The Hanna Neumann conjecture is a statement about the rank of intersection two finitely generated subgroups free group. was posed by in 1957. In 2011, strengthened version proved independently Joel Friedman and Igor Mineyev. this paper we show that holds not only groups but also non-solvable surface groups. addition, retract group inert. This implies Dicks–Ventura inertia for

Fredrik Almqvist (a), Per Artursson (b), Hanna Axelsson (c), Marcus Carlsson (a) Inger Cullman (a), Mikael Elofsson (a), Per-Anders Enquist (a), Jonas Eriksson (a), Anders Esberg (a), Anna-Lena Gustavsson (c), Lars Hammarström (c), Martin Haraldsson (c), Annika Jenmalm Jensen* (c), Lars Johansson (c), Lucia Lazorova (b), Thomas Lundbäck (c), Maria Mastej (b), Weixing Qian (a), Kristmundur Sigmu...

Senior Researcher, PhD Hanna Suominen is an experienced researcher, coordinator and teacher on health and wellness technologies. Her research interests are developing and evaluating methods and applications of machine learning, mathematical modeling, and human language technologies. Hanna has contributed to numerous successful projects with research, industry, governmental, and educational part...

Parasitisation of Yponomeuta malinellus feeding on Crataegus monogyna in the allotment gardens city Poznań, Poland | Hanna Piekarska-Boniecka, Marta Rzańska-Wieczorek, Idzi Siatkowski, Tadeusz Barczak Agricultural Journals

Ian G. Jamieson, Sabrina S. Taylor, Lisa N. Tracy, Hanna Kokko, and Doug P. Armstrong Department of Zoology, University of Otago, P.O. Box 56, Dunedin, 9054, New Zealand, Department of Forest Sciences, Centre for Applied Conservation Research, 3041 2424 Main Mall, Vancouver, British Columbia, Canada V6T 1Z4, Department of Biological and Environmental Science, P.O. Box 56, University of Helsinki...

Let (Gi | i ∈ I) be a family of groups, let F be a free group, and let G = F ∗ ∗ i∈I Gi, the free product of F and all the Gi. Let F denote the set of all finitely generated subgroups H of G which have the property that, for each g ∈ G and each i ∈ I, H∩Ggi = {1}. By the Kurosh Subgroup Theorem, every element of F is a free group. For each free group H, the reduced rank of H, denoted r̄(H), is d...