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- T. A. Peng
- 1969

The purpose of this paper is to study a class of finite groups whose subgroups of prime power order are all pro-normal. Following P. Hall, we say that a subgroup H of a group G is pro-normal in G if… (More)

- Christopher H Chen, T. A. Peng
- Australasian J. Combinatorics
- 1995

We provide an elementary method to show that there exist infinitely many right-angled triangles with integral sides in which the lengths of the two non-hypotenuse sides differ by 1. The method also… (More)

- T. A. Peng
- 1978

- T. A. Peng
- 1976

Let H be a subgroup of a finite group G and let S be a set of generators of H . We prove that if G is soluble, then H is subnormal in G if and only if there exists an integer n such that for each g… (More)

- 永田 雅宜, T. A. Peng
- 1988

- T. A. Peng
- 1987

- T. A. Peng
- 1973

- T. A. Peng
- 1977

Let G be a finite group. Let 1 - I, is defined by Z,+,(G)/Z,(G) = Z(G/Z,(G)). Let H(G) == ui ZJG). The subgroup H(G) is called the hypercenter of G. Clearly H(G) is nilpotent and characteristic in G.… (More)

- T. A. Peng
- 1966

- T. A. Peng
- 1982