[Tex/LaTex] svmono template and `\mathcal`

fontsmathcalsv-classes

Why, with Springer's svmono template, do the letters written with the \mathcal font change? It seems that \mathcal becomes \mathscr.

Edit:
Look at this image:

enter image description here

With the svmono template \mathcal returns the first alphabet and not the (classical) latter.

Here the packages I use in my document:

\documentclass[envcountsame,envcountchap]{svmono} 
\usepackage{subfiles}
\usepackage[utf8]{inputenc} 
\usepackage{mathptmx}
\usepackage[bottom]{footmisc}
\usepackage{microtype}
\usepackage{stmaryrd}   
\usepackage{amsmath}
\usepackage{courier}
\usepackage{mathrsfs} 
\usepackage{amssymb} 
\usepackage[all,cmtip]{xy}
\usepackage{faktor}
\usepackage{graphicx}
\usepackage{mathdots}
\usepackage[colorlinks={true},linkcolor={blue},citecolor={blue}]{hyperref}
\usepackage[frame,width=15truecm,height=23.5truecm,center]{crop}

With this settings I have the above strange behavior of \mathcal.

Best Answer

The mathptmx package draws its calligraphic letters from the RSFS font, which explains the behavior you get, which has nothing to do with the svmono class.

Minimal example:

\documentclass{article}
\usepackage{mathptmx}
\begin{document}
$\mathcal{ABCDEF}$
\end{document}

enter image description here

If you want to reinstate the Computer Modern calligraphic letters, add

\DeclareMathAlphabet{\mathcal}{OMS}{cmsy}{m}{n}

to your preamble.

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