TY - JOUR AU - Steven Vickers TI - The double powerlocale and exponentiation: A case study in geometric logic JO - Theory and applications of categories PY - 2004 SP - 372 EP - 422 VL - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAC_2004_12_a12/ LA - en ID - TAC_2004_12_a12 ER -