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单词
second species
释义
second species
second species
[
¦sek·ənd ′spē‚shēz
]
(mathematics)
The class of sets
G
0
such that all the sets
G
n
are nonempty, where, in general,
G
n
is the derived set of
G
n
-1
.
随便看
nnfd
nnfe
nnff
nnffl
nnfhc
nnfi
nnfl
nnflp
nnfm
nnfmp
nnfn
nnfp
nnfpc
nnfr
nnfs
nnfu
nn/g
nng
nnga
nngb
nngc
nngcc
nngngb
nngo
nngoc
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更新时间:2026/1/13 15:10:12