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- Motoshi Hongan
- 1997

Let R be a 2-torsion free semiprime ring, I a nonzero ideal of R, Z the center
of R and D:R→R a derivation. If d[x,y]

- Motoshi Hongan
- 1983

- Motoshi Hongan
- 1982

- Motoshi Hongan
- 1986

Let S be a semigroup. An element a of S is called right (resp. left) regular if a=ax (resp. a = xa) for some xeS. If a is regular and right (resp. left) regular, a is called strongly right (resp.… (More)

- Motoshi Hongan
- 1996

SummaryLetR be a ring. A bi-additive symmetric mappingD:R × R → R is called a symmetric bi-derivation if, for any fixedy ∈ R, the mappingx ↦ D(x, y) is a derivation. J. Vukman [2, Theorem 2] proved… (More)

- Motoshi Hongan
- 1985