Project Euclid's mission is to advance effective and affordable scholarly communication in the field of theoretical and applied mathematics and statistics. Through a collaborative partnership arrangement, publishers join forces and participate in an online presence with advanced functionality while maintaining their quality, intellectual and economic independence, and commitment to affordable subscription prices. Since some electronic access is granted directly by the publisher (not Project Euclid), Penn State has access to most titles but not all. Check The CAT or 'E-journals at Penn State' to confirm access to specific titles.