Package Amsmath Error Align

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Align Equation Left Latex

best answers are voted up and rise to the top ! Package amsmath Error: \begin{aligned} allowed only in math mode. Althought the display pdf is proper! up vote 4 down vote favorite The display pdf is ok but i receive the following error message : ! Package amsmath Error: \begin{aligned} allowed only in math mode. \documentclass[10pt,a4paper]{book} \usepackage[utf8x]{inputenc} \usepackage[greek]{babel} \usepackage{amssymb,amsmath,latexsym,amsfonts,amsthm,cleveref} \newcommand{\abs}[1]{ \left\lvert#1\right\rvert} \newcommand{\norm}[1]{\left\lVert#1\right\rVert} \begin{document} \begin{aligned} \norm{xy}_{\mathbb{H}}^4 ={} & \abs{z+w}^4 + 16(x_3 + latex aligned y_3 - \frac{1}{2}Im(z\bar{w}))^2 \\ & = \abs{ \abs{z+w}^2 + 4i(x_3 + y_3 - \frac{1}{2}Im(z\bar{w}))}^2}) \\ & = \abs{ \abs{z}^2 + 4ix_3 + 2z\bar{w} + \abs{w}^2+ 4iy_3 }^2 \\ & \leq (\abs{ \abs{z}^2 + 4ix_3} + 2\abs{\bar{z}}\abs{w} + \abs{ \abs{w}^2 +4iy_3})^2 \\ & = (\norm{x}_\mathbb{H}^2 + 2 \abs{\bar{z}}\abs{w} + \norm{y}_\mathbb{H}^2)^2 \\ & \leq ( \norm{x}_\mathbb{H} + \norm{y}_\mathbb{H})^4. \end{aligned} \end{document} errors share|improve this question edited Jul 24 '15 at 20:51 Christian Hupfer 97.1k12101214 asked Jul 24 '15 at 20:44 blackjack 212 I wonder you could get a correct pdf if you have that error. Enclose the aligned environment with $...$ pair. –Christian Hupfer Jul 24 '15 at 21:08 i can't see why the question is downvoted –touhami Jul 24 '15 at 21:14 @touhami: There were two downvotes some minutes ago, however, not by me... –Christian Hupfer Jul 24 '15 at 21:15 i did enclosed with $ .. $ but now i receive :! Incomplete \ifodd; all text was ignored after line 25. –blackjack Jul 24 '15 at 21:17 @blackjack: Yes, there are more errors inside ;-) The typesetting is quite messy, actually –Christian Hupfer Jul 24 '15 at 21:19 | show 1 more comment 2 Answers 2 active oldest votes up vote 3 dow

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Alignat Latex

Us Learn more about Stack Overflow the company Business Learn more about hiring developers multiple equations latex or posting ads with us TeX - LaTeX Questions Tags Users Badges Unanswered Ask Question _ TeX - LaTeX Stack Exchange latex label equation is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question http://tex.stackexchange.com/questions/256920/package-amsmath-error-beginaligned-allowed-only-in-math-mode-althought-th Anybody can answer The best answers are voted up and rise to the top Multiple labels in aligned environment up vote 11 down vote favorite 8 I would like to format an optimization problem by \documentclass{article} \usepackage{amsmath} \begin{document} We want to label each line separately. The inserted text and formulas have to be aligned like in this example: \begin{equation} \begin{aligned} \label{eq:3} & \underset{X}{\text{minimize}} & & \mathrm{trace}(X) \\ & \text{subject http://tex.stackexchange.com/questions/103891/multiple-labels-in-aligned-environment to} && X_{ij} = M_{ij}, \; (i,j) \in \Omega, \\ & && X \succeq 0. \end{aligned} \end{equation} \end{document} (Already described in How to label an optimization problem with a label such as (P)?). An ideal alignment of the inserted text and formulas is achieved by the aligned environment. However, I want to label each line separately. By placing \label{...} at each line \begin{equation} \begin{aligned} & \underset{X}{\text{minimize}} & & \mathrm{trace}(X) \label{eq:6}\\ & \text{subject to} && X_{ij} = M_{ij}, \; (i,j) \in \Omega, \label{eq:7} \\ & && X \succeq 0. \label{eq:9} \end{aligned} \end{equation} I get the error message: "Package amsmath Error: Multiple \label's: label 'eq:4' will be lost." How can I label each line individually? cross-referencing amsmath align share|improve this question edited Mar 23 '13 at 15:32 asked Mar 23 '13 at 8:54 Robinaut 401139 4 Using align environment instead of equation and aligned will work: \begin{align} & \max \sum p_t s_t \label{eq:3}\& \text{s.t. } s_t \leq d_t \label{eq:4}\& \sum s_t \leq I \label{eq:5} \end{align} –Peter Grill Mar 23 '13 at 9:14 I need the tighter alignment provided by the aligned environment. The original example did not show the relevant point, so I inserted another example. –Robinaut Mar 23 '13 at 15:30 add a comment

here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us TeX http://tex.stackexchange.com/questions/34749/how-to-show-two-groups-of-equations-side-by-side-one-implies-the-other - LaTeX Questions Tags Users Badges Unanswered Ask Question _ TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top How to show two groups of equations side by side: one implies the other? up vote 11 down vote favorite 4 I would like to show package amsmath a bunch of equations can imply another bunch of equations, with double right arrow in between. Here are two trials of mine: one is to use another level of math mode to enclose the two groups of equations, and the other is to use a table with each group of equation being in a cell. The first one $$ \begin{align*} \nabla f(x) -\mu X^{-1} e + A(x) \lambda - z = 0, \\ c(x) = 0, \\ -\mu X^{-1} e + z = 0, \\ x > 0 \\ package amsmath error z > 0 \end{align*} \quad \Longrightarrow \quad \begin{align*} \nabla f(x) + A(x) \lambda - 2z = 0, \\ c(x) = 0, \\ -\mu X^{-1} e + z = 0, \\ x > 0 \\ z > 0 \\ \end{align*} $$ This one will leads to error amsmath: Erroneous nesting of equation structures;(amsmath) trying to recover with `aligned'. \end{align*} Another is using tabular: \begin{tabular*}{c c c} \begin{align*} \nabla f(x) -\mu X^{-1} e + A(x) \lambda - z = 0, \\ c(x) = 0, \\ -\mu X^{-1} e + z = 0, \\ x > 0 \\ z > 0 \end{align*} & $\Longrightarrow$ & \begin{align*} \nabla f(x) + A(x) \lambda - 2z = 0, \\ c(x) = 0, \\ -\mu X^{-1} e + z = 0, \\ x > 0 \\ z > 0 \\ \end{align*} \end{tabular*} It doesn't compile either. I wonder how to make the two approaches workable, and if there are other better ways? equations amsmath share|improve this question edited Nov 14 '11 at 5:39 lockstep 161k38486646 asked Nov 14 '11 at 2:10 Tim 2,20872545 add a comment| 4 Answers 4 active oldest votes up vote 10 down vote accepted Here is another approach, with some braces added to "combine" the separate equation sets. Of course, these can be removed if needed. Each equation set is aligned along the binary relations in an rcl (right-center-left) fashion with the appropriate spacing. \documentclass{article} \usepackage{amsmath}% http://ctan.org/pkg/amsmath \begin{document} \begin{align*} \left.\begin{array}{r@{\mskip\thickmuskip}l} \nabla f(x) -\mu X^{-1} e + A(x) \lambda - z &= 0, \\ c(x) &= 0, \\ -\mu X^{-1} e + z &= 0, \\ x &> 0 \