diff --git a/images/ball_4_pushed_seifert.pdf b/images/ball_4_pushed_seifert.pdf index f8a5e12..dd1e3e8 100644 Binary files a/images/ball_4_pushed_seifert.pdf and b/images/ball_4_pushed_seifert.pdf differ diff --git a/images/ball_4_pushed_seifert.pdf_tex b/images/ball_4_pushed_seifert.pdf_tex index 88308a8..a089784 100644 --- a/images/ball_4_pushed_seifert.pdf_tex +++ b/images/ball_4_pushed_seifert.pdf_tex @@ -36,7 +36,7 @@ }% \providecommand\rotatebox[2]{#2}% \ifx\svgwidth\undefined% - \setlength{\unitlength}{223.52694534bp}% + \setlength{\unitlength}{241.6789546bp}% \ifx\svgscale\undefined% \relax% \else% @@ -48,17 +48,16 @@ \global\let\svgwidth\undefined% \global\let\svgscale\undefined% \makeatother% - \begin{picture}(1,0.96340964)% + \begin{picture}(1,0.87333181)% \put(0,0){\includegraphics[width=\unitlength,page=1]{ball_4_pushed_seifert.pdf}}% - \put(0.1505123,0.68779344){\color[rgb]{0,0,0}\makebox(0,0)[lt]{\begin{minipage}{2.12585306\unitlength}\raggedright $B^4$ \end{minipage}}}% + \put(0.33217286,0.77104639){\color[rgb]{0,0,0}\makebox(0,0)[lt]{\begin{minipage}{1.96618474\unitlength}\raggedright $B^4$ \end{minipage}}}% + \put(1.27431841,1.84948009){\color[rgb]{0,0,0}\makebox(0,0)[lt]{\begin{minipage}{0.39774488\unitlength}\raggedright \end{minipage}}}% + \put(1.36004492,1.65392014){\color[rgb]{0,0,0}\makebox(0,0)[lt]{\begin{minipage}{0.39774488\unitlength}\raggedright \end{minipage}}}% \put(0,0){\includegraphics[width=\unitlength,page=2]{ball_4_pushed_seifert.pdf}}% - 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transform="matrix(1.2245251,0,0,2.2214098,-1092.0133,979.80704)">$B^4$  - $B^4$  $\Sigma$ $\Sigma$ - $\Sigma$ - - - - - + + + + + + + + + + $g(F) = g_4(K)$  $F \subset B^4$  $S^3$  + id="flowPara618">$S^3$  + $\Sigma$ diff --git a/images/seifert_matrix.pdf b/images/seifert_matrix.pdf index 3b417ab..c11d98a 100644 Binary files a/images/seifert_matrix.pdf and b/images/seifert_matrix.pdf differ diff --git a/images/seifert_matrix.pdf_tex b/images/seifert_matrix.pdf_tex index 4851a84..86c0bad 100644 --- a/images/seifert_matrix.pdf_tex +++ b/images/seifert_matrix.pdf_tex @@ -1,4 +1,4 @@ -%% Creator: Inkscape inkscape 0.91, www.inkscape.org +%% Creator: Inkscape inkscape 0.92.2, www.inkscape.org %% PDF/EPS/PS + LaTeX output extension by Johan Engelen, 2010 %% Accompanies image file 'seifert_matrix.pdf' (pdf, eps, ps) %% @@ -49,16 +49,16 @@ \global\let\svgscale\undefined% \makeatother% \begin{picture}(1,0.36122373)% - \put(0.76646668,0.87323963){\color[rgb]{0,0,0}\makebox(0,0)[lt]{\begin{minipage}{0.30136242\unitlength}\raggedright \end{minipage}}}% + \put(0.76646668,0.87323963){\color[rgb]{0,0,0}\makebox(0,0)[lt]{\begin{minipage}{0.30136242\unitlength}\raggedright  \end{minipage}}}% \put(0.58791127,0.62441177){\color[rgb]{0,0,0}\makebox(0,0)[lt]{\begin{minipage}{0.06104295\unitlength}\raggedright \end{minipage}}}% - 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& H^1(S^3\setminus N) \to + & H^1(S^3\setminus N) \to \\ & 0 \ar[u,isomorphic]& \\ @@ -155,13 +157,29 @@ Let us consider a long exact sequence of cohomology of a pair $(S^3, S^3 \setmin & \mathbb{Z} \ar[u,isomorphic] &\\ \end{tikzcd} \end{center} -\[ -H^* (S^3, S^3 \setminus N) \cong H^* (N, \partial N) -\] +\begin{align*} +N \cong & D^2 \times S^1\\ +\partial N \cong & S^1 \times S^1\\ +H^1(N, \partial N) \cong & \mathbb{Z} \oplus \mathbb{Z} +\end{align*} +\begin{align*} +H^* (S^3, S^3 \setminus N) &\cong H^* (N, \partial N)\\ \\ -?????????????? -\\ - +H^ 1 (S^3\setminus N) &\cong H^1(S^3\setminus K) \cong \mathbb{Z} +\end{align*} +\begin{equation*} +\begin{tikzcd}[row sep=huge] +H^1(S^3 \setminus K) \arrow[r,] \arrow[d,"\widetilde{\Theta}"] & +H^1(N \setminus K) \arrow[d,"\Theta"] \\ +{[S^3 \setminus K, S^1]} \arrow[r,]& +{[N \setminus K, S^1]} +\end{tikzcd} +\end{equation*} +\noindent +$\Sigma = \widetilde{\Theta}^{-1}(X)$ is a surface, such that $\partial \Sigma = K$, so it is a Seifert surface. +% +% +% Thom isomorphism, \end{proof} \begin{definition} @@ -312,13 +330,39 @@ ${D^2 \overset{g}\longhookrightarrow M}$ such that: g_{\big| \partial D^2} = f_{\big| \partial D^2.} \] \end{lemma} -\section{} +\noindent +Remark: Dehn lemma doesn't hold for dimension four.\\ +Let $M$ be connected, compact three manifold with boundary. +Suppose $\pi_1(\partial M) \longrightarrow \pi_1(M)$ has non-trivial kernel. Then there exists a map $f: (D^2, \partial D^2) \longrightarrow (M, \partial M)$ such that $f\big| \partial D^2$ is non-trivial loop in $\partial M$ +\begin{theorem}[Sphere theorem] +Suppose $\pi_1(M) \ne 0$. Then there exists an embedding $f: S^2 \hookrightarrow M$ that is homotopy non-trivial. +\end{theorem} +\begin{problem} +Prove that $S^3 \ K$ is Eilenberg–MacLane space of type $K(\pi, 1)$. +\end{problem} +\begin{corollary} +Suppose $K \subset S^3$ and $\pi_1(S^3 \setminus K)$ is infinite cyclic ($\mathbb{Z})$. Then $K$ is trivial. +\end{corollary} +\subsection*{Construction} +We know that $3$ - sphere can be obtained by gluing two solid tori: +$S^3 = (D^2 \times S^1) \cup (S^1 \times D^2)$. So the complement of solid torus in $S^3$ is another solid torus.\\ +Take $(z_1, z_2) \in \mathbb{C}$ such that $max(\mid z_1 \mid, \mid z_2, \mid) = 1 +$ +\begin{figure}[h] +\centering{ +\def\svgwidth{\linewidth} +\resizebox{0.3\textwidth}{!}{\includegraphics[width=0.3\textwidth]{sphere_as_torus.png}} +\caption{The complement of solid torus in $S^3$ is another solid torus.} +\label{fig:sphere_as_tori} +} +\end{figure} + + \begin{example} \begin{align*} &F: \mathbb{C}^2 \rightarrow \mathbb{C} \text{ a polynomial} \\ &F(0) = 0 \end{align*} - \end{example} ???????????? \\ @@ -348,6 +392,7 @@ Figure 8 knot is negative amphichiral. % % % + \section{Concordance group \hfill\DTMdate{2019-03-18}} \begin{definition} Two knots $K$ and $K^{\prime}$ are called (smoothly) concordant if there exists an annulus $A$ that is smoothly embedded in ${S^3 \times [0, 1]}$ such that @@ -1064,6 +1109,10 @@ H_{p, i} = \quot{\mathbb{Z}[t, t^{-1}]}{p^{k_i} \mathbb{Z} [t, t^{-1}]} \noindent The proof is the same as over $\mathbb{Z}$. \noindent +%Add NotePrintSaveCiteYour opinionEmailShare +%Saveliev, Nikolai +%Lectures on the Topology of 3-Manifolds +%An Introduction to the Casson Invariant \end{document}