502 citations
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Showing 2018Show all
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gr-qc2018★ 10 cited
Relationship between Bondi-Sachs quantities and source of gravitational radiation in asymptotically de Sitter spacetime
Xiaokai He, Jiliang Jing, Zhoujian Cao
Gravitational radiation plays an important role in astrophysics. Based on the fact that our universe is expanding, the gravitational radiation when a positive cosmological constant…
math.CO2018
Proving a conjecture on chromatic polynomials by counting the number of acyclic orientations
Fengming Dong, Jun Ge, Helin Gong +3
The chromatic polynomial of a graph of order can be expressed as , where is interpreted as the number of broken-cycle…