TY - JOUR AU - Ismail Idris TI - Orderings and preorderings in rings with involution JO - Colloquium Mathematicum PY - 2000 SP - 15 EP - 20 VL - 83 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-83-1-15-20/ DO - 10.4064/cm-83-1-15-20 LA - en ID - 10_4064_cm_83_1_15_20 ER -