46 citations
- Schlumberger (United States)US5 papers
- University of JohannesburgZA4 papers
- Clayton State UniversityUS2 papers
- Rice UniversityUS2 papers
- Shenzhen Institutes of Advanced TechnologyCN2 papers
- University of HaifaIL2 papers
- Case Western Reserve UniversityUS1 paper
- Dalton State CollegeUS1 paper
- Emory UniversityUS1 paper
- Houston Fertility InstituteUS1 paper
- Keene State CollegeUS1 paper
- National Institute of Science Education and ResearchIN1 paper
Showing 2013Show all
2 papers · 1 filter
math.FA2013★ 1 cited
A short proof of the Arendt-Chernoff-Kato theorem
Sergiy Koshkin
We give a short new proof of the Arendt-Chernoff-Kato theorem, which characterizes generators of positive C0 semigroups in order unit spaces. The proof avoids half-norms and subdif…
math.NA2013★ 7 cited
The Ritz method with Lagrange multipliers
Vojin Jovanovic, Sergiy Koshkin
We develop a general form of the Ritz method for trial functions that do not satisfy the essential boundary conditions. The idea is to treat the latter as variational constraints a…