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5582 research data, page 1 of 559

Cellular BV-BFV-BF theory

Mnev, Pavel (2017)
Publisher: Banff International Research Station for Mathematical Innovation and Discovery
We will present an example of a topological field theory living on cobordisms endowed with CW decomposition (this example corresponds to the so-called BF theory in its abelian and non-abelian variants), which satisfies the Batalin-Vilkovisky master equation, satisfies (a version of) Segal's gluing axiom w.r.t. concatenation of cobordisms and is compatible with cellularaggregations. In non-abelian case, the action functional of the theory is constructed out of local unimodular L-infinity algeb...

Sample Video Of Drosophila Interaction. Linked To "Beckwith, Geissmann And Gilestro"

Gilestro, Giorgio F.; Beckwith, Esteban J.; Geissmann, Quentin (2016)
Publisher: Zenodo
2016-08-02_08-56-55_057c6ba04e534be486069c3db7b10827__1920x1080@25-interaction 2016-08-02_08-56-55_058c6ba04e534be486069c3db7b10827__1920x1080@25-interaction 2016-08-02_08-56-56_059c6ba04e534be486069c3db7b10827__1920x1080@25-interaction 2016-08-02_08-56-57_060d6ba04e534be486069c3db7b10827__1920x1080@25-interaction   1 -> MF interaction (both D. melanogaster) 2-> MM interaction (both D. melanogaster) 3-> M ppk23-/- + F wildtype 4-> M D.melan...

Camera trap video of jackals and hyenas eating plains zebra that died of anthrax while foal watches

Steven Bellan; Wayne Getz (2017)
Publisher: Figshare
Motion-sensor camera traps (Reconyx) were used to capture the consumption and decomposition of zebra carcasses during anthrax outbreaks in 2009-2011 in Etosha National Park, Namibia. (Bellan et al. 2013, Methods Ecol Evol, see link below). This video shows a plains zebra (Equus quagga) that died of anthrax (causal bacterial agent Bacillus anthracis) being consumed by black-backed jackals (Canis mesomelas) and spotted hyena (Crocuta crocuta). Jackals live in territorial family groups but aggre...

La recherche à l'Ecole Polytechnique

Ecole Polytechnique Palaiseau (2008)
Publisher: CERN
Présentation de l'Ecole Polytechnique Palaiseau. Etudes et recherche.

Optimal redundancy in computations from random oracles

Barmpalias, George (2017)
Publisher: Banff International Research Station for Mathematical Innovation and Discovery
A classic result in algorithmic information theory is that every infinite binary sequence is computable from a Martin-Loef random infinite binary sequence. Proved independently by Kucera and Gacs, this result answered a question by Charles Bennett and has seen numerous applications in the last 30 years. The optimal redundancy in such a coding process has, however, remained unknown. If the computation of the first n bits of a sequence requires n + g(n) bits of the random oracle, then g is the ...

The undecidability of the domino problem

Jeandel, Emmanuel (2017)
Publisher: CIRM
Embargo end date: 2017/11/28
One of the most fundamental problem in tiling theory is to decide, given a surface, a set of tiles and a tiling rule, whether there exist a way to tile the surface using the set of tiles and following the rules. As proven by Berger in the 60’s, this problem is undecidable in general. When formulated in terms of tilings of the discrete plane by unit tiles with colored constraints, this is called the Domino Problem and was introduced by Wang in an effort to solve satisfaction problems ...

The Witt vector affine Grassmannian

Scholze, Peter (2015)
Publisher: CIRM
Embargo end date: 2015/07/09

Heat kernels of non-symmetric jump processes: beyond the stable case

Song, Renming (2017)
Publisher: Banff International Research Station for Mathematical Innovation and Discovery
Let $J$ be the Lévy density of a symmetric Lévy process in $\bf{R}^d$ with its Lévy exponent satisfying a weak lower scaling condition at infinity. Consider the non-symmetric and non-local operator \[ {\cal L}^{\kappa}f(x):= \lim_{\epsilon \downarrow 0} \int_{\{z \in \bf{R}^d: |z|>\epsilon\}}(f(x+z)-f(z))\kappa(x,z)J(z)\, dz\, , \] where $\kappa(x,z)$ is a Borel measurable function on $\bf{R}^d\times \bf{R}^d$ satisfying $0<\kappa_0\le \kappa(x,z)\le \kappa_1$, $\kappa(x,z)=\kappa(x,-...

Validity of spin wave theory for the quantum Heisenberg model

Seiringer, Robert (2014)
Publisher: CIRM
Embargo end date: 2014/08/25

TTLEM - TopoToolbox Landscape Evolution: Synthetic model run

Campforts, Benjamin (2016)
Publisher: Copernicus Publications
Synthetic landscape evolution simulated with TTLEM software. Model parameters are documented in the attached file.