Todd Samuelson is Rare Books and Manuscripts Curator in Cushing Memorial Library & Archives, Laura Sare is Government Information Librarian in Sterling C. Evans Library, and Catherine Coker is Coordinator of Research Services in Cushing Memorial Library & Archives, all at Texas A&M University; e-mail: [email protected], [email protected], [email protected]. © 2012 Todd Samuel...

Greenhouse and field microplot studies were conducted to compare soybean shoot and root growth responses to root penetration by Heterodera glycines (Hg) and Meloidogyne incognita (Mi) individually and in combination. Soybean cultivars Centennial (resistant to Hg and Mi), Braxton (resistant to Mi, susceptible to Hg), and Coker 237 (susceptible to Hg and Mi) were selected for study. In the greenh...

This note studies Arveson’s curvature invariant for d-contractions T = (T1, T2, . . . , Td) for the special case d = 1, referring to a single contraction operator T on a Hilbert space. It establishes a formula which gives an easy-to-understand meaning for the curvature of a single contraction. The formula is applied to give an example of an operator with nonintegral curvature. Under the additio...