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

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cases and spacing between array rows

The space between two rows seems to differ if the cases environment is used. Have a look at the following example: \documentclass{minimal} \begin{document} \[ \begin{array}{l} f(x) =% ...
8
votes
1answer
376 views

Replacing Leading Minus Signs in Environment

In this question concerning negative signs and the alignment of entries in matrix environments, Heiko Oberdiek gave a great answer in which he uses a user-defined command called \matminus instead of ...
7
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4answers
536 views

How would you reproduce the Leibniz binary table

I would like to reproduce the original Leibniz binary table (as seen here). The most precise the better...
7
votes
2answers
733 views

cases environment inside an array

LyX is giving a lot of error messages for my Latex code which runs in other places. \[ \begin{array}{rl} p_{Y \mid H_1}(y \mid H_1) & = f_X(g^{-1}(y))\left| \dfrac{dg^{-1}(y)}{dy} \right| \\ \\ ...
7
votes
4answers
684 views

What is the best way to indicate repeated off diagonal elements in a matrix/array?

I'd like to typeset a matrix of the following kind: When the symbols involved are big, like, in place of $r$, suppose we had $\mu(k-1)$ and in place of $\lambda$, we had $\mu(k-2)$, the matrix B below ...
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
votes
2answers
157 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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3answers
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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}\\ ...
7
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4answers
3k views

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
votes
2answers
357 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
votes
2answers
315 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
votes
3answers
430 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
votes
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\\ ...
7
votes
1answer
501 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
votes
1answer
1k views

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
votes
1answer
346 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
votes
1answer
367 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
votes
2answers
729 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 ...
6
votes
3answers
2k views

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
votes
2answers
9k views

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 ...
6
votes
2answers
1k views

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
votes
2answers
449 views

Using arrays to align parallel equations: Why isn't $|z|$ centered?

There was an earlier question about aligning different parts of two parallel equations in a multiple line environment, and I'm trying to adapt Werner's answer that used an array for my own use. ...
6
votes
3answers
365 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
votes
2answers
199 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 ...
6
votes
4answers
2k views

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} ...
6
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2answers
372 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 ...
6
votes
3answers
464 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
votes
2answers
306 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 ...
6
votes
2answers
1k views

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
votes
1answer
581 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
votes
3answers
5k views

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
votes
2answers
81 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
votes
1answer
154 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
134 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
votes
2answers
141 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
votes
2answers
206 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
votes
1answer
4k views

How to add vertical and horizontal dashed lines in array and tabular enviroments?

I want to present big matrices using concatenation of rows and columns with dashed lines. Also, I need to do the same for some tables. Is there any way to insert dashed lines in arrays and tabulars, ...
6
votes
2answers
105 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
votes
1answer
307 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
votes
1answer
789 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
votes
3answers
145 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
votes
2answers
960 views

Gaussian elimination

I want to demonstrate examples of Gaussian elimination/the Gauss-Jordan method as shown below. There are some things that I like about what I have right now. Each column is the same width from ...
6
votes
1answer
625 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
3k views

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 ...
6
votes
3answers
80 views

How to typeset linguistic AVS

How can I typeset attribute value structures (AVS) and rules like the ones seen here?
5
votes
5answers
3k views

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
votes
4answers
911 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
votes
3answers
8k views

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
votes
2answers
2k views

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} . . . \[ ...
5
votes
4answers
1k views

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 ...