Questions tagged [subequations]

The {subequations} environment provided by the amsmath package alters the numbering of equations within it to occur in a sequence such as (1a), (1b), .... This tag is not about general embedding of equations within other equations.

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2
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1answer
75 views

Nesting subequations within align plus the usage of cleveref

I am using the solution for nested subequations with alignment (“The subequations environment & the parentequation counter”). I would like to use cleveref package references with groups of ...
2
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3answers
137 views

How to change the sub-tags of Equations and the cross-references accordingly?

I am trying to modify the following labels for the letters to be capital letters. I also need the cross-references (using cleverref) to match the newly defined style. There are several related ...
3
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1answer
276 views

Mixed subequations in align with ability to refer to parent equation

I've been using the answers developed in this question in order to have mixed equations and sub-equation numbering inside of an align environment, MWE: \documentclass[12pt]{article} \usepackage{...
2
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1answer
641 views

braced equation with multiple lines on right side, with equation numbers

I thought I'd come across a solution for my question but surprisingly (to me) I did not. I hoped an example would have been in https://en.wikibooks.org/wiki/LaTeX/Advanced_Mathematics but maybe it ...
2
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1answer
445 views

Multiple equations in one line with proper referencing

I am looking for a way to have several equations in the same line, and being able to reference them. I know this can be done for multiple rows with eqnarray, but I want it in one line. I have the ...
1
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1answer
640 views

How to reuse an equation number and continue numbering from previous subequation environment

Herein in my given code, I am having four equations which are getting numbered as, 1a, 1b, 2a and 2b respectively. I want them to get numbered as 1a, 1b, 1b and 1c (because if you check then eq.1b and ...
2
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0answers
180 views

How to remove vertical space when subequations are used along with empheq?

I am using empheq along with subequations as given in the MWE. However, the use of subequations create a vertical space between the paragraph and equation as shown in figure, which I don't want. I ...
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2answers
316 views

Subequation: Counter too large and alphalph does not work [duplicate]

I have an urgent question. I am writing a document and I have equations (but they are more than 26). I get the error 'counter too large'. I saw in other topics that I need to use alphalph package but ...
1
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1answer
2k views

How to center subequations and maintain sub-numbering

I'm trying to get a subequation with 3 lines to have all equations centered horizontally relative to each other. Right now I have: \begin{subequations}\label{eq:propArea} \begin{alignat}{2} ...
2
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2answers
432 views

Subsections separated in different sections with same main numbering

The problem is I want to place a set of equations in different section in the article, and label them with same main number in \subequations environments. As I found in relevant questions, I can put ...
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3answers
739 views

flush text on the left and centre equation of the same line (not working!)

I want to have the "Mass" and "Momentum" text part aligned to the left side of the page (where you see 'steady' and 'version' from the previous paragraph), while keeping the equations on the same line ...
2
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1answer
351 views

One reference to equations and subequations

Within my document I need to refer to two equations and to the overall label of subequations. I have the packages hyperref and cleverref included in the structure of the document. However latex gives ...
3
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2answers
735 views

Linebreak in subequations environment

I use align within subequations and this works fine for normal length equations. However I would like to break this long equation into two or three parts. Currently I use \\ to break the long ...
3
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3answers
1k views

How to typeset aligned equations with a curly brace to the left and subnumbering

I want to typeset multiple equations that are aligned by the '=' sign are combined by a curly brace to the left have 'subnumbering'. They should look like { a = b (1.1)a { c = d (1.1)b { e = f ...
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0answers
56 views

Subequation is adding a random 9 to the end of my equation [closed]

Here is the full equation block: \documentclass[12pt, English]{article} \usepackage{amsfonts,amsmath,amssymb} \usepackage{epsf, subfigure, verbatim, epsfig} \usepackage{lineno, color} ...
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2answers
166 views

How to add text before the subequations?

I am translating a book into Chinese, and it doesn't provide the latex file of the book. How to add text before the subequations? This is my code for it \parbox{8.5em}{ predictor: \\ Kalman ...
0
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1answer
872 views

Labels in subequations

I have the following system of equations \begin{subequations}\label{eq} \begin{align} &\alpha_x = \dots\label{eqa}\\ &\beta_x = \dots\label{eqb}\\ &\gamma_x = \dots\...
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2answers
324 views

Aligning consecutive align environments and keep equation numbering

I have the following latex code: \documentclass[12pt,letterpaper]{article} \usepackage{amsmath} \usepackage{amssymb} \begin{document} \begin{subequations} \begin{align} \Phi_1^l(r)&=-(2l+1)\frac{...
0
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2answers
121 views

Equation refuses to move leftward, past the first line

I suspect people have already asked this question, but: I have a really long multiline equation, inside an align environment, which is inside a subequation environment. Each line of the equation is ...
2
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1answer
211 views

How can I customize equations numbering in subequations enviroment?

In the figure above, the subequations part of numbering is alphabetical, but I want to customize both the equation and the subequation part to look like this: a-I, a-II, and a-III. Here is the source ...
3
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1answer
258 views

How to number automaticaly a family of equations (and ref to them)

The question will be self answered and it is simple. Sometimes, we need to create a family of equations with the same number but with something different (an extra counter or something) For example I ...
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2answers
332 views

How can I enumerate an expression within $$ … $$?

Can someone help me, I want to enumerate my mathematical expressions that I wrote inside $$ ... $$. $$y=f( \sum_{i=1}^{N} w_ix_i+w_0)$$ I used \align but it doesn't work, I even used \begin{equation}...
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3answers
224 views

Formatting a system of equations with one on multilines

I'm trying to write a system of 3 equations, subnumerated, left-aligned with a big left brace, compiled with pdflatex. So far I tried the subequations with empheq environment: \begin{subequations} \...
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2answers
1k views

fit long equation into one line

I think this equation will fit into one line, but I'm running out of space in the editor. I don't want to split the equation (I don't think I will need to) \begin{subequations} \begin{align} \nu_{p} ...
2
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1answer
65 views

How to squeeze space around these subequations?

I have two subequations as follows. I need to squeeze space before and after "and". MWE: \documentclass[journal]{IEEEtran} \usepackage{mathtools} \usepackage{amsmath} \begin{document} \begin{...
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2answers
13k views

Typesetting an optimisation problem

I am quite new to LaTeX and want to typeset a optimisation problem. I found a very neat example at https://jcnts.wordpress.com/2009/11/11/formatting-optimization-problems-with-latex/: The only ...
1
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1answer
2k views

numbering a system of equations [duplicate]

How can I add a number to the following system of equations so that the first equation take the number (1.a) and the second (1.b)? \begin{equation} \left\{ \begin{array}{l} \begin{aligned} x_k & ...
0
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1answer
42 views

How to work out as in picture!

Can you show me how to work out as in picture? Thank you!
1
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1answer
61 views

Hiding tag in a subequations and align environment also centring

I need to hide tags inside subequations and align environments. I do not want to use \tag{}, the tag should be placed automatically when I typeset. Here it is, \begin{subequations} \begin{align} H(x,...
1
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1answer
714 views

How to align an equation within a \begin align block?

Right now I have a piece of code which generates the following two equations \documentclass{article} \usepackage[utf8]{inputenc} \usepackage{amsthm} \usepackage{amsmath} \usepackage{thmtools} ...
1
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1answer
654 views

\end{align} error due to equation

Currently I have a a set of equations with nested text in between them using intertext, however I have a problem with the last equation refusing to output (eq:4.3) \documentclass[10pt]{article} \...
3
votes
1answer
2k views

How to make subequations

I need equation (1) followed by equation (1.a), (1.b), etc. But I am getting equation (1), then (2.a) (2.b), etc. \documentclass{llncs} \usepackage{amsmath} \usepackage{placeins} \begin{document} \...
2
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1answer
191 views

Multiple equation of different length within a cell

I have something of the form \documentclass[11pt]{article} \usepackage[utf8]{inputenc} \usepackage[T1]{fontenc} \usepackage[english]{babel} \usepackage{amsmath} \usepackage{mathtools} \begin{...
1
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1answer
152 views

“subreactions” with chemmacros reactions module

I would like to use something like subequations within the reactions environment provided by chemmacros. Something like this: A -> B {1a} B -> C {1b} C -> D {1c} This doesn't work: \...
3
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2answers
275 views

How to make two (possibly far away) equations be numbered as subequations?

I have the following Latex equations: \begin{subequations}\label{eq:e1} \begin{equation} z = \min_x\{c^Tx + W(x), x\geq 0\} \end{equation} \end{subequations} some text as long as a paragraph \begin{...
4
votes
2answers
692 views

Is subequations known to introduce vertical white space? [duplicate]

In this MWE, there is additional white space between the line of text and the following subequations environment. It disappears when I unload hyperref, when I remove the wrapping subequations ...
4
votes
1answer
2k views

Left and centre alignment when using subequation and align environments

I have {amsmath},{amssymb} packages. The code : \begin{subequations} \begin{align} u_0(x) = \frac{x} {y (x-b)^2 + z} , \qquad \qquad \qquad \qquad \\ u_1(x) = \frac{-2 (m + n + k)}{y (x-b)^2 + z} +...
1
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2answers
205 views

Adding a new line in a part of an equation

I am facing problem in writing the \underset part of the \sum of the following equation (i.e. path($u^{(\pi_1)},u^{(\pi_2)},\dots,u^{(\pi_t)}$), from $\pi_1=j$ to $\pi_t=n$}) I want it to break in ...
2
votes
2answers
879 views

Subequations and align: ERROR: Package amsmath Error: \tag not allowed here?

I have an issue with my optimization problem. It is given in the following. \documentclass{article} \usepackage[english]{babel} \usepackage{amsmath} \usepackage{amssymb} \usepackage{...
0
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1answer
170 views

Paragraph writing within subequations and equations

i had an issue with writing a paragraph within the equation having subequations as given in snap shot..thanks in advance...
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1answer
457 views

how to remove equation label in subequation?

I have the following commands to create 2 lines of equation. The first line contains 4 equations therefore it should be labeled as (1a-d). The second line contains 2 equations therefore it should be ...
2
votes
2answers
599 views

Align, equation numbering

I try to get a equation like this: This is my code: \documentclass{scrartcl} \usepackage[a4paper]{geometry} \usepackage[ngerman]{babel} \usepackage[utf8]{inputenc} \usepackage[T1]{fontenc} \...
2
votes
4answers
2k views

align for subequations

The output with the code is all wrong. How can I get it to start "X" centimeters from the left margin? \documentclass[11,fleqn]{article} \usepackage{verbatim} \usepackage{caption} \usepackage{amsmath}...
1
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1answer
497 views

multiple single line equations with part of text

I am not able to align them properly. How can I have multiple line equation, with each equation is labeled properly. Here is an example: \documentclass{article} \usepackage{amsmath} % for 'align*' ...
1
vote
1answer
635 views

Numbering sub-equations with a specific alignment

Please help me to get following set of equation such that I want to number only A_1(\alpha,\beta) \geq r_1;~B_1(\alpha,\beta) \geq r_1 and A_2(\alpha,\beta) \geq r_2; ~ B_2(\alpha,\beta) \geq r_2 ...
3
votes
1answer
174 views

referring to Eqn. 1a) and 1b) in a sentence as eqn. (1)

I have two equations. [1a) and 1b)] And I want to refer these equations in a sentence as Eqn. (1). How can I do it? Thanks.
0
votes
2answers
213 views

Multicolumn changes equation numbering indentation

I want to display a mathematical problem definition in LaTeX. I know there are several ways to do this, but I would still like to get this method working. Here is a minimal example. The real equations ...
1
vote
2answers
639 views

How to place equation number below formula?

I have 3 matrices and I want them to be in one row, with a reference number below each matrix. How do I get the equation number below a formula? (similar to subfigure) From the comments: - I want to ...
4
votes
2answers
293 views

underbrace in each subequations in align environment

I have \usepackage{romannum} \usepackage{amsmath} \usepackage{mathtools} How is it possible to write using \begin{subequations} \begin{align} ... \end{align} \end{subequations} The code is ...
2
votes
0answers
333 views

How to create new environment based on subequations

I've created new environment based on equation for chemical reactions that use roman numbers. I would like to create another environment based on subequations that use this numbering format. Below you ...