Zobrazeno 1 - 10
of 140
pro vyhledávání: '"R. F. WILLIAMS"'
Autor:
R. F. Williams
Publikováno v:
Science China Mathematics. 63:1929-1934
An earlier conjecture is settled with an immersion of a 2-dimensional branched manifold. Possible obstructions in linear algebra and tiling theory are studied first.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef7fe15f1e6b9e85640b3f39880cb699
https://doi.org/10.1007/s11425-019-9565-y
https://doi.org/10.1007/s11425-019-9565-y
Autor:
R. F. Williams, Marcy Barge
Publikováno v:
Topology and its Applications. 106(1):77-89
We prove Fokkink's theorem, that two Denjoy continua are homeomorphic if and only if the associated irrationals are equivalent, by means of a geometric bifurcation theory approach to continued fractions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd0bccbc6bd8c7f6915b0de96701f26e
Autor:
R. F. Williams
Publikováno v:
Bulletin of the American Mathematical Society. 35:145-156
This is a report on recent work of Robert Ghrist in which he shows that universal templates exist. Put another way, there are many structurally stable flows in the 3-sphere, each of which has periodic orbits representing every knot type. This answers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0d74b61c83ff8ac4e4e169ba2b96e7d
https://doi.org/10.1090/s0273-0979-98-00744-7
https://doi.org/10.1090/s0273-0979-98-00744-7
We introduce a procedure for establishing pure discrete spectrum for substitution tiling systems of Pisot family type and illustrate with several examples.
23 pages, 5 figures
23 pages, 5 figures
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d114d985948783f98f4a8f5133749fb
http://arxiv.org/abs/1107.3598
http://arxiv.org/abs/1107.3598
Autor:
C. Tresser, R. F. Williams
Publikováno v:
Physica D: Nonlinear Phenomena. 62:15-21
A canonical way to split Lorenz periodic orbits is presented. This allows one to recognize the braids on the Lorenz template which can occur in non-chaotic semi-flows on this surface. We first present a combinatorial version of our main result, and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35c4f4753db95b217b16c755aec5d0dc
https://doi.org/10.1016/0167-2789(93)90269-7
https://doi.org/10.1016/0167-2789(93)90269-7
Autor:
R F, Williams, T L, Sims, L, Tracey, A L, Myers, C Y C, Ng, H, Poppleton, A C, Nathwani, A M, Davidoff
Publikováno v:
Anticancer research. 30(9)
The vascular niche necessary for cancer stem cell maintenance is a potential target for cancer therapy.Human glioma xenografts were treated with IFN-β delivered systemically via a liver-targeted, adeno-associated viral vector. The vascular niche was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::6b11275862709990df1d4637c7bfebfa
https://pubmed.ncbi.nlm.nih.gov/20944101
https://pubmed.ncbi.nlm.nih.gov/20944101
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 263:H559-H564
Although improved surgery, angioplasty, and thrombolysis have made early revascularization of ischemic myocardium commonplace, the effects of arterial hypertension on myocardial recovery remain unclear. Therefore eight conscious dogs were instrumente
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80e71fdfb0e55e974b362d575c1b5904
https://doi.org/10.1152/ajpheart.1992.263.2.h559
https://doi.org/10.1152/ajpheart.1992.263.2.h559
Publikováno v:
Archives of Disease in Childhood. 67:192-195
In a retrospective study, children with cystic fibrosis who were colonised with Pseudomonas cepacia were compared with a control group who were colonised with Pseudomonas maltophilia. Out of 216 children with cystic fibrosis seen between 1983 and 199
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38ff1d962e7a18f72ab64eb17455851e
https://doi.org/10.1136/adc.67.2.192
https://doi.org/10.1136/adc.67.2.192