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563  Articles
1 of 57 pages  |  10  records  |  more records»
We study the problem of lifting an Abelian group H of automorphisms of a closed Riemann surface S (containing anticonformals ones) to a suitable Schottky uniformization of S (that is, when H is of Schottky type). If H+ is the index two subgroup of or... see more

In this note we consider a class of groups of conformal automorphisms of closed Riemann surfaces containing those which can be lifted to some Schottky uniformization. These groups are those which satisfy a necessary condition for the Schottky lifting prop... see more

In these notes we show that if H is a group of conformal automorphisms, isomorphic to a dihedral group, acting free fixed points on a closed Riemann surface S, then there is a Schottky uniformization of S for which H lifts. We also give an explicit exampl... see more

A regular cover of a connected graph is called dihedral ifits transformation group is dihedral. In this paper, the authors clas-sify all dihedral coverings of the Heawood graph whose fibre-preservingautomorphism subgroups act edge-transitively.

Let LL be an algebra over a field FF with the binary operations ++ and [,][,]. Then LL is called a left Leibniz algebra if it satisfies the left Leibniz identity: [[a,b],c]=[a,[b,c]]-[b,[a,c]][[a,b],c]=[a,[b,c]]-[b,[a,c]] for all elements a,b,c?La,b,c\in ... see more

Cluster automorphisms have been shown to have links to the mapping class groups of surfaces, maximal green sequences and to exchange graph automorphisms for skew-symmetric cluster algebras. In this paper we generalise these results to the s... see more

Proses instalasi merupakan tahap terakhir dari serangkaian tahapan fabrikasi struktur Jacket. Pada penelitian ini, struktur Jacket akan diinstalasi dengan metode lifting. Keamanan pada proses lifting perlu diperhitungkan secara tepat agar selama proses ti... see more

There is no literature comparing the effectiveness of laser-cutting or molded barbed polydioxanone (PDO) threads when used in protocols for facial lifting. The objective of this study was to compare the efficiency of laser-cutting (n=10) or molded (n=15) ... see more

Almost every year, floods disaster becomes the scourge of many countries in the world, including Indonesia.  When the flood comes and submerges the houses, every item and household furniture in it will also be submerged in flood water. Furniture that... see more

1 of 57 pages  |  10  records  |  more records»