𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On Zero-Preserving Linear Transformations

✍ Scribed by J.M. Carnicer; J.M. Peña; A. Pinkus

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
132 KB
Volume
266
Category
Article
ISSN
0022-247X

No coin nor oath required. For personal study only.

✦ Synopsis

For an arbitrary subset I of and for a function f defined on I, the number of zeros of f on I will be denoted by

In this paper we attempt to characterize all linear transformations T taking a linear subspace W of C I into functions defined on J (I J ⊆ ) such that Z I f = Z J Tf for all f ∈ W .

📜 SIMILAR VOLUMES

Linear Functionals Invariant Under Measu
Linear Functionals Invariant Under Measure Preserving Transformations
✍ Stanisłlaw Kwapień 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 English ⚖ 270 KB

does there exist a lion standard linear functional on Zp which is invariant under permutations e.g. which has the same value on each two elements in lp one of which is obtained from the other by a permutation of the coordinates. An answer to this and related problems will appear in a paper by T. FIG

Shape Preserving Properties of Some Posi
Shape Preserving Properties of Some Positive Linear Operators on Unbounded Intervals
✍ Ingrid Carbone 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 265 KB

In this paper we study some shape preserving properties of particular positive linear operators acting on spaces of continuous functions defined on the interval [0, + [, which are strongly related to the semigroups generated by a large class of degenerate elliptic second order differential operators

Orthogonality Preserving Transformations
Orthogonality Preserving Transformations on Indefinite Inner Product Spaces: Generalization of Uhlhorn's Version of Wigner's Theorem
✍ Lajos Molnár 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 146 KB

We present an analogue of Uhlhorn's version of Wigner's theorem on symmetry transformations for the case of indefinite inner product spaces. This significantly generalizes a result of Van den Broek. The proof is based on our main theorem, which describes the form of all bijective transformations on

A note on fitting one-compartment models
A note on fitting one-compartment models: Non-linear least squares versus linear least squares using transformed data
✍ A. John Bailer; Christopher J. Portier 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 341 KB

Drug concentrations in one-compartment systems are frequently modeled using a single exponential function. Two methods of estimation are commonly used for determining the parameters of such a model. In the first method, non-linear least-squares regression is used to calculate the parameters. In the