Results 61 to 70 of about 200,479 (255)

Closed subgroups of the infinite symmetric group [PDF]

Algebra universalis, 2006
33 pages. See also http://math.berkeley.edu/~gbergman/papers and http://shelah.logic.at (pub. 823). To appear, Alg.Univ., issue honoring W.Taylor. Main results as before (greater length due to AU formatting), but some new results in \S\S11-12. Errors in subscripts between displays (12) and (13) fixed. Error in title of orig. posting fixed.
Bergman, George M, Shelah, S
openaire   +4 more sources

Positive speed for high-degree automaton groups

, 2011
Mother groups are the basic building blocks for polynomial automaton groups. We show that, in contrast with mother groups of degree 0 or 1, any bounded, symmetric, generating random walk on the mother groups of degree at least 3 has positive speed.
Amir, Gideon, Virag, Balint
core   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Duplex Stainless Steel Laser‐Surface Textured: Stability in Brine Solution

Advanced Engineering Materials, EarlyView.
Controlled laser‐surface treatment (LST) of duplex DSS2205 steel is performed to increase its stability in brine solution under cyclic electrochemical assays. The superior protection with respect to flat and smooth panels is attributed to the presence of FeCr2O4 as the main protective oxide layer in the LST surface, after corrosion tests. The stability
Mohammad Rezayat, Hamidreza Enshaei, Elaine Armelin, José I. Iribarren, Antonio Mateo, Miguel Morales   +5 more
wiley   +1 more source

Are primitive words universal for infinite symmetric groups? [PDF]

Transactions of the American Mathematical Society, 1983
Let W = W ( x 1 , … , x j ) W = W({x_1}, \ldots ,{x_j}) be any word in the j j free generators x 1
openaire   +2 more sources

Induced Representations of the Infinite Symmetric Group [PDF]

Pure and Applied Mathematics Quarterly, 2007
We study the representations of the infinite symmetric group induced from the identity representations of Young subgroups. It turns out that such induced representations can be either of type I or of type II. Each Young subgroup corresponds to a partition of the set of positive integers; depending on the sizes of blocks of this partition, we divide ...
N. V. Tsilevich, A. M. Vershik
openaire   +1 more source

Elinvar Materials: Recent Progress and Challenges

Advanced Engineering Materials, EarlyView.
Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
wiley   +1 more source

Certain unitary representations of the infinite symmetric group, II [PDF]

Nagoya Mathematical Journal, 1987
The infinite symmetric group is the discrete group of all finite permutations of the set X of all natural numbers. Among discrete groups, it has distinctive features from the viewpoint of representation theory and harmonic analysis. First, it is one of the most typical ICC-groups as well as free groups and known to be a group of non-type I.
openaire   +6 more sources

Infinite Dimensional Geometry and Quantum Field Theory of Strings. I. Infinite Dimensional Geometry of Second Quantized Free String

, 1994
There are investigated several objects of an INFINITE DIMENSIONAL GEOMETRY appearing from the second quantization of a free string. The paper contains 2 chapters: 1st is devoted to the infinite dimensional geometry of flag, fundamental and $\Pi$-spaces ...
Antoniadis, Arnold, Bakas, Bakas, Bakas, Batalin, Bernstein, Bilal, Bowick, Bowick, Cartan, Cartan, D.V. Juriev, Fairlie, Fairlie, Fairlie, Fairlie, Feigin, Floratos, Gelfand, Gervais, Gervais, Gervais, Gervais, Gervais, Gervais, Gervais, Griffiths, Juriev, Juriev, Juriev, Juriev, Juriev, Juriev, Juriev, Juriev, Juriev, Juriev, Juriev, Kac, Kac, Karasev, Khesin, Kirillov, Kirillov, Kirillov, Kirillov, Kirillov, Kravchenko, Lukyanov, Lukyanov, Manin, Mikheev, Mikheev, Morozov, Morozov, Ovsienko, Ovsienko, Pope, Pope, Pope, Radul, Radul, Sabinin, Vaysburd, Zamolodchikov, Zamolodchikov   +66 more
core   +4 more sources

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source