1 IntroductionThe concept of (m,n)-

1 Introduction
The concept of (m,n)-ideal of a semigroup was introduced by Lajos [2]. The left almost semigroup (LA-semigroup), was first introduced by Kazim and Naseerudin [1]. Later, Mushtaq [3, 4] and others investigated this idea further and added many useful results to the theory of LA-semigroups. Mushtaq and Yusuf produced useful results [4], on locally associative LA-semigroups in 1979. In locally associative LA-semigroups they defined powers of an element and congruences using these powers. In this paper, we discussed some properties of (m,n)-ideals in a locally associative LA-semigroup.

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1 Introduction.The concept, of (m n) - ideal of a semigroup was introduced by Lajos [2]. The left almost semigroup (LA-semigroup), was fi rst. Introduced by Kazim and Naseerudin []. Later 1, [], Mushtaq 3 4 and others investigated this idea further and added many useful. Results to the theory of LA-semigroups. Mushtaq and Yusuf produced useful results [4], on locally associative LA-semigroups. In 1979. In locally associative LA-semigroups they de fi ned powers of an element and congruences using these powers. In this. Paper we discussed, some properties, of (m n) - ideals in a locally associative LA-semigroup.