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EJC
2010
13 years 10 months ago
Inversion of some series of free quasi-symmetric functions
We give a combinatorial formula for the inverses of the alternating sums of free quasi-symmetric functions of the form F(I) where I runs over compositions with parts in a prescribe...
Florent Hivert, Jean-Christophe Novelli, Jean-Yves...
IPL
2010
160views more  IPL 2010»
13 years 8 months ago
Antimagic labeling and canonical decomposition of graphs
An antimagic labeling of a connected graph with m edges is an injective assignment of labels from {1, . . . , m} to the edges such that the sums of incident labels are distinct at...
Michael D. Barrus
IPL
2010
80views more  IPL 2010»
13 years 8 months ago
The reachability problem for branching vector addition systems requires doubly-exponential space
Branching vector addition systems are an extension of vector addition systems where new reachable vectors may be obtained by summing two reachable vectors and adding an integral v...
Ranko Lazic
JCT
2010
65views more  JCT 2010»
13 years 8 months ago
Multiple cross-intersecting families of signed sets
A k-signed r-set on [n] = {1, ..., n} is an ordered pair (A, f), where A is an rsubset of [n] and f is a function from A to [k]. Families A1, ..., Ap are said to be cross-intersec...
Peter Borg, Imre Leader
VTC
2010
IEEE
183views Communications» more  VTC 2010»
13 years 8 months ago
Joint Subcarrier and Power Allocation for an OFDMA Relay Network with Multicells
—In this paper, we propose a new resource allocation scheme for an OFDMA relay network with multicells. In the proposed scheme, by sharing the channel state information (CSI) bet...
Dongwook Choi, Dongwoo Lee, Jae Hong Lee