The Regular J-Class of the Power Semigro
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Takayuki Tamura
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Article
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1990
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John Wiley and Sons
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English
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Next we consider when those idempotents are Ror &related. If idempotents ( A , B; 4) and (C, D; $) are R-(L)related, then it is necessary that A = C ( B = D). lluinma 2.4. [lo]. Idempdents ( A , B ; 4) and ( A , D ; $J) of depth 1 are R-related i f and e r r l y i f A x (b, d ) is poportional in P