Warum erhalte ich in einer Tabelle am Zeilenbeginn "Missing number, treated as zero"?

In dieser Tabelle mit array erhalte ich beim Übersetzen den Fehler ! Missing number, treated as zero.

Code, hier editierbar zum Übersetzen:

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\documentclass{article} 
\usepackage{amsmath}
\begin{document}
\[
  \begin{array}{ccc}
    \text{Notation} & \text{Bedeutung} & \text{Definition} \\
    [g,h] & \text{Kommutator} & g^{-1} h^{-1}  g h
  \end{array}
\]
\end{document}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Das passiert sogar, wenn ich tabular stattdessen verwende, hier auf ein Minimum reduziert:

Code, hier editierbar zum Übersetzen:

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\begin{tabular}{c}
  Kommutator \\
  [g,h]
\end{tabular}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Wie kann ich das beheben?

optionale-argumente tabellen

gefragt 03 Jul '13, 19:28

jan12
770●27●27●32
Akzeptiert-Rate: 100%

bearbeitet 03 Jul '13, 20:07

saputello
11.1k●17●43●65

@jan12 Sehr schön analysierte Problembeschreibung und eines wichtige Fragen!

(03 Jul '13, 20:09) saputello

Eine Antwort:

active answers älteste Antworten neueste Antworten Beliebteste Antworten

Die Anweisung \tabularnewline, die bei Tabellen letztlich hinter dem \\ steckt, kennt ein optionales Argument für einen zusätzlichen vertikalen Abstand. Da Leerzeichen vor optionalen Argumenten überlesen werden und einzelne Zeilenenden für TeX nichts anderes als Leerzeichen sind, wird

Code, hier editierbar zum Übersetzen:

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Kommutator \\
[g,h]
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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genau wie

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Kommutator\\[g,h]
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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behandelt. Damit wird also [g,h] zum optionalen Argument von \\. Da dieses Argument aber keine Länge und keinen Längenwert darstellt, wird die Fehlermeldung ! Missing number, treated as zero. erzeugt.

Lösung ist in solchen Fällen, das Einfügen von \relax:

Code, hier editierbar zum Übersetzen:

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Kommutator \\\relax
[g,h]
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Durch das \relax wird die Suche nach einem optionalen Argument beendet. Da Leerzeichen und Zeilenenden nach einer Anweisung ignoriert werden, führt es im Gegensatz zu einem {} auch nicht dazu, dass unerwünschte Leerzeichen in der Ausgabe erscheinen.

Alternativ könnte man natürlich auch einen zusätzliche Null-Längen-Wert angeben:

Code, hier editierbar zum Übersetzen:

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Kommutator \\[0pt]
[g,h]
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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beantwortet 03 Jul '13, 20:04

saputello
11.1k●17●43●65
Akzeptiert-Rate: 51%

verwende aus amsmath die Umgebung matrix; sie testet vorher, ob eine Längenangabe folgt oder nicht:

Code, hier editierbar zum Übersetzen:

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\documentclass{article} 
\usepackage{amsmath}
\begin{document}
\[
  \begin{matrix}
    \text{Notation} & \text{Bedeutung} & \text{Definition} \\
    [g,h] & \text{Kommutator} & g^{-1} h^{-1}  g h
  \end{matrix}
\]
\end{document}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Permanenter link

beantwortet 03 Jul '13, 20:46

Herbert
5.1k●3●4
Akzeptiert-Rate: 31%

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tabellen ×258
optionale-argumente ×7

gestellte Frage: 03 Jul '13, 19:28

Frage wurde gesehen: 16,931 Mal

zuletzt geändert: 03 Jul '13, 20:46

Warum erhalte ich in einer Tabelle am Zeilenbeginn "Missing number, treated as zero"?

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