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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：A link invariant from higher-dimensional Heegaard Floer homology
高维 Heegaard-Floer同调 链接不变量
2023/11/13
We define a higher-dimensional analogue of symplectic Khovanov homology. Consider the standard Lefschetz fibration of a 2n-dimensional Milnor fiber of the A_{k-1} singularity. We represent a link by a...
Convex optimization of output link scheduling and active queue management in QoS constrained packet switches
Algorithm switches generalized geometric programming convex optimization
2015/8/11
We present two novel algorithms at the ingress and egress of packet switches with QoS provisioning and fairness constraints. We first provide a suite of generalized weighted fair queuing formulations ...
Link Prediction in Graphs with Autoregressive Features
Autoregressive Features Link Prediction Graphs
2012/11/22
In the paper, we consider the problem of link prediction in time-evolving graphs. We assume that certain graph features, such as the node degree, follow a vector autoregressive (VAR) model and we prop...
Epimorphisms from 2-bridge link groups onto Heckoid groups (II)
Epimorphisms 2-bridge link groups Group Theory
2012/6/18
We describe all upper-meridian-pair-preserving epimorphisms from 2-bridge link groups onto even Heckoid groups.
Prime component-preservingly amphicheiral link with odd minimal crossing number
component-preservingly amphicheiral link minimal crossing number Tait's conjecture
2012/3/1
For every odd integer $c\ge 21$, we raise an example of a prime component-preservingly amphicheiral link with minimal crossing number $c$.
The link concordance invariant from Lee homology
link concordance invariant Lee homology Geometric Topology
2011/9/19
Abstract: We use the knot homology of Khovanov and Lee to construct link concordance invariants generalizing the Rasmussen $s$-invariant of knots. The relevant invariant for a link is a filtration on ...
An elementary construction of Khovanov-Rozansky type link homology
elementary construction Khovanov-Rozansky type link homology
2011/2/22
In this article, we give an elementary construction of sl(n)-homological invariants of links presented by braid forms. The Euler characteristic of this complex is equal to sl(n) quantum polynomial inv...
Smooth concordance of links topologically concordant to the Hopf link
Smooth concordance of links Hopf link
2011/1/20
It was shown by Jim Davis that a 2-component link with Alexander polynomial one is topologically concordant to the Hopf link. In this paper, we show that there is a 2-component link with Alexander pol...
Gaussian Broadcast Channels with an Orthogonal and Bidirectional Cooperation Link
Gaussian Broadcast Channels Orthogonal Bidirectional Cooperation Link
2010/11/24
This paper considers a system where one transmitter broadcasts a single common message to two receivers linked by a bidirectional cooperation channel, which is assumed to be orthogonal to the downlin...
Network error correction with unequal link capacities
Network error correction unequal link capacities
2010/11/22
This paper studies the capacity of single-source single-sink noiseless networks under adversarial or arbitrary errors on no more than z edges. Unlike prior papers, which assume equal capacities on al...
Reciprocal link among the Qiao-Liu peakon equation and the modified Korteweg-de Vries equation
Exactly Solvable and Integrable Systems (nlin.SI) Mathematical Physics (math-ph)
2010/11/10
This paper has been withdrawn by the author. The result is already known.
Overlay Protection Against Link Failures Using Network Coding
Overlay Protection Link Failures Network Coding
2010/11/22
This paper introduces a network coding-based protection scheme against single and multiple link failures. The proposed strategy ensures that in a connection, each node receives two copies of the same ...
Twisted acyclicity of a circle and link signatures
Twisted acyclicity of a circle link signatures
2010/11/30
Homology of the circle with non-trivial local coefficients is trivial.From this well-known fact we deduce geometric corollaries concerning links of codimension two. In particular, the Murasugi-Tristra...
Identifying the Canonical Component for the Whitehead Link
Canonical Component Whitehead Link
2010/12/8
In this paper we determine topologically the canonical component of the SL2(C) character variety of the Whitehead link complement.
Joint Relay Selection and Link Adaptation for Distributed Beamforming in Regenerative Cooperative Networks
relay selection link adaptation distributed beamforming signaling throughput
2010/11/26
Relay selection enhances the performance of the cooperative networks by selecting the links with higher capacity.Meanwhile link adaptation improves the spectral efficiency of wireless data-centric net...