Results 51 to 60 of about 113,300 (325)

Perfect octagon quadrangle systems

Discrete Mathematics, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
BERARDI L, GIONFRIDDO, Mario, ROTA R.
openaire   +4 more sources

Geological mapping of the Hokusai (H05) quadrangle of Mercury: Status update [PDF]

, 2018
[Introduction] MESSENGER data are being used to construct ~1:3M scale quadrangle geological maps of Mercury.
Balme, Matthew, Conway, Susan, Rothery, David, Wright, Jack   +3 more
core   +1 more source

Pentagonal 2D Altermagnets: Material Screening and Altermagnetic Tunneling Junction Device Application

Advanced Functional Materials, EarlyView.
From a database of 170 pentagonal 2D materials, 4 candidates exhibiting altermagnetic ordering are screened. Furthermore, the spin‐splitting and unconventional boundary states in the pentagonal 2D altermagnetic monolayer MnS2 are investigated. A MnS2‐based altermagnetic tunneling junction is designed and, through ab initio quantum transport simulations,
Jianhua Wang, Xingyue Yang, Zongmeng Yang, Jing Lu, Pin Ho, Wenhong Wang, Yee Sin Ang, Zhenxiang Cheng, Shibo Fang   +8 more
wiley   +1 more source

Cyclically five-connected cubic graphs

, 2017
A cubic graph $G$ is cyclically 5-connected if $G$ is simple, 3-connected, has at least 10 vertices and for every set $F$ of edges of size at most four, at most one component of $G\backslash F$ contains circuits.
Aldred, Barnette, Butler, Diestel, Edwards, McCuaig, McCuaig, Robertson, Robertson, Robertson, Robertson, Tutte, Tutte   +12 more
core   +1 more source

Band Alignment in In‐Oxo Metal Porphyrin SURMOF Heterojunctions

Advanced Functional Materials, EarlyView.
Porphyrin core metalation in indium‑oxo SURMOFs enables systematic tuning of band edge positions without altering the crystal structure. First‑principles calculations reveal type‑I and type‑II heterostructures as well as multi‑junction energy cascades, establishing a modular strategy for exciton funneling and charge separation in optoelectronic ...
Puja Singhvi, Nina Vankova, Thomas Heine
wiley   +1 more source

On Some Properties of a Complete Quadrangle

AppliedMath
In this paper, we study the properties of a complete quadrangle in the Euclidean plane. The proofs are based on using rectangular coordinates symmetrically on four vertices and four parameters a,b,c,d.
Vladimir Volenec, Marija Šimić Horvath, Ema Jurkin   +2 more
doaj   +1 more source

Perfect Octagon Quadrangle Systems with an upper C4-system and a large spectrum [PDF]

Computer Science Journal of Moldova, 2011
An octagon quadrangle is the graph consisting of an 8-cycle (x1, x2,..., x8) with two additional chords: the edges {x1, x4} and {x5, x8}. An octagon quadrangle system of order ν and index λ [OQS] is a pair (X,H), where X is a finite set of ν vertices and
Luigia Berardi, Mario Gionfriddo, Rosaria Rota   +2 more
doaj  

The pseudo-hyperplanes and homogeneous pseudo-embeddings of the generalized quadrangles of order (3, t) [PDF]

, 2012
In the paper "as reported by De Bruyn (Adv Geom, to appear)", we introduced the notions of pseudo-hyperplane and pseudo-embedding of a point-line geometry and proved that every generalized quadrangle of order (s, t), 2 a parts per thousand currency sign ...
De Bruyn, Bart
core   +2 more sources

On‐Surface Indigo‐Based Bimolecular Coordination Networks with Programmable Regular or Vitreous Structure

Advanced Functional Materials, EarlyView.
A previously unreported coordination motif stabilising single Fe atoms by indigo chelation and pyridyl coordination on Au(111) has been revealed. By using planar tritopic pyridyl linkers (TPyB), extended 2D porous networks of indigo3(TPyB)2Fe6 form. These networks can be crystalline or vitreous and offer an environment where individual coordination ...
Hongxiang Xu, Ritam Chakraborty, Biao Yang, Dennis Meier, Joachim Reichert, Svetlana Klyatskaya, Mario Ruben, Shobhana Narasimhan, Johannes V. Barth, Anthoula C. Papageorgiou   +9 more
wiley   +1 more source

Mineralogy of the Tertiary Clay Deposits in Makkah and Rabigh Quadrangles, West Central Arabian Shield, Saudi Arabia

Sultan Qaboos University Journal for Science, 2002
The mineralogy of the Tertiary clay deposits in Makkah and Rabigh quadrangles was thoroughly investigated by X-ray diffraction and differential thermal and thermogravimetric analyses in addition to other techniques.
M.H. Basyoni, M.A. El Askary, N.A. Saad, R.J. Taj   +3 more
doaj   +1 more source