Speed of random walks, isoperimetry and compression of finitely generated groups

التفاصيل البيبلوغرافية
العنوان: Speed of random walks, isoperimetry and compression of finitely generated groups
المؤلفون: Jérémie Brieussel, Tianyi Zheng
المساهمون: Institut Montpelliérain Alexander Grothendieck (IMAG), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)
بيانات النشر: HAL CCSD, 2019.
سنة النشر: 2019
مصطلحات موضوعية: Group (mathematics), 010102 general mathematics, Cyclic group, Function (mathematics), Random walk, 01 natural sciences, Combinatorics, Mathematics (miscellaneous), Mathematics - Metric Geometry, Solvable group, Wreath product, 0103 physical sciences, Exponent, Mathematics::Metric Geometry, 010307 mathematical physics, 0101 mathematics, Statistics, Probability and Uncertainty, Isoperimetric inequality, [MATH]Mathematics [math], Mathematics - Group Theory, Mathematics - Probability, Mathematics
الوصف: We give a solution to the inverse problem (given a function, find a corresponding group) for large classes of speed, entropy, isoperimetric profile, return probability and $L_p$-compression functions of finitely generated groups of exponential volume growth. For smaller classes, we give solutions among solvable groups. As corollaries, we prove a recent conjecture of Amir on joint evaluation of speed and entropy exponents and we obtain a new proof of the existence of uncountably many pairwise non-quasi-isometric solvable groups, originally due to Cornulier and Tessera. We also obtain a formula relating the $L_p$-compression exponent of a group and its wreath product with the cyclic group for $p$ in $[1,2]$.
اللغة: English
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79994d3c26a98841124909012ceae60fTest
https://hal.archives-ouvertes.fr/hal-02048188Test
حقوق: OPEN
رقم الانضمام: edsair.doi.dedup.....79994d3c26a98841124909012ceae60f
قاعدة البيانات: OpenAIRE