User profiles for E. J. Postma
Erik Jelle PostmaManager of the mathematical software group, Maplesoft Verified email at maplesoft.com Cited by 66 |
Multivariate power series in Maple
…, M Kazemi, M Moreno Maza, EJ Postma - Maple in Mathematics …, 2021 - Springer
We present MultivariatePowerSeries, a Maple library introduced in Maple 2021, providing a
variety of methods to study formal multivariate power series and univariate polynomials over …
variety of methods to study formal multivariate power series and univariate polynomials over …
The metabolism of 14C-methoxsalen by the dog.
SJ Kolis, TH Williams, EJ Postma, GJ Sasso… - Drug Metabolism and …, 1979 - ASPET
Single doses of 14C-methoxsalen (5 mg/kg) were administered iv to three dogs. Almost as
much administered radioactivity was excreted in the feces as in the urine, suggesting that …
much administered radioactivity was excreted in the feces as in the urine, suggesting that …
Blends in Maple
RM Corless, EJ Postma - Maple in Mathematics Education and Research …, 2021 - Springer
A blend of two Taylor series for the same smooth real- or complex-valued function of a single
variable can be useful for approximation of said function. We use an explicit formula for a …
variable can be useful for approximation of said function. We use an explicit formula for a …
Identification of trimoprostil metabolites excreted in rat bile formed by oxidation and taurine conjugation.
SJ Kolis, EJ Postma, TH Williams, GJ Sasso - Drug metabolism and …, 1986 - ASPET
14C-Trimoprostil was administered iv and orally to male rats. Radioactivity was excreted
mainly via the feces after both routes of drug administration. Bile duct-cannulated rats excreted …
mainly via the feces after both routes of drug administration. Bile duct-cannulated rats excreted …
[PDF][PDF] From Lie algebras to geometry and back
EJ Postma - 2007 - research.tue.nl
6 1. INTRODUCTION motivation was the study of differential equations. One of his important
contributions was, that these groups could be better understood by considering the …
contributions was, that these groups could be better understood by considering the …
[PDF][PDF] The impact of big data on knowledge management systems in Romanian e-commerce retailers
…, C Nasulea, DF Nasulea, EJ Postma - Proceedings of the …, 2018 - academia.edu
Knowledge is one of the key strategic growth & development pillars facilitating the path
towards a smart and sustainable competitive advantage. Theories within the field of knowledge …
towards a smart and sustainable competitive advantage. Theories within the field of knowledge …
Electroweak stability and non-minimal coupling
M Postma, J van de Vis - Journal of Cosmology and Astroparticle …, 2017 - iopscience.iop.org
The measured values of the Higgs and top quark mass indicate that the electroweak vacuum
is metastable if there is no new physics below the Planck scale. This is at odds with a …
is metastable if there is no new physics below the Planck scale. This is at odds with a …
Covers of point-hyperplane graphs
A cover of the non-incident point-hyperplane graph of projective dimension 3 for fields of
characteristic 2 is constructed. For fields\mathbb F of even order larger than 2, this leads to …
characteristic 2 is constructed. For fields\mathbb F of even order larger than 2, this leads to …
[PDF][PDF] Covers of graphs related to the general linear group
EJ Postma - 2003 - researchgate.net
Gramlich [2] talks about point-hyperplane graphs, and notes some properties for the case
where the projective dimension is 2. In this report we try to investigate this case somewhat …
where the projective dimension is 2. In this report we try to investigate this case somewhat …
The new group theory package in Maple 17
EJ Postma - ACM Communications in Computer Algebra, 2014 - dl.acm.org
The GroupTheory package was added to Maple 17 [1]. It deals with discrete groups. The
package offers visualizations of group theoretic concepts; accepts input and generates output …
package offers visualizations of group theoretic concepts; accepts input and generates output …