TY - JOUR AU - Byleen, Karl TI - Embedding any countable semigroup without idempotents in a 2-generated simple semigroup without idempotents JO - Glasgow mathematical journal PY - 1988 SP - 121 EP - 128 VL - 30 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500007126/ DO - 10.1017/S0017089500007126 ID - 10_1017_S0017089500007126 ER -