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第1期Some characterizations for weaklyleft-C-Ehresmann semigroups……………………………………LI Gang,LIANG Chao(2005-1-1)某种幂等半环的结构……………………………………………………………………………………………张璇(2005-1-8)有限群的C-正规子群与可解性………
Some characterizations for weaklyleft-C-Ehresmann semigroups LI Gang, LIANG Chao (2005-1-1) Some structure of idempotent half-rings ............ .................................................................................... Zhang Xuan (2005-1-8) C-normal subgroups of finite groups and can Solvable .........