Mfcttrf

Is it okay for me to decline a project on ethical grounds?

Piece of chess engine, which accomplishes move generation

Just how much information should you share with a former client?

Why does aggregate initialization not work anymore since C++20 if a constructor is explicitly defaulted or deleted?

Can Papyrus be folded?

Is it unprofessional to mention your cover letter and resume are best viewed in Chrome?

What is the reason for cards stating "Until end of turn, you don't lose this mana as steps and phases end"?

Why did I lose on time with 3 pawns vs Knight. Shouldn't it be a draw?

Why tantalum for the Hayabusa bullets?

Can I attune a Circlet of Human Perfection to my animated skeletons to allow them to blend in and speak?

Should I intervene when a colleague in a different department makes students run laps as part of their grade?

Why would an invisible personal shield be necessary?

Surviving a planet collision?

How did astronauts using rovers tell direction without compasses on the Moon?

How do I make my photos have more impact?

Why did House of Representatives need to condemn Trumps Tweets?

Can a US President, after impeachment and removal, be re-elected or re-appointed?

How can I kill my goat?

If the Moon were impacted by a suitably sized meteor, how long would it take to impact the Earth?

Why did Windows 95 crash the whole system but newer Windows only crashed programs?

Why is softmax function used to calculate probabilities although we can divide each value by the sum of the vector?

Omnidirectional LED, is it possible?

What are the cons of stateless password generators?

What does 気持がある mean?

how to understand the error info “Illegal parameter number in definition of reserved@a. …t2+cdots+sqrt2}}_n项 , cdots 收敛.$}”

How to number the ToC?How to disable the prompt on error?How do I remove the chapter number from my Index 'chapter' in the ToC?Making a table of content for LaTeXWhy is pdfpages' addtotoc option giving me «Illegal parameter number in definition of AM@temp» error message?How can I put the section or chapter number in the section or chapter titleHow can I change the style of the section number?How to make an entry in the table of contents for the bibliographyHow do i remove the chapter number from a section?How to use the symbol angle at the section title

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

1

error info:

Illegal parameter number in definition of reserved@a. ...t2+cdots+sqrt2}}_n项 , cdots 收敛.$}

this line's content:

section$证明极限:x_1=sqrt2, x_2=sqrt2+sqrt2, cdots x_n=underbracesqrt2+sqrt2+cdots+sqrt2_n项 , cdots 收敛.$

how to understand the error info?

what is "Illegal parameter number" refers to ?

I put it in section because I want it show in contents.

I think that the Chinese characters is OK in math mode, and math mode in section is OK too, because I did this many times only this one has error.

table-of-contents sectioning compiling compilation-error

share|improve this question

edited 8 hours ago

nevermind_15

asked 8 hours ago

nevermind_15nevermind_15

1122 bronze badges

New contributor

nevermind_15 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Just out of idle curiosity: Why do you place a long equation inside a section instruction?
  
  – Mico
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Are you sure about the Chinese characters in math mode?
  
  – egreg
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Equation in section seems very uncommon :)
  
  – Dr. Manuel Kuehner
  7 hours ago
  

  
  
  
  

add a comment | 

1

error info:

Illegal parameter number in definition of reserved@a. ...t2+cdots+sqrt2}}_n项 , cdots 收敛.$}

this line's content:

section$证明极限:x_1=sqrt2, x_2=sqrt2+sqrt2, cdots x_n=underbracesqrt2+sqrt2+cdots+sqrt2_n项 , cdots 收敛.$

how to understand the error info?

what is "Illegal parameter number" refers to ?

I put it in section because I want it show in contents.

I think that the Chinese characters is OK in math mode, and math mode in section is OK too, because I did this many times only this one has error.

table-of-contents sectioning compiling compilation-error

share|improve this question

edited 8 hours ago

nevermind_15

asked 8 hours ago

nevermind_15nevermind_15

1122 bronze badges

New contributor

nevermind_15 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Just out of idle curiosity: Why do you place a long equation inside a section instruction?
  
  – Mico
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Are you sure about the Chinese characters in math mode?
  
  – egreg
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Equation in section seems very uncommon :)
  
  – Dr. Manuel Kuehner
  7 hours ago
  

  
  
  
  

add a comment | 

error info:

Illegal parameter number in definition of reserved@a. ...t2+cdots+sqrt2}}_n项 , cdots 收敛.$}

this line's content:

section$证明极限:x_1=sqrt2, x_2=sqrt2+sqrt2, cdots x_n=underbracesqrt2+sqrt2+cdots+sqrt2_n项 , cdots 收敛.$

how to understand the error info?

what is "Illegal parameter number" refers to ?

I put it in section because I want it show in contents.

I think that the Chinese characters is OK in math mode, and math mode in section is OK too, because I did this many times only this one has error.

table-of-contents sectioning compiling compilation-error

share|improve this question

edited 8 hours ago

nevermind_15

asked 8 hours ago

nevermind_15nevermind_15

1122 bronze badges

New contributor

nevermind_15 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

Illegal parameter number in definition of reserved@a. ...t2+cdots+sqrt2}}_n项 , cdots 收敛.$}

section$证明极限:x_1=sqrt2, x_2=sqrt2+sqrt2, cdots x_n=underbracesqrt2+sqrt2+cdots+sqrt2_n项 , cdots 收敛.$

share|improve this question

edited 8 hours ago

nevermind_15

asked 8 hours ago

nevermind_15nevermind_15

1122 bronze badges

New contributor

nevermind_15 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 8 hours ago

nevermind_15

asked 8 hours ago

nevermind_15nevermind_15

1122 bronze badges

New contributor

nevermind_15 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 8 hours ago

nevermind_15nevermind_15

1122 bronze badges

New contributor

nevermind_15 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 8 hours ago

nevermind_15nevermind_15

1122 bronze badges

2 Answers
2

active

oldest

votes

3

Whatever is the system you're using for Chinese (here I use xeCJK), you need to protect the fragile command underbrace.

Anyway, I find it a bad idea to have such a complicated set of formulas in a title. And no, don't use Chinese characters in math mode.

documentclassarticle
usepackage[hmargin=1cm]geometry
usepackageamsmath
usepackagexeCJK

begindocument

tableofcontents

section证明极限: $x_1=sqrt2$, $x_2=sqrt2+sqrt2$,ldots 
 $x_n=protectunderbracesqrt2+sqrt2+dots+sqrt2_ntext项$,ldots 收敛.

enddocument

share|improve this answer

answered 7 hours ago

egregegreg

758k9090 gold badges19831983 silver badges33323332 bronze badges

add a comment | 

2

Something like this?

documentclassarticle
usepackageamsmath,geometry
begindocument
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ times$, dots 

Large
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ mdseries times$, dots
enddocument


documentclassarticle
usepackageamsmath,geometry
begindocument
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ times$, dots 

Large % in lieu of 'section*'
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ mdseries times$, dots
enddocument

share|improve this answer

answered 8 hours ago

MicoMico

299k3232 gold badges411411 silver badges814814 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I put it in section because I want it show in contents
  
  – nevermind_15
  8 hours ago
  

  
  
  
  

add a comment | 

Your Answer

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "85"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);



);

nevermind_15 is a new contributor. Be nice, and check out our Code of Conduct.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2ftex.stackexchange.com%2fquestions%2f502171%2fhow-to-understand-the-error-info-illegal-parameter-number-in-definition-of-res%23new-answer', 'question_page');

);

Post as a guest

Name

Email

Required, but never shown

3

Whatever is the system you're using for Chinese (here I use xeCJK), you need to protect the fragile command underbrace.

Anyway, I find it a bad idea to have such a complicated set of formulas in a title. And no, don't use Chinese characters in math mode.

documentclassarticle
usepackage[hmargin=1cm]geometry
usepackageamsmath
usepackagexeCJK

begindocument

tableofcontents

section证明极限: $x_1=sqrt2$, $x_2=sqrt2+sqrt2$,ldots 
 $x_n=protectunderbracesqrt2+sqrt2+dots+sqrt2_ntext项$,ldots 收敛.

enddocument

share|improve this answer

answered 7 hours ago

egregegreg

758k9090 gold badges19831983 silver badges33323332 bronze badges

add a comment | 

3

Whatever is the system you're using for Chinese (here I use xeCJK), you need to protect the fragile command underbrace.

Anyway, I find it a bad idea to have such a complicated set of formulas in a title. And no, don't use Chinese characters in math mode.

documentclassarticle
usepackage[hmargin=1cm]geometry
usepackageamsmath
usepackagexeCJK

begindocument

tableofcontents

section证明极限: $x_1=sqrt2$, $x_2=sqrt2+sqrt2$,ldots 
 $x_n=protectunderbracesqrt2+sqrt2+dots+sqrt2_ntext项$,ldots 收敛.

enddocument

share|improve this answer

answered 7 hours ago

egregegreg

758k9090 gold badges19831983 silver badges33323332 bronze badges

add a comment | 

Whatever is the system you're using for Chinese (here I use xeCJK), you need to protect the fragile command underbrace.

Anyway, I find it a bad idea to have such a complicated set of formulas in a title. And no, don't use Chinese characters in math mode.

documentclassarticle
usepackage[hmargin=1cm]geometry
usepackageamsmath
usepackagexeCJK

begindocument

tableofcontents

section证明极限: $x_1=sqrt2$, $x_2=sqrt2+sqrt2$,ldots 
 $x_n=protectunderbracesqrt2+sqrt2+dots+sqrt2_ntext项$,ldots 收敛.

enddocument

share|improve this answer

answered 7 hours ago

egregegreg

758k9090 gold badges19831983 silver badges33323332 bronze badges

documentclassarticle
usepackage[hmargin=1cm]geometry
usepackageamsmath
usepackagexeCJK

begindocument

tableofcontents

section证明极限: $x_1=sqrt2$, $x_2=sqrt2+sqrt2$,ldots 
 $x_n=protectunderbracesqrt2+sqrt2+dots+sqrt2_ntext项$,ldots 收敛.

enddocument

share|improve this answer

answered 7 hours ago

egregegreg

758k9090 gold badges19831983 silver badges33323332 bronze badges

answered 7 hours ago

egregegreg

758k9090 gold badges19831983 silver badges33323332 bronze badges

answered 7 hours ago

egregegreg

758k9090 gold badges19831983 silver badges33323332 bronze badges

2

Something like this?

documentclassarticle
usepackageamsmath,geometry
begindocument
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ times$, dots 

Large
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ mdseries times$, dots
enddocument


documentclassarticle
usepackageamsmath,geometry
begindocument
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ times$, dots 

Large % in lieu of 'section*'
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ mdseries times$, dots
enddocument

share|improve this answer

answered 8 hours ago

MicoMico

299k3232 gold badges411411 silver badges814814 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I put it in section because I want it show in contents
  
  – nevermind_15
  8 hours ago
  

  
  
  
  

add a comment | 

2

Something like this?

documentclassarticle
usepackageamsmath,geometry
begindocument
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ times$, dots 

Large
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ mdseries times$, dots
enddocument


documentclassarticle
usepackageamsmath,geometry
begindocument
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ times$, dots 

Large % in lieu of 'section*'
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ mdseries times$, dots
enddocument

share|improve this answer

answered 8 hours ago

MicoMico

299k3232 gold badges411411 silver badges814814 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I put it in section because I want it show in contents
  
  – nevermind_15
  8 hours ago
  

  
  
  
  

add a comment | 

Something like this?

documentclassarticle
usepackageamsmath,geometry
begindocument
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ times$, dots 

Large
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ mdseries times$, dots
enddocument


documentclassarticle
usepackageamsmath,geometry
begindocument
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ times$, dots 

Large % in lieu of 'section*'
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ mdseries times$, dots
enddocument

share|improve this answer

answered 8 hours ago

MicoMico

299k3232 gold badges411411 silver badges814814 bronze badges

documentclassarticle
usepackageamsmath,geometry
begindocument
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ times$, dots 

Large
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ mdseries times$, dots
enddocument


documentclassarticle
usepackageamsmath,geometry
begindocument
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ times$, dots 

Large % in lieu of 'section*'
$x_1=sqrt2$, 
$x_2=sqrt2+sqrt2$, dots, 
$x_n=underbracesqrt2+sqrt2+dots+sqrt2_text$n$ mdseries times$, dots
enddocument

share|improve this answer

answered 8 hours ago

MicoMico

299k3232 gold badges411411 silver badges814814 bronze badges

answered 8 hours ago

MicoMico

299k3232 gold badges411411 silver badges814814 bronze badges

answered 8 hours ago

MicoMico

299k3232 gold badges411411 silver badges814814 bronze badges