12,445,966 research outputs found
Influence of Anthropogenic Climate Change on the Ecophysiology of the Cold Water Coral Lophelia pertusa = Einfluss des anthropogenen Klimawandels auf die Ökophysiologie der Kaltwasserkoralle Lophelia pertusa
Monographic work describing the cultivation of cold-water coral Lophelia pertusa in closed recirculating systems and climate change related short- and long-term experiments
Formulario de originalidad
The article submitted for review is original, has not been previously published and has not been simultaneously submitted for review in another journal.El artículo enviado a revisión es original, no ha sido publicado previamente y no se ha enviado simultáneamente para su evaluación en otra revist
Formulario de originalidad
The article submitted for review is original, has not been previously published and has not been simultaneously submitted for review in another journal.El artículo enviado a revisión es original, no ha sido publicado previamente y no se ha enviado simultáneamente para su evaluación en otra revist
Conservativeness of non-symmetric diffusion processes generated by perturbed divergence forms
Let E be an unbounded open (or closed) domain in Euclidean space of dimension
greater or equal to two. We present conservativeness criteria for (possibly
reflected) diffusions with state space E that are associated to fairly general
perturbed divergence form operators. Our main tool is a recently extended
forward and backward martingale decomposition, which reduces to the well-known
Lyons-Zheng decomposition in the symmetric case.Comment: Corrected typos, minor modification
Factor maps between tiling dynamical systems
We show that there is no Curtis-Hedlund-Lyndon Theorem for factor maps
between tiling dynamical systems: there are codes between such systems which
cannot be achieved by working within a finite window. By considering
1-dimensional tiling systems, which are the same as flows under functions on
subshifts with finite alphabets of symbols, we construct a `simple' code which
is not `local', a local code which is not simple, and a continuous code which
is neither local nor simple.Comment: 8 page
Stratified fibre bundles
A stratified bundle is a fibered space in which strata are classical bundles
and in which attachment of strata is controlled by a structure category of
fibers. Well known results on fibre bundles are shown to be true for stratified
bundles; namely the pull back theorem, the bundle theorem and the principal
bundle theorem.Comment: LaTeX file. Revised version. Accepted for publication on "Forum
Mathematicum
Approximating L^2-signatures by their compact analogues
:Let G be a group together with an descending nested sequence of normal
subgroups G=G_0, G_1, G_2 G_3, ... of finite index [G:G_k] such the
intersection of the G_k-s is the trivial group. Let (X,Y) be a compact
4n-dimensional Poincare' pair and p: (\bar{X},\bar{Y}) \to (X,Y) be a
G-covering, i.e. normal covering with G as deck transformation group. We get
associated -coverings (X_k,Y_k) \to (X,Y). We prove that
sign^{(2)}(\bar{X},\bar{Y}) = lim_{k\to\infty} \frac{sign(X_k,Y_k)}{[G : G_k]},
where sign or sign^{(2)} is the signature or L^2-signature, respectively, and
the convergence of the right side for any such sequence (G_k)_k is part of the
statement
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