Results 71 to 80 of about 845,918 (219)
Local zero estimates and effective division in rings of algebraic power series [PDF]
, 2015 We give a necessary condition for algebraicity of finite modules over the ring of formal power series. This condition is given in terms of local zero estimates.
Rond, Guillaume
core
eLife, 2018 The prokaryotic tubulin homolog FtsZ polymerizes into protofilaments, which further assemble into higher-order structures at future division sites to form the Z-ring, a dynamic structure essential for bacterial cell division.
Fenghui Guan +8 more
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Strange divisibility in groups and rings [PDF]
Archiv der Mathematik, 2017 We prove a general divisibility theorem that implies, e.g., that, in any group, the number of generating pairs (as well as triples, etc.) is a multiple of the order of the commutator subgroup. Another corollary says that, in any associative ring, the number of Pythagorean triples (as well as four-tuples, etc.) of invertible elements is a multiple of ...
Anna A. Mkrtchyan, Anton A. Klyachko
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Cell migration and division in amoeboid-like fission yeast
Biology Open, 2013 Summary Yeast cells are non-motile and are encased in a cell wall that supports high internal turgor pressure. The cell wall is also essential for cellular morphogenesis and cell division.
Ignacio Flor-Parra +3 more
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Rendiconti del Seminario Matematico della Università di PadovaGiven an associative ring with identity R and a ring homomorphism f\colon R\rightarrow D to a division ring D , the singular kernel of f
Daniel E. N. Kawai, Javier Sánchez
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Pseudobases in Direct Powers of an Algebra [PDF]
, 1993 A subset P of an abstract algebra A is a pseudobasis if every function from P into A extends uniquely to an endomorphism on A. A is called K-free has a pseudobasis of cardinality K; A is minimally free if A has a pseudobasis.
Bankston, Paul
core +1 more source
Z-ring Structure and Constriction Dynamics in E. coli
Frontiers in Microbiology, 2017 The Z-ring plays a central role in bacterial division. It consists of FtsZ filaments, but the way these reorganize in the ring-like structure during septation remains largely unknown.
Pramod Kumar +6 more
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Cytological profile of antibacterial FtsZ inhibitors and synthetic peptide MciZ
Frontiers in Microbiology, 2016 Cell division protein FtsZ is the organizer of the cytokinetic ring in almost all bacteria and a target for the discovery of new antibacterial agents that are needed to counter widespread antibiotic resistance.
Lidia Araujo-Bazan +4 more
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Planar division neo-rings [PDF]
Transactions of the American Mathematical Society, 1955 Introduction. The notion of a division ring can be generalized to give a system whose addition is not necessarily associative, but which retains the property of coordinatizing an affine plane. Such a system will be called a planar division neo-ring (PDNR); examples of (infinite) PDNRs which are not division rings are known.
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PLoS Genetics, 2014 Assembly of the essential, tubulin-like FtsZ protein into a ring-shaped structure at the nascent division site determines the timing and position of cytokinesis in most bacteria and serves as a scaffold for recruitment of the cell division machinery ...
Daniel P Haeusser +8 more
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