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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13
votes
2answers
4k views

Nesting subequations within align

subequations seems to only work outside environments such as align and equation. What if I want to preserve the alignment of the equal signs using align while also would like subequations numbering ...
11
votes
4answers
889 views

Equation number for each row of a matrix equation

Is it possible to give an equation number to each row of a matrix equation? How could I have equation labels in the vein of subequation numbers, one for each row of the matrix equation? Here, I'd ...
10
votes
2answers
1k views

Cleveref: Parentheses around references to subequations using \labelcref

Using the Cleveref package (v0.19) i have a problem with missing parentheses when referencing to subequations, using the \labelcref command. Here is a MWE: \documentclass{article} ...
8
votes
1answer
609 views

\eqref to give reference to a sequence of subequations

Suppose I have the following code \begin{subequations} \begin{align} a+b = c \label{eq.1}\\ d+e = f \label{eq.2} \end{align} \end{subequations} I want now that upon giving the reference, it ...
8
votes
1answer
2k views

Hyperlinking problems when using subequations, hyperref and cleveref

The problem Hi. I'm currently writing my thesis and have my equations numbered within sections. I also use subequations from amsmath. When I use amsmath, hyperref and cleveref together, however, I ...
7
votes
2answers
4k views

Subequation aligning using matrix

When I use multiple matrix equations in subequation, I am doing it as in the code snippet. However, when I want to align the equations with respect to equal sign, = (commented in the code), I am ...
7
votes
1answer
655 views

numbering parentequation of subequations

I would like to change the numbering of the parent equation of the subequations. \begin{subequations} \label{eq:Parent} \begin{align} a& \label{eq:1}\\ b& \label{eq:2} \end{align} ...
7
votes
1answer
63 views

Subequations with more than 26 items

I need any solution to this problem. I have a subequations environment with an align environment inside of it, and then a bunch of equations. A lot of equations. Actually more than 26. When I try to ...
7
votes
0answers
81 views

Advanced Math and braille

How does one go about typesetting math books in braille with all parenthesized subscripts and superscripts and are there braille signs for the AmsMath package special symbols?
6
votes
3answers
1k views

subequations align

Can anyone help me fix this problem? Actually, there is no need to have 1(b), 1(d), 1(f) and 1(h) since they are deriving from the last line. Can I have just four subequations? ...
6
votes
3answers
439 views

Enumerate equations in an array after a curly brace

How to enumerate two equations that go after a curly brace? How to make the enumeration use digits and letters, so two equations have number 1.a and 1.b? \documentclass{article} \usepackage{amsmath} ...
6
votes
2answers
164 views

How to avoid extra equation numbers while using subequations?

I searched through the web but I could not find the solution to my question: I try to write equation in the following format: TYPE a: A = {mathematics relation-a} 3.1 TYPE b: B = {mathematics ...
6
votes
2answers
230 views

Reference to subequation forces serif font; how to work around?

I'm using the subequations environment in a book in which some text is in sans serif font. When I have a reference to a subequation, the reference comes out in a serif font, even if the surrounding ...
6
votes
2answers
2k views

Number of Equation: 1, 1a, 1b

Following Problem: I have a PDE and two boundary conditions what i actually want is: PDE (1) BC1 (1a) BC2 (1b) and what i have is: PDE (1) BC1 (2a) BC2 (2b) is there something which provides a ...
6
votes
1answer
741 views

Subequations inside align result in too wide equation

I want to create subequations and allign them such that nice 'inquality constraints' arise. My current code: \begin{subequations} \begin{align} a & \le b & \le c \label{eq:constr1}\\ d & ...
6
votes
1answer
1k views

Equation numbers for boxed multiline equations

I am attempting to set a box around multiline equations is LaTeX using the following code: \documentclass{article} \usepackage{empheq} \newcommand*\widefbox[1]{\fbox{\hspace{2em}#1\hspace{2em}}} ...
5
votes
4answers
179 views

Annoying long equations in LaTeX

I am giving up on this long and annoying equation. I tried in so many different ways to try to fit into my page, but no success so far...Any suggestions, please? How to break down this long equation ...
5
votes
2answers
165 views

Small indentation after labelled subequations

I am trying to reference a set of equations that are placed within a alignat and subequations environments. I would like to reference them as Eq. 1 together, rather than Eqs. 1a and 1b separately. The ...
5
votes
4answers
247 views

number a system of 4 equations in 2 lines

I have written 4 equations in two lines and I want to give a single number for all of them without changing their format. My code for the equations is the following: \begin{center} ...
5
votes
2answers
1k views

subequations customize arabic numbering in aligned environment

i've a rather simple problem for the experts out there! :) using subequations, it automatically enumerates the subequations in alphabetic order. is there a way to obtain instead an ...
5
votes
1answer
153 views

Subequations with main equation number

I would like to have a set of equations, all under the same number, but with a "main" equation, and some other equations that follow being labelled with subnumbers, for example 1 = 1 ...
5
votes
1answer
855 views

Mathtools' showonlyrefs fails with subequations

For the code \begin{subequations}\label{eq:sub} \begin{gather} \frac{\text{d}b_1}{\text{d}z} - \im\beta_1b_1 = C_{12}b_2,\\ \frac{\text{d}b_2}{\text{d}z} - \im\beta_2b_2 = C_{21}b_1. ...
5
votes
1answer
77 views

cleveref and aliascnt: referring to subequations and inequalities in a smart way

Preliminary Remark: A document may contain labels referring to equations and subequations, respectively. Moreover, some of the equations may actually represent inequalities. When using the cleveref ...
4
votes
2answers
8k views

Sub-numbering equations within array

I'm using the array environment to give multiple definitions of some value, let's call it x. I can easily get a reference to all 3 definitions together, but I want each one to have its own reference. ...
4
votes
3answers
1k views

Interrupting and resuming subequations

As the title states I would like to interrupt and resume a block of equations that is inside a subequations regime. My problem arises when the interrupting stuff shall contain equations on its own: ...
4
votes
2answers
2k views

Equations aligned center

The following code \begin{equation} \label{eq:test} \begin{aligned} A=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\ B=BBBBBBBBBBBBBBBB\\ C=CCCCC, D=DDDDDDD\\ E=EEEEE, F=FFFFFFF \end{aligned} ...
4
votes
2answers
83 views

How do i `\tag` a subequations environment as a whole? [duplicate]

I have a similar subequations environment as in the mwe \documentclass{article} \usepackage{amsmath} \begin{document} \begin{subequations}\label{eq:w} %\tag{myEQ} \begin{align} a &= b ...
4
votes
1answer
110 views

Amsmath double line equation alignment centered

I need an equation that consists of three parts (or one equation including 3 equations in total), it should look like this: My code for now gives me the following: So I would like to have the two ...
4
votes
1answer
184 views

Hidden reference to equation

How to make a hidden reference to an equation, such that \mathtoolsset{showonlyrefs=true} is overridden (assuming it is active)? Alternatively, how to switch off showonlyrefs temporarily (regardless ...
4
votes
1answer
393 views

Why is there a larger vertical space after the first subequation?

I am using the subequations environment and observe non-uniform vertical spacing between subequations. Specifically, the space between the first and second equation is larger than the other spaces. ...
4
votes
1answer
672 views

Subequations, tags and numbering

I have a problem with the following code. \begin{subequations} \begin{empheq}{align} & a = b \label{E1} \\ & c = d \label{E2} \end{empheq} \end{subequations} \begin{subequations} ...
4
votes
2answers
579 views

Customizing subequations numbering in itemized list

This is a follow-up on the question subequation numbering in itemized list. \documentclass[10pt]{article} % for fancy math \usepackage{amsmath} % rank operator \DeclareMathOperator*{\rank}{rank} % ...
4
votes
3answers
2k views

Center subequation of multiple lines

I would like to keep my style of subequations but I also would like to center these subequation, which is on multiple lines (because it's length). So that means, the second part/line of the ...
4
votes
1answer
217 views

Center some lines within an alignat environment nested in subequations environment

For typesetting a mathematical program I use the subequations environment to number the equations. The restrictions are aligned using the alignat environment (see MWE1). What I would like to achieve ...
4
votes
2answers
319 views

How to align long subequations while breaking each one?

I want to align all the terms of two similar subequations, but the problem is that each one is long enough to need breaking. The problem is that after breaking \align tries to align every line with ...
3
votes
2answers
969 views

subequations and array in braces

I need something like this: \left\{ first line (1a) second line (1b) third line (1c) \right. all lines should be aligned to left
3
votes
1answer
302 views

To have nice tabbed text next to equations?

I want I have at the moment by \documentclass{article} \usepackage{amsmath} \begin{document} \begin{subequations} \begin{equation} \omega_c = \sqrt{\omega_{0}^{2} - \mu^{2}}, \mu < ...
3
votes
3answers
436 views

subequation numbering in itemized list

This is what I generated for a set of equivalent definitions of positive semi-definiteness. \documentclass[10pt]{article} % for fancy math \usepackage{amsmath} % rank operator ...
3
votes
2answers
67 views

Label terms of LaTeX equation [duplicate]

I'm interested in labelling my latex equation, by giving the physical phenomenon contributing to the term. For instance x = f(y) + g(y). So a horizontal curly bracket to explain that f(y) is derived ...
3
votes
2answers
123 views

Refer to the “name” of an equation, while a List of Equations is generated using these names

I link two questions below because I use their solution, to number my equations and generate a list of my equations. My question about numbering equations: Number of Equation: 1, 1a, 1b Generate a ...
3
votes
1answer
90 views

Subequation behavior for ungrouped equations?

I have several equations at different places in my paper, and I want to number them as I would using subequations, e.g. 1.a, 1.b, 1.c, 1.d. The problem is that they do not follow each other ...
3
votes
2answers
370 views

Number equations within array

I want to number sub-items of an array I have in order to refer to the right equation and not to the set of equations (SEE the pictures attached): Figure that should call 1.35a, 1.35b, 135.c, 1.36a, ...
3
votes
1answer
241 views

Labelled subequations in table with multiple equations per row

I'm trying to make a table containing 4 equations in which the two in the left column are labelled 1a and 1b, and the two in the right column are labelled 2a and 2b. I've been able to construct such ...
3
votes
3answers
31 views

Error with ifacconf.cls and subequations with more than twelve equations

I'm working on a paper for an IFAC conference for which you're supposed to use their ifacconf.cls, resulting in a fairly standard layout. However, you get an error when you use subequations (amsmath) ...
3
votes
1answer
73 views

Align equations with multiple subequation groups

I usually use the subequations environment with a nested alignso I can have nicely aligned equations with that neat 1a, 1b, 1c, etc. numbering and that's fine. But now I would want to still align ...
3
votes
1answer
53 views

hyperref pointing to the wrong equation using subequations

I'm using the following code to write an article, but I'm having some problems cross-referencing the equations with hyperref. The \eqref{} code returns the right equation's number. But the hyperlinks ...
3
votes
2answers
253 views

How to number subequations separately from the main equation?

I would like to produce in report class the following style for numbering subequations: The main equation has its own number, and can be referenced. Each subequations are labelled with lower case ...
3
votes
1answer
232 views

Using subequations without amsmath

Following on from my previous question regarding the use of align and aligned without 'amsmath', I am currently working on a proceedings paper, and have realised after finishing it that only specific ...
3
votes
1answer
28 views

Special full stop with subequations

With this code: Si scriverà, pertanto: \begin{subequations} \label{eq:laplace-2} \begin{align} & Z (s^2 M + s C_s + K_s) = Z_u (s C_s + K_s)\\ & Z_u (s^2 m + s C_s + K_s + K_t) = ...
3
votes
1answer
250 views

Equation numbers under equations

I have three similar equations which I want on a same line. I put them in tabular environment nested within subequations following this: subequation in tabular. Now I have this code: ...