Results 141 to 150 of about 544 (187)

Higher Structure of Chiral Symmetry. [PDF]

open access: yesCommun Math Phys
Copetti C   +3 more
europepmc   +1 more source

Subperiodic groups, line groups and their applications. [PDF]

open access: yesJ Appl Crystallogr
de la Flor G, Milošević I.
europepmc   +1 more source

Transition from neonatal to paediatric intensive care of very preterm-born children: a cohort study of children born between 2013 and 2018 in England and Wales. [PDF]

open access: yesArch Dis Child Fetal Neonatal Ed
van Hasselt TJ   +8 more
europepmc   +1 more source

Neonatal Morbidities and Hospitalization in the First 2 Years of Life Among Infants Born Very Preterm. [PDF]

open access: yesJAMA Netw Open
van Hasselt TJ   +7 more
europepmc   +1 more source

Isometries of Spacetimes Without Observer Horizons. [PDF]

open access: yesCommun Math Phys
García-Heveling L, Zeghib A.
europepmc   +1 more source

Solitary subgroups of Abelian groups

Expositiones Mathematicae, 2021
A subgroup \(K\) of an abelian group \(G\) is called solitary if \(G\) contains no other subgroup isomorphic to \(K\). The paper is dedicated to the study of solitary subgroups for some important classes of abelian groups. Complete descriptions are presented in Theorem 3 and Theorem 4.
Călugăreanu, Grigore   +1 more
openaire   +3 more sources

On Groups Saturated with Abelian Subgroups

International Journal of Algebra and Computation, 1998
Groups with the weak maximal condition on non-abelian subgroups are the main subject of this research. Locally finite groups with this property are abelian or Chemikov. Non-abelian groups with the weak maximal condition on non-abelian subgroups, which have an ascending series of normal subgroups with locally nilpotent or locally finite factors, are ...
Lev S. Kazarin   +2 more
openaire   +2 more sources

Coverings of Groups by Abelian Subgroups

Canadian Journal of Mathematics, 1978
Paul Erdôs has suggested an investigation of infinite groups from the point of view of the partition relations of set theory. In particular, he suggested that given a group G, one considers the graph T with vertex set G whose edges are the pairs ﹛g, h﹜ which do not commute.
Faber, V., Laver, R., McKenzie, R.
openaire   +2 more sources

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