Results 31 to 40 of about 205,731 (305)

Newton Polytopes of Cluster Variables of Type $A_n$ [PDF]

Discrete Mathematics & Theoretical Computer Science, 2014
We study Newton polytopes of cluster variables in type $A_n$ cluster algebras, whose cluster and coefficient variables are indexed by the diagonals and boundary segments of a polygon.
Adam Kalman
doaj   +1 more source

Rethinking the Magnetic Properties of Lepidocrocite: A Density Functional Theory and Cluster Expansion Study

, 2020
The iron oxyhydroxide lepidocrocite (γ-FeOOH) is an abundant mineral critical to a number of chemical and technological applications. Of particular interest is the ground state and finite temperature magnetic order, and the subsequent ...
Micah, Prange, Daniel, Pope, Kevin, Rosso, Aurora, Clark   +3 more
core   +1 more source

Approaches for handling high-dimensional cluster expansions of ionic systems

npj Computational Materials, 2022
Disordered multicomponent systems attract great interest due to their engineering design flexibility and subsequent rich space of properties. However, detailed characterization of the structure and atomic correlations remains challenging and hinders full
Julia H. Yang, Tina Chen, Luis Barroso-Luque, Zinab Jadidi, Gerbrand Ceder   +4 more
doaj   +1 more source

Query expansion based on clustered results [PDF]

Proceedings of the VLDB Endowment, 2011
Query expansion is a functionality of search engines that suggests a set of related queries for a user-issued keyword query. Typical corpus-driven keyword query expansion approaches return popular words in the results as expanded queries. Using these approaches, the expanded queries may correspond to a subset of possible query semantics, and thus miss ...
Ziyang Liu 0001, Sivaramakrishnan Natarajan, Yi Chen 0001   +2 more
openaire   +2 more sources

Transition from substorm growth to substorm expansion phase as observed with a radial configuration of ISTP and Cluster spacecraft [PDF]

, 2005
International audienceTransition from the growth phase to the substorm expansion during a well-isolated substorm with a strong growth phase is investigated using a unique radial (THEMIS-like) spacecraft constellation near midnight, including the probing ...
Sergeev, V.A., T. Nagai, Kubyshkina, M. V., Slavin, J., Nagai, T., Klecker, B., Mende, S., Thomsen, M., Pulkkinen, T., Slavin, J.A., Sergeev, V. A., Sauvaud, J.-A., V. Angelopoulos, Kubyshkina, M., Thomsen, M.F., S. B. Mende, V. A. Sergeev, Kubyshkina, M.V., Amm, O., Sauvaud, J., J.-A. Sauvaud, Nakamura, R., Mende, S.B., O. Amm, T. Pulkkinen, Baumjohann, W., Thomsen, M. F., Sergeev, V., Angelopoulos, V., Slavin, J. A., M. V. Kubyshkina, J. A. Slavin, M. F. Thomsen, Mende, S. B., B. Klecker, W. Baumjohann, R. Nakamura   +36 more
core   +1 more source

Simulating thermal density operators with cluster expansions and tensor networks

SciPost Physics, 2023
We provide an efficient approximation for the exponential of a local operator in quantum spin systems using tensor-network representations of a cluster expansion. We benchmark this cluster tensor network operator (cluster TNO) for one-dimensional systems,
Bram Vanhecke, David Devoogdt, Frank Verstraete, Laurens Vanderstraeten
doaj   +1 more source

Coordinated studies of the geospace environment using cluster, satellite and ground-based data: An interim review [PDF]

, 2005
A little more than four years after its launch, the first magnetospheric, multi-satellite mission Cluster has already tremendously contributed to our understanding about the coupled solar wind - magnetosphere - ionosphere system.
Donovan, E. F., Opgenoorth, H.-J., M. Dunlop, Strömme, A., Frey, H., Dunlop, M., Aikio, A., E. F. Donovan, Marchaudon, A., Amm, O., A. Aikio, A. Marchaudon, Kauristie, K., Nakamura, R., O. Amm, Lester, M., I. W. McCrea, Wild, J. A., Strømme, A., H.-J. Opgenoorth, A. Strømme, J. A. Wild, M. Lester, McCrea, I. W., K. Kauristie, Frey, H. U., H. Frey, R. Nakamura, Opgenoorth, H. J.   +28 more
core   +1 more source

Cluster Expansions and Correlation Functions [PDF]

Moscow Mathematical Journal, 2004
11 ...
openaire   +4 more sources

Alfvén waves in the near-PSBL lobe: Cluster observations [PDF]

, 2006
Electromagnetic low-frequency waves in the magnetotail lobe close to the PSBL (Plasma Sheet Boundary Layer) are studied using the Cluster spacecraft.
Vörös, Z., H. Rème, Puhl-Quinn, P., Balogh, A., Klecker, B., R. B. Torbert, Seki, K., Asano, Y., Paschmann, G., K. Seki, Z. Vörös, P. Canu, Décréau, Pierrette, T. L. Zhang, Takada, T., A. Runov, Zhang, T., P. M. E. Décréau, Rème, H., Volwerk, M., Nakamura, R., Baumjohann, W., Torbert, R.B., M. Volwerk, Torbert, R., Y. Asano, G. Paschmann, Runov, A., Décréau, P. M. E., Décréau, P., Zhang, T.L., A. Balogh, Canu, P., Décréau, P.M.E., T. Takada, B. Klecker, Zhang, T. L., W. Baumjohann, P. Puhl-Quinn, R. Nakamura, Torbert, R. B.   +40 more
core   +1 more source

Expansion posets for polygon cluster algebras

, 2020
Define an expansion poset to be the poset of monomials of a cluster variable attached to an arc in a polygon, where each monomial is represented by the corresponding combinatorial object from some fixed combinatorial cluster expansion formula.
Claussen, Andrew
core   +1 more source