignment of equations in math mode outside and inside an array?

My code is shown below, every equation is left aligned, my problem is that the equations inside the array enviroment seem to be indented. How can I align all the equations to the same vertical line? ...
6
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2answers
102 views

Problem with \pgfmathparse and font style of array elements

There are probably other ways to do that, but I was happy I've found this code working just fine for my needs: \documentclass{article} \usepackage{tikz} \newcounter{grpcnt} \def\groups{grp1, grp2, ...
6
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1answer
285 views

How to model {smallmatrix} with {array}?

It is pretty normal, I guess, to use \begin{array} ... \end{array} to model matrices, when more control is required than you get with pmatrix, bmatrix, etc., with the proper \left and \right, and the ...
6
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1answer
775 views

Inserting arrays into semantic's inference rules

I want to typeset inference rules containing tables (or arrays) in the premises. I'm using the semantic package, which sets the premises (and conclusion) in math mode, so I thought this might work: ...
6
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3answers
127 views

Display math gets typeset as inline math

When typesetting the below annotated equation my summations are being typeset as inline maths rather than display maths. If I wrap the sum and subscript with \smashoperator{} then they are typeset ...
6
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1answer
505 views

Combining rows and columns in array

I am trying to write some kind of blockmatrix \[A_n= \left( \begin{array}{cc|cc} && 0 & 0 \\ & A_{n-2}&n-2&0 \\ \hline\\ 0&-n+2&1&n-1 \\ ...
6
votes
1answer
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Breaking an array of equations

I wanted to break long equations in an array environment. To do this, I used dmath environment from breqn package but it did not work. How can I write long equations in an array environment with line ...
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Automation: static array for the sieve of Eratosthenes

I would like to produce one simple array of numbers from 1 to 100 of dimension 10*10, where 1 will not be displayed. In Sieve of Eratosthenes in tikz there are pretty animations, but what I need is ...
5
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4answers
889 views

Big curly brackets and rotated text around table

I have a rather cramped looking table here showing the chance of a nurse touching a surface type given (s)he is doing a certain type of care. I would like to make a large curly bracket to the left of ...
5
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3answers
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Typesetting on block matrix is ugly

I have a large n x n matrix I'm trying to typeset. My current code is as follows: $\left(\begin{array}{c|ccc} 1 & c_2 & \cdots & c_n \\ \hline 0 & ...
5
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2answers
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Underbraces in Matrix Divided in Blocks

How to put underbraces, inside the parenthesis of a matrix, to name both sides of the blocks? \documentclass[a4paper,12pt]{article} \usepackage{amsmath} \usepackage{array} \begin{document} . . . \[ ...
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4answers
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Table of displayed formulae

I'm trying to make a table of formulae. I've tried a bunch of different approaches (including \parbox, align, eqnarray, etc.), but none of these satisfy all of the requirements: \hline (or something ...
5
votes
4answers
129 views

How can I align the < signs in my array (piecewise function) in TeX?

I don't know how to use align with an array, any suggestions? I'd like the first < sign in each line to match up while retaining the alignment that I currently have. Here is my code: \be ...
5
votes
2answers
166 views

Matrix inside matrix

How I can make a matrix inside a matrix as shown in this picture? Indeed, I want to treat every block as a separate matrix. For example, I want to add braces over and under the second matrix by ...
5
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4answers
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underbrace matrix inside brackets

I would like to put an underbrace below the matrix like this: $$\left(\underbrace{ \left[\begin{array}{ccc} a&b&c\\ d&e&f\\ g&h&i \end{array}\right]}_{A} ...
5
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1answer
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LaTeX doesn't recognize \end{array}

Following code ... \begin{align} \begin{array} 1 & 2 & 3\\ 1 & 2 & 3 \end{array} \end{align}... results in numerous errors: - Argument of \array has an extra } (line 0) - ...
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2answers
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breaking lines in a matrix/array environment

I have a matrix whose entries are quite long and must be broken up across multiple lines. The desired break-points are the + operators separating terms in each matrix element. The following code is ...
5
votes
2answers
77 views

Split within a matrix environment

I have an array that looks like this: I'm not sure how I can add the curly brackets and text there. I formatted the array like this: \begin{equation*} \begin{array}{r*{10}{l}} \trom{1} & ...
5
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3answers
62 views

Array environment cell over two rows keeping alignment

I am trying to span braces over two rows while keeping the aligment in the following example correct alignment in this case the alignment is correct. I think I am nearly there, any help would be ...