diff -r 6755d5ae9aeb -r 537de60474ec text/appendixes/comparing_defs.tex --- a/text/appendixes/comparing_defs.tex Tue Aug 03 17:07:50 2010 -0600 +++ b/text/appendixes/comparing_defs.tex Tue Aug 03 21:34:57 2010 -0600 @@ -137,9 +137,53 @@ We will define a ``horizontal" composition later. \begin{figure}[t] -\begin{equation*} -\mathfig{.73}{tempkw/zo1} -\end{equation*} +\begin{center} +\begin{tikzpicture} + +\newcommand{\vertex}{node[circle,fill=black,inner sep=1pt] {}} +\newcommand{\nsep}{1.8} + +\node[outer sep=\nsep](A) at (0,0) { +\begin{tikzpicture} + \draw (0,0) coordinate (p1); + \draw (4,0) coordinate (p2); + \draw (2,1.2) coordinate (pu); + \draw (2,-1.2) coordinate (pd); + + \draw (p1) .. controls (pu) .. (p2) .. controls (pd) .. (p1); + \draw (p1)--(p2); + + \draw (p1) \vertex; + \draw (p2) \vertex; + + \node at (2.1, .44) {$B^2$}; + \node at (2.1, -.44) {$B^2$}; + +\end{tikzpicture} +}; + +\node[outer sep=\nsep](B) at (6,0) { +\begin{tikzpicture} + \draw (0,0) coordinate (p1); + \draw (4,0) coordinate (p2); + \draw (2,.6) coordinate (pu); + \draw (2,-.6) coordinate (pd); + + \draw (p1) .. controls (pu) .. (p2) .. controls (pd) .. (p1); + \draw[help lines, dashed] (p1)--(p2); + + \draw (p1) \vertex; + \draw (p2) \vertex; + + \node at (2.1,0) {$B^2$}; + +\end{tikzpicture} +}; + +\draw[->, thick, blue!50!green] (A) -- node[black, above] {$\cong$} (B); + +\end{tikzpicture} +\end{center} \caption{Vertical composition of 2-morphisms} \label{fzo1} \end{figure} @@ -246,8 +290,6 @@ \newcommand{\vertex}{node[circle,fill=black,inner sep=1pt] {}} \newcommand{\nsep}{1.8} -\clip (-1,-1.5)--(12,-1.5)--(12,1.5)--(-1,1.5)--cycle; - \node(A) at (0,0) { \begin{tikzpicture} @@ -371,6 +413,9 @@ \newcommand{\vertex}{node[circle,fill=black,inner sep=1pt] {}} \newcommand{\nsep}{1.8} +\clip (-4,-1.25)--(12,-1.25)--(16,1.25)--(-1,1.25)--cycle; + + \node[outer sep=\nsep](A) at (0,0) { \begin{tikzpicture} \draw (0,0) coordinate (p1); @@ -463,12 +508,50 @@ \end{figure} We identify a product region and remove it. -We define horizontal composition of 2-morphisms as shown in Figure \ref{fzo5}. +We define horizontal composition $f *_h g$ of 2-morphisms $f$ and $g$ as shown in Figure \ref{fzo5}. It is not hard to show that this is independent of the arbitrary (left/right) choice made in the definition, and that it is associative. \begin{figure}[t] \begin{equation*} -\mathfig{.83}{tempkw/zo5} +\raisebox{-.9cm}{ +\begin{tikzpicture} + \draw (0,0) .. controls +(1,.8) and +(-1,.8) .. node[above] {$b$} (2.9,0) + .. controls +(-1,-.8) and +(1,-.8) .. node[below] {$a$} (0,0); + \draw[->, thick, orange!50!brown] (1.45,-.4)-- node[left, black] {$f$} +(0,.8); +\end{tikzpicture}} +\;\;\;*_h\;\; +\raisebox{-.9cm}{ +\begin{tikzpicture} + \draw (0,0) .. controls +(1,.8) and +(-1,.8) .. node[above] {$d$} (2.9,0) + .. controls +(-1,-.8) and +(1,-.8) .. node[below] {$c$} (0,0); + \draw[->, thick, orange!50!brown] (1.45,-.4)-- node[left, black] {$g$} +(0,.8); +\end{tikzpicture}} +\;=\; +\raisebox{-1.9cm}{ +\begin{tikzpicture} + \draw (0,0) coordinate (p1); + \draw (5.8,0) coordinate (p2); + \draw (2.9,.3) coordinate (pu); + \draw (2.9,-.3) coordinate (pd); + \begin{scope} + \clip (p1) .. controls +(.6,.3) and +(-.5,0) .. (pu) + .. controls +(.5,0) and +(-.6,.3) .. (p2) + .. controls +(-.6,-.3) and +(.5,0) .. (pd) + .. controls +(-.5,0) and +(.6,-.3) .. (p1); + \foreach \t in {0,.03,...,1} { + \draw[green!50!brown] ($(p1)!\t!(p2) + (0,2)$) -- +(0,-4); + } + \end{scope} + \draw (p1) .. controls +(.6,.3) and +(-.5,0) .. (pu) + .. controls +(.5,0) and +(-.6,.3) .. (p2) + .. controls +(-.6,-.3) and +(.5,0) .. (pd) + .. controls +(-.5,0) and +(.6,-.3) .. (p1); + \draw (p1) .. controls +(1,-2) and +(-1,-1) .. (pd); + \draw (p2) .. controls +(-1,2) and +(1,1) .. (pu); + \draw[->, thick, orange!50!brown] (1.45,-1.1)-- node[left, black] {$f$} +(0,.7); + \draw[->, thick, orange!50!brown] (4.35,.4)-- node[left, black] {$g$} +(0,.7); + \draw[->, thick, blue!75!yellow] (1.5,.78) node[black, above] {$(b\cdot c)\times I$} -- (2.5,0); +\end{tikzpicture}} \end{equation*} \caption{Horizontal composition of 2-morphisms} \label{fzo5}