\vspace (\section?) se comporta mal en el documento amsart

\vspace (\section?) se comporta mal en el documento amsart

En el siguiente ejemplo, quería reducir el espacio en blanco sobre el encabezado de la primera sección (parece estar colocado incorrectamente o al menos de manera variable), y cuando intento usarlo \vspace{}encima del primero \Section{}para realinearlo, no obtengo cambios usando \vspace{-0mm}hasta \vspace{-12mm}PERO luego El uso \vspace{-13mm}hace que la ubicación del texto del encabezado sea MUY alta (consulte las capturas de pantalla a continuación).

Curiosamente, este problema NO ocurre si fusiono los dos últimos párrafos de texto en un solo párrafo. Un texto diferente generará una cantidad razonable o extrañamente grande de espacio en blanco encima del título de la primera sección.

¿Alguien puede explicar por qué \vspace{}y/o \Section{}se están portando mal? ¡Gracias! :-)

\documentclass[11pt]{amsart}
\usepackage{fullpage} % fixes the annoyingly large default margins. 

\setlength{\parindent}{0pt}
\setlength{\parskip}{1em}
\setlength{\footskip}{10pt}
\setlength{\topmargin}{-0.5in}
\setlength{\headheight}{15pt}
\setlength{\headsep}{0.3in}
\setlength{\textheight}{9.05in}
\setlength{\footskip}{0.5in}


% For fancy header...
\usepackage{fancyhdr}
\usepackage{lastpage}
\pagestyle{fancy}
\lhead{Joe Public} 
\chead{{\large{\bf Document Title}}} 
\rhead{\thepage/\pageref{LastPage}}
\lfoot{} 
\rfoot{} 
\cfoot{}

% Emphasize the section titles more than the default
\newcommand{\Section}[1]{{\Large\section*{#1}}}


% First page
\fancypagestyle{empty}{%
  \fancyhf{}% Clear header/footer
  \fancyhead[C]{
    \textbf{\sc{\LARGE Document Title}}\\  \vspace{1mm}
    \sc{\large Joe Public}  \vspace{1mm}
  }% 
}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}

\thispagestyle{empty} % default is to keep first page plain...
\phantom{.} % Keeps text from starting right below the \hbar

Words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words.

\vspace{-12mm} % 0 to 12mm does NOT change \Section placement!?
%\vspace{-13mm} % But 13mm causes a BIG jump up... 

\Section{The First Section}

Words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words.


Words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words.

\Section{The Second Section}

Words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words.

Words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words words.

\end{document}

Aquí está la comparación de -0 mm y -12 mm (idéntico) a la izquierda, -13 mm a la derecha: Comparación de \vpsace{-12mm} y \vspace{-13mm} usando el código anterior.

Respuesta1

lo que está pasando aquí es que has tenido la mala suerte de encontrarte con la situación en la que dos líneas del párrafo "siguiente" (el que comienza en la página 2) no caben en la parte inferior de la página 1, por lo que la página se rompe después del primer párrafo de la sección 2, y el tramo previo a la cabeza de la sección (un tramo bastante grande) toma el relevo.

si realmente deseas modificar el espacio encima de los títulos (realmente deberías considerar disminuir el espacioabajolos encabezados de las secciones también, si ni siquiera con preferencia al espacio anterior), entonces debe modificar la definición básica de \section:

\def\section{\@startsection{section}{1}%
  \z@{.7\linespacing\@plus\linespacing}{.5\linespacing}%
  {\normalfont\scshape\centering}}

el comienzo del segmento .7\linespacingespecifica el espacio de arriba y (no estirable) .5\linespacingproporciona el espacio de abajo.

Estos valores se establecieron con el objetivo de tener páginas inferiores al mismo nivel cuando los encabezados de sección estén presentes en artículos de revistas en publicaciones de ams. Ha realizado cambios importantes en el diseño de la página, por lo que no se puede esperar que las configuraciones predefinidas se comporten como fueron diseñadas originalmente. las clases de documentos de ams no estaban destinadas a modificarse de esta manera, sino a cumplir rigurosamente con las especificaciones de publicación de ams.

De hecho, es posible que tengas más suerte usando article(en lugar de amsart) y cargando amsmathpara amsthmobtener resultados razonablemente comparables.

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