𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On the norm of a finite boolean algebra of projections, and applications to theorems of Kreiss and Morton

✍ Scribed by C. A. McCarthy; J. Schwartz


Publisher
John Wiley and Sons
Year
1965
Tongue
English
Weight
393 KB
Volume
18
Category
Article
ISSN
0010-3640

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


On an Obstruction to the Hasse Norm Prin
✍ Leonid Stern πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 214 KB

Let LΓ‚k and TΓ‚k be finite extensions of algebraic number fields. In the present work we introduce the factor group of k\* & N LΓ‚k J L N TΓ‚k J T by (k\* & N TΓ‚k J T ) N LΓ‚k L\*, where J L and J T are the idele groups of L and T, respectively. The main theorem shows that the computation of this factor

On a Theorem of Halphen and its Applicat
✍ F Gesztesy; K Unterkofler; R Weikard πŸ“‚ Article πŸ“… 2000 πŸ› Elsevier Science 🌐 English βš– 166 KB

We extend Halphen's theorem which characterizes solutions of certain nth-order differential equations with rational coefficients and meromorphic fundamental systems to a first-order n Γ— n system of differential equations. As an application of this circle of ideas we consider stationary rational alge

On a Theorem of J. E. Olson and an Appli
✍ G. Troi; U. Zannier πŸ“‚ Article πŸ“… 1997 πŸ› Elsevier Science 🌐 English βš– 180 KB

Generalizing a theorem by J. E. Olson determining the Davenport's constant of a finite abelian p-group A, we prove that if S 1 , . . . , S k are given sets of integers satisfying suitable conditions and if g 1 , . . . , g k Κ¦ A, then a nontrivial vanishing sum of the form s 1 g 1 Ο© ΠΈ ΠΈ ΠΈ Ο© s k g k ,

Set Covering and Serre's Theorem on the
✍ ErgΓΌn YalΓ§in πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 150 KB

We define a group theoretical invariant, denoted by s G , as a solution of a certain set covering problem and show that it is closely related to chl(G), the cohomology length of a p-group G. By studying s G we improve the known upper bounds for the cohomology length of a p-group and determine chl(G)