108 \begin{eqnarray*} |
108 \begin{eqnarray*} |
109 (\ldots, M_{i-1}, M_i, M_{i+1}, \ldots) &\to& (\ldots, M_{i-1}, M'_i, M''_i, M_{i+1}, \ldots) \\ |
109 (\ldots, M_{i-1}, M_i, M_{i+1}, \ldots) &\to& (\ldots, M_{i-1}, M'_i, M''_i, M_{i+1}, \ldots) \\ |
110 (\ldots, N_{i-1}, N_i, N_{i+1}, \ldots) &\to& (\ldots, N_{i-1}, N'_i, N''_i, N_{i+1}, \ldots) \\ |
110 (\ldots, N_{i-1}, N_i, N_{i+1}, \ldots) &\to& (\ldots, N_{i-1}, N'_i, N''_i, N_{i+1}, \ldots) \\ |
111 (\ldots, R_{i-1}, R_i, R_{i+1}, \ldots) &\to& |
111 (\ldots, R_{i-1}, R_i, R_{i+1}, \ldots) &\to& |
112 (\ldots, R_{i-1}, R_i\cup M''_i, R_i\cup N'_i, R_{i+1}, \ldots) \\ |
112 (\ldots, R_{i-1}, R_i\cup M''_i, R_i\cup N'_i, R_{i+1}, \ldots) \\ |
113 (\ldots, f_{i-1}, f_i, \ldots) &\to& (\ldots, f_{i-1}, \rm{id}, f_i, \ldots) . |
113 (\ldots, f_{i-1}, f_i, \ldots) &\to& (\ldots, f_{i-1}, {\rm{id}}, f_i, \ldots) . |
114 \end{eqnarray*} |
114 \end{eqnarray*} |
115 (See Figure \ref{xdfig1}.) |
115 (See Figure \ref{xdfig1}.) |
116 \begin{figure}[t] |
116 \begin{figure}[t] |
117 $$\mathfig{.3}{deligne/dfig1a} \leftarrow \mathfig{.3}{deligne/dfig1b} \rightarrow \mathfig{.3}{deligne/dfig1c}$$ |
117 $$\mathfig{.3}{deligne/dfig1a} \leftarrow \mathfig{.3}{deligne/dfig1b} \rightarrow \mathfig{.3}{deligne/dfig1c}$$ |
118 \caption{Changing the order of a surgery.}\label{xdfig1} |
118 \caption{Changing the order of a surgery.}\label{xdfig1} |