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TK -operator Semigroups for Cryptogroups
Semigroup Forum, 2000A by now standard way of studying the lattice of congruences on a regular semigroup is via the trace and kernel operators: with any congruence \(\rho\) are associated \(\rho k\), \(\rho K\), \(\rho t\), \(\rho T\), respectively the least and greatest congruences with the same kernel (union of idempotent classes) as \(\rho\), and the least and greatest ...
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Journal of Orthopaedic & Sports Physical Therapy, 1986
James A. Gould, George J. Davies
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James A. Gould, George J. Davies
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