Zobrazeno 1 - 10
of 571
pro vyhledávání: '"Christopher, Lloyd"'
Given a digraph, an ordering of its vertices defines a backedge graph, namely the undirected graph whose edges correspond to the arcs pointing backwards with respect to the order. The degreewidth of a digraph is the minimum over all ordering of the m
Externí odkaz:
http://arxiv.org/abs/2407.19270
Autor:
Simon, Christopher-Lloyd, Stucky, Ben
We introduce a $1$-player game called \emph{pin the loop} and analyse its complexity. A loop is a generic immersion of the circle in a surface, considered up to isotopy. A loop is taut when it is minimally intersecting in its homotopy class. A pinnin
Externí odkaz:
http://arxiv.org/abs/2405.16216
The modular group $\operatorname{PSL}_2(\mathbb{Z})$ acts on the upper-half plane $\mathbb{HP}$ with quotient the modular orbifold, uniformized by the function $\mathfrak{j} \colon \mathbb{HP}\to \mathbb{C}$. We first show that second derived subgrou
Externí odkaz:
http://arxiv.org/abs/2402.17628
Autor:
Simon, Christopher-Lloyd
A filoop is a generic immersion of a circle in a closed oriented surface, whose complement is a disjoint union of discs, considered up to orientation preserving diffeomorphisms. It gives rise to a chord diagram C which has an interlace graph G, calle
Externí odkaz:
http://arxiv.org/abs/2310.08806
Autor:
Simon, Christopher-Lloyd
The modular group PSL(2;Z) acts on the hyperbolic plane HP with quotient the modular surface M, whose unit tangent bundle U is a 3-manifold homeomorphic to the complement of the trefoil knot in the 3-sphere. The hyperbolic conjugacy classes of PSL(2;
Externí odkaz:
http://arxiv.org/abs/2211.05957
Autor:
Maximillian A. Robinson, Alan Kennedy, Carolina T. Orozco, Hung-Chang Chen, Erin Waters, Dalisay Giovacchini, Kay Yeung, Lily Filer, Claudia Hinze, Christopher Lloyd, Simon J. Dovedi, David M. Sansom
Publikováno v:
Cell Reports, Vol 43, Iss 9, Pp 114768- (2024)
Summary: The CTLA-4 and PD-1 checkpoints control immune responses and are key targets in immunotherapy. Both pathways are connected via a cis interaction between CD80 and PD-L1, the ligands for CTLA-4 and PD-1, respectively. This cis interaction prev
Externí odkaz:
https://doaj.org/article/bd659b5fd6cd460e8b103ac0c7d928f7
Autor:
Simon, Christopher-Lloyd
We first describe, over a field K of characteristic different from 2, the orbits for the adjoint actions of the Lie groups PGL(2, K) and PSL(2, K) on their Lie algebra sl(2, K). While the former are well known, the latter lead to the resolution of ge
Externí odkaz:
http://arxiv.org/abs/2210.02481
Autor:
Simon, Christopher-Lloyd
We describe the topology of singular real algebraic curves in a smooth surface. We enumerate and bound in terms of the degree the number of topological types of singular algebraic curves in the real projective plane.
Comment: 32 pages, in French
Comment: 32 pages, in French
Externí odkaz:
http://arxiv.org/abs/2106.15450
Publikováno v:
Geom. Topol. 28 (2024) 593-625
We study the space of measured laminations ML on a closed surface from the valuative point of view. We introduce and study a notion of Newton polytope for an algebraic function on the character variety. We prove for instance that trace functions have
Externí odkaz:
http://arxiv.org/abs/2104.04340
Autor:
Liena Zaidan, Inna Novodchuk, Alexander H.Xu, Alexandru Nica, Saeed Takaloo, Christopher Lloyd, Reza Karimi, Joe Sanderson, Michal Bajcsy, Mustafa Yavuz
Publikováno v:
Materials, Vol 17, Iss 15, p 3648 (2024)
Escherichia coli (E. coli) was among the first organisms to have its complete genome published (Genome Sequence of E. coli 1997 Science). It is used as a model system in microbiology research. E. coli can cause life-threatening illnesses, particularl
Externí odkaz:
https://doaj.org/article/d561ae816aee489d85bef2511d40b75f