Buscar
Mostrando ítems 1011-1020 de 1092
Homothetic perfect fluid spacetimes
(SABER ULA, 2008)
Eliminating components in Quillen's conjecture
(Academic Press Inc Elsevier Science, 2022-06-16)
We generalize an earlier result of Segev, which shows that some component in a minimal counterexample to Quillen's conjecture must admit an outer automorphism. We show in fact that every component must admit an outer ...
On sum of squares certificates of non-negativity on a strip
(Elsevier Science, 2021-07)
In Polynomials non-negative on a strip, Murray Marshall proved that every non-negative on the strip can be written as with sums of squares in . In this work, we present a few results concerning this representation in ...