Results 91 to 100 of about 142,721 (259)
FlexMat, EarlyView.Addressing the challenges inherent in dry reforming of methane (DRM), this paper focuses on the structural design and performance optimization of Ni‐based catalysts. The modulation strategies for DRM are systematically reviewed across four dimensions: the micromorphology of active metals, metal‐support interactions, electronic modifications by ...
Bowei Cao, Junlei Zhang, Wanglei Wang
wiley +1 more source
On the determination of the Singer transfer
Vietnam Journal of Science, Technology and Engineering, 2018 Let Pk be the graded polynomial algebra F2[x1, x2, . . . , xk] with the degree of each generator xi being 1, where F2 denote the prime field of two elements, and let GLk be the general linear group over F2 which acts regularly on Pk.
Sum Nguyen
doaj +1 more source
Isomorphism Classes of Generating Sets
We prove that for any two regular cardinals $ω<λ_0<λ_1$ there is a ccc forcing extension where there is an ultrafilter $U$ on $ω$ with a base $\mathcal{B}$ such that $(\mathcal{B},\supseteq^*)\cong λ_0\timesλ_1$. We use similar ideas to construct an ultrafilter with a base $\mathcal{B}$ as above which is order isomorphic to any given two ...
Benhamou, Tom +4 more
openaire +2 more sources
Isomorphism classes of cycle permutation graphs
Discrete Mathematics, 1992 G. Chartrand and F. Harary introduced permutation graphs as a generalization of the well-known Petersen graph. The authors construct a cycle permutation graph as a covering graph over the dumbbell graph. They also give a new characterization of the case when two given cycle permutation graphs are isomorphic by a positive or a negative natural ...
KWAK, JH, LEE, J
openaire +2 more sources
Journal of Corporate Accounting &Finance, EarlyView.ABSTRACT This study investigates how Corporate Digital Transformation (CDT) influences audit opinions in Chinese A‐share‐listed non‐financial firms from 2011 to 2022, with a focus on the moderating role of Economic Policy Uncertainty (EPU). Results reveal an inverted U‐shaped relationship: moderate levels of CDT enhance audit outcomes through improved ...
He Min +2 more
wiley +1 more source
A method for counting the number of polynomial equivalence classes
Journal of Mathematical Cryptology, 2013 As one of the most fundamental problems in multivariate public key cryptosystems (MPKC), Isomorphism of Polynomial (IP) induces an equivalence relation on the polynomials systems.
Wang Tianze, Lin Dongdai
doaj +1 more source
Co-actions, Isometries, and isomorphism classes of Hilbert modules. [PDF]
Adv Oper Theory, 2021 Kučerovský DZ.
europepmc +1 more source
R ( 5 , 5 ) ≤ 46 $R(5,5)\le 46$
Journal of Graph Theory, EarlyView.ABSTRACT We prove that the Ramsey number R ( 5 , 5 ) $R(5,5)$ is less than or equal to 46. The proof uses a combination of linear programming and checking a large number of cases by computer. All of the computational parts of the proof were independently implemented by both authors, with consistent results.
Vigleik Angeltveit, Brendan D. McKay
wiley +1 more source
The Homomorphism Poset of K_{2,n}
, 2012 A geometric graph is a simple graph G together with a straight line drawing of G in the plane with the vertices in general position. Two geometric realizations of a simple graph are geo-isomorphic if there is a vertex bijection between them that ...
Cockburn, Sally, Song, Yonghyun
core