… In Section 8 and in the Appendix (written by Osin and Sapir), we prove the characterization
… piece M and not contained in M , then a point z in p ⧹ M is on a sub-arc p ′ of p intersecting …

… Meakin and M.Sapir and was first explored by V. Kilibarda, in her thesis [17]. In particular,
she proved that every equivalence class of semigroup diagrams contains unique diagram …

… For example if :1; is a natural number then we can represent m as :1; units. Then the size of
:c will be equal to 2:. If we represent a; as a sequence of binary digits then the size of x will be …

OBJECTIVE: To assess the relationship between ethnicity and Health Care wishes, including
Advance Directives, in a group of frail older persons in PACE (Program For All Inclusive …

The rate constants of radiationless S 1 → T n and T 1 → S 0 intersystem crossing of six
helicenes have been evaluated by combining emission lifetimes and quantum yields of …

We construct a finitely presented non-amenable group without free non-cyclic subgroups thus
providing a finitely presented counterexample to von Neumann’s problem. Our group is an …

… Is every semigroup in 97t satisfying an identity of the form xn =xn+m, m > 1, locally finite?
P2 (the analogue of the generalized Burnside problem). Is every periodic semigroup in 371 …

… After m hours you will get a word of length m. For example, you can drive along the US
Interstate 80 from Chicago (IL) to Lincoln (NE) with a speed of 65 miles per hour and every hour …

Divergence functions of a metric space estimate the length of a path connecting two points $
A $, $ B $ at distance $\le n $ avoiding a large enough ball around a third point $ C $. We …

… Sapir realized that although the group B'(M) does not simulate the Turing machine M, it still
simulates a "machine" related to M… Sapir's proof of this fact presented in this paper is probably …