v*e
3 楼
Let X = (V, E) be a graph. A parttition \pi of V(X) with cells C_1, ..., C_r
is equitable if the number of neighbours in C_j of a vertex u in C_i is a
constant b_ij, independent of u. An equivalent definition is that the
subgraph of X induced by each cell is regular, and the edges joining any two
distinct cells form a semiregular bipartite graph. The directed graph with
the r cells of \pi as its vertices and b_ij arcs from the i-th to the j-th
cells of \pi is called the quotient of X over \pi.
【在 s***i 的大作中提到】
: 能不能解释一下,google不到。。。。
is equitable if the number of neighbours in C_j of a vertex u in C_i is a
constant b_ij, independent of u. An equivalent definition is that the
subgraph of X induced by each cell is regular, and the edges joining any two
distinct cells form a semiregular bipartite graph. The directed graph with
the r cells of \pi as its vertices and b_ij arcs from the i-th to the j-th
cells of \pi is called the quotient of X over \pi.
【在 s***i 的大作中提到】
: 能不能解释一下,google不到。。。。
e*s
4 楼
你应该贴到apple版去
【在 m******s 的大作中提到】
: mac 就像0bama.外表华丽,其实一肚子草。
: http://www.youtube.com/watch?v=Rjpn3L3bSJQ&NR=1
: http://www.youtube.com/watch?v=oc4oP_ITqMc&feature=related
: http://www.youtube.com/watch?v=gFAJDbV9Vfs&feature=related
【在 m******s 的大作中提到】
: mac 就像0bama.外表华丽,其实一肚子草。
: http://www.youtube.com/watch?v=Rjpn3L3bSJQ&NR=1
: http://www.youtube.com/watch?v=oc4oP_ITqMc&feature=related
: http://www.youtube.com/watch?v=gFAJDbV9Vfs&feature=related
W*F
8 楼
ding
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