Wissenschaftliche Artikel

Conner, G. R., Herfort, W., Kent, C., & Pavešić, P. (2018). Recognizing the second derived subgroup of free groups. Journal of Algebra, 516, 396–400. https://doi.org/10.1016/j.jalgebra.2018.09.024 ( reposiTUm)
Conner, G. R., Herfort, W., & Pavešić, P. (2018). Some anomalous examples of lifting spaces. Topology and Its Applications, 239, 234–243. https://doi.org/10.1016/j.topol.2018.02.027 ( reposiTUm)
Herfort, W., & Hojka, W. (2017). Cotorsion and Wild Homology. Israel Journal of Mathematics, 221(1), 275–290. https://doi.org/10.1007/s11856-017-1566-z ( reposiTUm)
Herfort, W., Hofmann, K. H., & Russo, F. G. (2016). A study in locally compact groups-Chabauty space, Sylow theory, the Schur-Zassenhaus formalism, the prime graph for near abelian group. Communications on Stochastic Analysis, 10(4). https://doi.org/10.31390/cosa.10.4.09 ( reposiTUm)
Herfort, W., & Levy, D. (2016). Prosolvability criteria and properties of the prosolvable radical via Sylow sequences. Journal of Group Theory, 19(3), 435–453. https://doi.org/10.1515/jgth-2016-0507 ( reposiTUm)
Herfort, W., Zalesskii, P., & Zapata, T. (2016). Splitting theorems for pro-p groups acting on pro-p trees. Selecta Mathematica (New Series), 22(3), 1245–1268. https://doi.org/10.1007/s00029-015-0217-7 ( reposiTUm)
Auzinger, W., & Herfort, W. (2014). Local error structures and order conditions in terms of Lie elements for exponential splitting schemes. Opuscula Mathematica, 34(2), 243–255. http://hdl.handle.net/20.500.12708/156415 ( reposiTUm)
Heineken, H., Herfort, W., & Kaplan, G. (2014). Nilpotency, Solvability and the Twisting Function of Finite Groups II. Archiv Der Mathematik, 102(6), 501–512. https://doi.org/10.1007/s00013-014-0656-y ( reposiTUm)
Herfort, W. (2013). A Gröbner Shirshov Basis Approach to Hua’s Identity. Contributions to Algebra and Geometry, 55(2), 387–391. https://doi.org/10.1007/s13366-013-0163-5 ( reposiTUm)
Herfort, W. (2013). Factorizing profinite groups. International Journal of Group Theory, 2, 45–47. http://hdl.handle.net/20.500.12708/154753 ( reposiTUm)
Herfort, W., & Zalesskii, P. (2013). Virtually free pro-p groups. PUBLICATIONS MATHEMATIQUES DE L IHES, 118(1), 193–211. https://doi.org/10.1007/s10240-013-0051-4 ( reposiTUm)
Herfort, W., & Plaumann, P. (2011). Boolean and Profinite Loops. Topology Proceedings, 37, 233–237. http://hdl.handle.net/20.500.12708/161696 ( reposiTUm)
Herfort, W., & Zalesskii, P. A. (2010). A virtually free pro-p group need not be the fundamental group of a profinite graph of finite groups. Archiv Der Mathematik, 94(1), 35–41. https://doi.org/10.1007/s00013-009-0063-y ( reposiTUm)
Herfort, W., & Zalesskii, P. A. (2008). Virtually free pro-p groups whose torsion elements have finite centralizer. Bulletin of the London Mathematical Society, 40(6), 929–936. https://doi.org/10.1112/blms/bdn070 ( reposiTUm)
Herfort, W., & Zalesskii, P. A. (2007). Profinite HNN-constructions. Journal of Group Theory, 10(6). https://doi.org/10.1515/jgt.2007.058 ( reposiTUm)
Auzinger, W., & Herfort, W. (2006). A uniform quantitative stiff stability estimate for BDF schemes. Opuscula Mathematica, 26(2), 203–227. http://hdl.handle.net/20.500.12708/171879 ( reposiTUm)
Arad, Z., & Herfort, W. (2005). Maximal cyclic subgroups and prime divisors in finite groups. Archiv Der Mathematik, 85, 31–36. http://hdl.handle.net/20.500.12708/171870 ( reposiTUm)
Herfort, W. (2005). Abschnitt: Some Lemmas on Centralizers (in Teichmüller curves, Galois actions and GT-relations by M.Möller). Mathematische Nachrichten, 278, 1074–1075. http://hdl.handle.net/20.500.12708/171978 ( reposiTUm)
Herfort, W., & Zalesskii, P. (2003). Virtually Free Pro-p Groups. Trabalhos de Matematica, Universidade de Brasilia, Departamento de Matematica, 329, 1–52. http://hdl.handle.net/20.500.12708/174477 ( reposiTUm)

Beiträge in Tagungsbänden

Auzinger, W., Herfort, W., Hofstätter, H., & Koch, O. (2016). Setup of order conditions for splitting methods. In V. P. Gerdt, W. Koepf, W. M. Seiler, & E. V. Vorozhtsov (Eds.), Computer Algebra in Scientific Computing  18th International Workshop, CASC 2016, Bucharest, Romania, September 19-23, 2016, Proceedings (pp. 30–42). Lecture Notes in Computer Science, Springer-Verlag. https://doi.org/10.1007/978-3-319-45641-6_3 ( reposiTUm)
Herfort, W., & Zaleskii, P. (2009). Virtually free pro-p groups. In The Arithmetic of Fields (pp. 347–348). Oberwolfach Reports. http://hdl.handle.net/20.500.12708/40957 ( reposiTUm)
Herfort, W., & Hojka, W. (2006). Attaching to a profinite space. In T. Hawkes, M. Maj, & P. Longobardi (Eds.), Ischia Group Theory 2006 (pp. 166–174). World Scientific. http://hdl.handle.net/20.500.12708/40705 ( reposiTUm)
Bergauer, G., & Herfort, W. (2005). Profinite Graphs -- Comparing Notions. In S. Seghal (Ed.), Proceedings of the Ubatuba Conference - Groups, Rings and Group Rings (pp. 33–41). Marcel Dekker. http://hdl.handle.net/20.500.12708/40562 ( reposiTUm)

Beiträge in Büchern

Herfort, W., & Hojka, W. (2017). On the abelianization of certain topologist’s products. In M. Drosde, L. Fuchs, B. Goldsmith, & L. Strüngmann (Eds.), Groups, Modules, and Model Theory - Surveys and Recent Developments, In Memory of Rüdiger Göbel (pp. 351–358). Springer International Publishing. https://doi.org/10.1007/978-3-319-51718-6_19 ( reposiTUm)
Auzinger, W., Herfort, W., Koch, O., & Thalhammer, M. (2017). The BCH-formula and order conditions for splitting methods. In G. Falcone (Ed.), Lie Groups, Differential Equations, and Geometry (pp. 71–83). Springer. http://hdl.handle.net/20.500.12708/29493 ( reposiTUm)

Präsentationen

Auzinger, W., & Herfort, W. (2015). Singular polynomial systems. IWANASP 2015 - Fifth International Workshop on Analysis and Numerical Approximation of Singular Problems, Lagos, Nigeria. http://hdl.handle.net/20.500.12708/121185 ( reposiTUm)
Hofmann, K. H., Russo, F. G., & Herfort, W. (2014). Locally Compact Near Abelian Groups and Applications. Groups and Topological Groups, Leipzig, Germany, Austria. http://hdl.handle.net/20.500.12708/120714 ( reposiTUm)
Herfort, W., & Hojka, W. (2013). On the Bachmuth-Tomaszewski Basis of F/F’. Gruppen und Topologische Gruppen, Milano, Milano, EU. http://hdl.handle.net/20.500.12708/120308 ( reposiTUm)
Auzinger, W., & Herfort, W. (2013). Local error structures and order conditions for exponential splitting methods. 18th ÖMG Congress and Annual DMV Meeting, Universität Innsbruck, Austria. http://hdl.handle.net/20.500.12708/120386 ( reposiTUm)
Herfort, W., Hofmann, K. H., & Russo, F. G. (2013). Near Abelian Compact Groups. 18th ÖMG Congress and Annual DMV Meeting, Universität Innsbruck, Austria. http://hdl.handle.net/20.500.12708/120726 ( reposiTUm)
Herfort, W., & Kaplan, G. (2013). A Twisting Function of Finite Groups. CSASC 2013 Koper Slovenija, Koper, EU. http://hdl.handle.net/20.500.12708/120725 ( reposiTUm)
Herfort, W., & Legerer, T. (2012). Hua’s Identity via Gröbner-Shirshov Basis Approach. Conference on commutative rings, integer-valued polynomials and polynomial functions in Graz, Austria, Dec. 19-22, 2012, Graz, Austria. http://hdl.handle.net/20.500.12708/120307 ( reposiTUm)
Herfort, W., & Zalesskii, P. (2011). Free by cyclic pro-p groups. Cebir Günleri, Antalya 2011, Antalya, Non-EU. http://hdl.handle.net/20.500.12708/119726 ( reposiTUm)
Herfort, W. (2011). Compact Torsion Groups. Universita Milano, Bicocca, Milano, EU. http://hdl.handle.net/20.500.12708/119727 ( reposiTUm)
Herfort, W., & Zalesskii, P. (2011). Pro-$p$ Groups Acting with Finite Stabilizers on a pro-$p$ Tree, jointly with Pavel Zalesskii (UNB). ÖMG-Tagung-CSASC 2011, Krems, Austria. http://hdl.handle.net/20.500.12708/119869 ( reposiTUm)
Herfort, W., & Hojka, W. (2011). pi_1(HA) kann auf jede proendliche Gruppe abgebildet werden. Gruppen und topologische Gruppen in Würzburg, Würzburg, EU. http://hdl.handle.net/20.500.12708/119871 ( reposiTUm)
Herfort, W. (2010). Symmetrie in Physik und Technik. Wiener Museumsquartier,  MathSpace, Wien, Austria, Austria. http://hdl.handle.net/20.500.12708/119451 ( reposiTUm)
Herfort, W., & Plaumann, P. (2010). Boolean and Profinite Loops. Groups and Topological Groups Paderborn 2010, Paderborn, EU. http://hdl.handle.net/20.500.12708/119452 ( reposiTUm)
Herfort, W. (2010). Stoffbehandlung durch Testfragen. Internationale Tagung über Schulmathematik, TU Vienna, Austria, Austria. http://hdl.handle.net/20.500.12708/119453 ( reposiTUm)
Herfort, W., & Arad, Z. (2010). Groups with subgroups that contain the centralizers of its non-trivial elements. Una Giornata per Silvia, Universita Padova, EU. http://hdl.handle.net/20.500.12708/119455 ( reposiTUm)
Herfort, W., & Arad, Z. (2010). Groups containing a CC-subgroup. Seminar Dipartimento de matematica Universita Milano Bicocca, Milano, EU. http://hdl.handle.net/20.500.12708/119454 ( reposiTUm)
Herfort, W., & Zalesskii, P. (2009). Virtually free po-p groups need not be fundamental groups of profinite graphs of finite p-groups. Groups and Topological Groups Milano 2009, Milano, EU. http://hdl.handle.net/20.500.12708/119458 ( reposiTUm)
Herfort, W., & Zalesskii, P. (2009). Virtually free pro-p groups. 24th Summer Conference on Topology and its Applications, Brno, EU. http://hdl.handle.net/20.500.12708/119459 ( reposiTUm)
Auzinger, W., Kramer, F., & Herfort, W. (2009). A closer look at BDF schemes and their stability. 17th ÖMG Congress / Annual DMV Conference, Graz, Austria. http://hdl.handle.net/20.500.12708/119031 ( reposiTUm)
Herfort, W., & Zalesskii, P. (2009). Virtually free pro-p groups not the fundamental group of a profinite of groups. 17th ÖMG Congress / Annual DMV Conference, Graz, Austria. http://hdl.handle.net/20.500.12708/119462 ( reposiTUm)
Herfort, W. (2009). Comments on periodic multiplicative groups of nearfields. 21st International Conference on Nearrings, nearfields and related topics Vorau (Austria), Vorau, Austria. http://hdl.handle.net/20.500.12708/119460 ( reposiTUm)
Herfort, W., & Zalesskii, P. (2008). Finitely generated finite p-extensions of a free pro-p group. UNAM Cuernavaca, Cuernavaca, Morelos, Mexico, Non-EU. http://hdl.handle.net/20.500.12708/118557 ( reposiTUm)
Herfort, W. (2008). Minicurso: Grupos profinitos. Taller en Algebra y Topologia: grupos y grupos topologicos, Cuernavaca, Morelos, Mexico, Non-EU. http://hdl.handle.net/20.500.12708/118556 ( reposiTUm)
Herfort, W. (2008). Vienna Algebra Day. Vienna Algebra Day, Wien, Austria. http://hdl.handle.net/20.500.12708/118944 ( reposiTUm)
Herfort, W., & Zalesskii, P. (2007). Centralizers in virtually free pro-p groups. Gruppen und topologische Gruppen Debrecen 2007, Debrecen, EU. http://hdl.handle.net/20.500.12708/118242 ( reposiTUm)
Herfort, W. (2007). Fundamentalgruppen von Graphen von Gruppen: Proendliches. Kolloquium am Math. Institut der Montanuniversität Leoben, Leoben, Austria. http://hdl.handle.net/20.500.12708/118493 ( reposiTUm)
Herfort, W. (2006). Profinite HNN-constructions. XIX ESCOLA DE ALGEBRA, Diamantina MG Brasilien, Non-EU. http://hdl.handle.net/20.500.12708/118241 ( reposiTUm)
Herfort, W., & Zalesskii, P. (2006). Finitely generated pro-p groups with trivial centralizers of their torsion elements. Profinite and asymptotic group theory, Levico Terme, EU. http://hdl.handle.net/20.500.12708/118243 ( reposiTUm)
Herfort, W., & Zalesskii, P. (2006). Virtually free pro-p groups and p-adic representations. Profinite and asymptotic group theory, Levico Terme, EU. http://hdl.handle.net/20.500.12708/118244 ( reposiTUm)
Herfort, W. (2005). Profinite Graphs -- Comparing Notions. Tagung über Gruppen und topologische Gruppen, Dresden, Germany, Austria. http://hdl.handle.net/20.500.12708/117469 ( reposiTUm)
Auzinger, W., & Herfort, W. (2005). A uniform quantitative stiff stability estimate for BDF schemes. CDDE 2005 - Conference on Differential and Differential Equations, Danzig, Austria. http://hdl.handle.net/20.500.12708/117487 ( reposiTUm)
Arad, Z., & Herfort, W. (2005). Maximal cyclic groups and prime divisors in finite groups. 70th Workshop on General Algebra, Vienna, Austria, Austria. http://hdl.handle.net/20.500.12708/117479 ( reposiTUm)
Herfort, W. (2004). Finite p-Extensions of Free pro-p Groups. Algebra Seminar am Technion Haifa, Technion Haifa, Austria. http://hdl.handle.net/20.500.12708/116702 ( reposiTUm)
Herfort, W. (2004). Groups with a CC-subgroup. Algebra Seminar Bar Ilan U, Bar Ilan U in Ramat Gan, Austria. http://hdl.handle.net/20.500.12708/116703 ( reposiTUm)
Herfort, W. (2004). Topological Groups containing a CC-subgroup. International Conference on Groups, Rings and Group Rings in Honour of Prof. Cesar Polcino Milies on the occasion of his 60th Birthday, Ubatuba, Sao Paulo Brazil, Austria. http://hdl.handle.net/20.500.12708/116792 ( reposiTUm)
Herfort, W., & Hojka, W. (2004). The Fundamental Groupoid of a profinitely glued space. 18 Escola de Algebra (UNICAMP, Campinas, Brazil), UNICAMP, Campinas, Brazil, Austria. http://hdl.handle.net/20.500.12708/116791 ( reposiTUm)
Herfort, W. (2004). 3-erzeugte A-2 Gruppen, deren maximale Untergruppen 2-erzeugt sind. Tagung über Gruppen und topologische Gruppen, Dresden, Germany, Austria. http://hdl.handle.net/20.500.12708/116986 ( reposiTUm)
Arad, Z., & Herfort, W. (2004). Topologically locally finite groups with a CC-subgroup. Ischia Group Theory 2004 in honour of Marcel Herzog, Ischia, Italien, Austria. http://hdl.handle.net/20.500.12708/116715 ( reposiTUm)
Herfort, W., & Zalesskii, P. (2004). Finite p-Extensions of Free pro-p Groups. Groups in Bressanone - Brixen June, 2nd-5th, 2004, Bressanone - Brixen, Austria. http://hdl.handle.net/20.500.12708/116729 ( reposiTUm)
Herfort, W. (2003). Compact Torsion Groups. Escola de verao, Brasilia, Austria. http://hdl.handle.net/20.500.12708/116350 ( reposiTUm)
Herfort, W. (2003). A classification of finite groups  containing  a CC-subgroup. 8. Österreichisches Mathematikertreffen, Bolzano, Italy, Austria. http://hdl.handle.net/20.500.12708/116354 ( reposiTUm)
Herfort, W. (2003). Any virtually free pro-p groups acts on a pro-p tree with bounded vertex stabilizers. 4 th International Conference in Ukraine, Lviv/Lemberg/Lwow, Austria. http://hdl.handle.net/20.500.12708/116353 ( reposiTUm)
Herfort, W. (2003). Large Abelian  Subgroups  need not exist. Universidade Campinas, Dipartimento Matematica, Campinas, Austria. http://hdl.handle.net/20.500.12708/116351 ( reposiTUm)
Herfort, W. (2003). virtually free pro-p groups. Kapodistrian University, Department of Algebra and Geometry, Athen, Austria. http://hdl.handle.net/20.500.12708/116352 ( reposiTUm)
Herfort, W. (2003). Automorphisms of free pro-p groups. Profinite Groups and Discrete Subgroups of Lie Groups, Oberwolfach, Oberwolfach, D, Austria. http://hdl.handle.net/20.500.12708/116424 ( reposiTUm)
Herfort, W. (2003). Was heisst ’ das Integral kann auf  “elementarem Weg” gefunden werden’? Tag der offenen Tür  der  Institute für Mathematik, TU Wien, Austria. http://hdl.handle.net/20.500.12708/116423 ( reposiTUm)
Herfort, W. (2002). Large Abelian Subgroups need not exist. Dipartimento Matematica U Aquila, L’Aquila, Austria. http://hdl.handle.net/20.500.12708/116348 ( reposiTUm)
Herfort, W. (2002). Finite Automorphism Groups of Free pro-p Groups. Kapodistrian University, Department of Algebra and Geometry, Athen, Austria. http://hdl.handle.net/20.500.12708/116349 ( reposiTUm)
Herfort, W. (2002). Virtually free pro-p Groups. Tagung “The Arithmetic of Fields”, Mathematisches Institut Oberwolfach, Oberwolfach, Austria. http://hdl.handle.net/20.500.12708/116345 ( reposiTUm)
Herfort, W. (2001). Classification of Groups (Finite or Infinite) with a CC-subgroup. Bar Ilan U, Ramat Gan, Israel, Austria. http://hdl.handle.net/20.500.12708/116343 ( reposiTUm)
Herfort, W., & Zalesskii, P. (2001). Finite p-Extensions of Free pro-p Groups. Hebrew University, Jerusalem, Austria. http://hdl.handle.net/20.500.12708/116344 ( reposiTUm)
Herfort, W., & Arad, Z. (2001). (Pro)-finite groups with a CC-subgroup. Tagung: Groups and Topological Groups, Milano 2000, Milano, Austria. http://hdl.handle.net/20.500.12708/116341 ( reposiTUm)
Herfort, W. (2001). A survey on profinite groups. Kapodistrian University, Department of Algebra and Geometry, Athen, Austria. http://hdl.handle.net/20.500.12708/116342 ( reposiTUm)
Herfort, W. (2000). Virtuell freie pro-p Gruppen. Tagung: Gruppen und topologische Gruppen, TU München Juni 2000, München, Austria. http://hdl.handle.net/20.500.12708/116338 ( reposiTUm)
Herfort, W. (2000). Existenz von Rechtsinversen. 4. Workshop über vertauschbare Funktionen, Polynome und Potenzreihen, Tinje/Tainach, Austria. http://hdl.handle.net/20.500.12708/116337 ( reposiTUm)
Herfort, W., & Zalesskii, P. (2000). Finite p-extensions of free pro-p groups. Conferencia Algebra, IME Campinas, Campinas, Brazil, Austria. http://hdl.handle.net/20.500.12708/116340 ( reposiTUm)
Herfort, W. (2000). Virtually free pro-p Groups. Kapodistrian University, Department of Algebra and Geometry, Athen, Austria. http://hdl.handle.net/20.500.12708/116339 ( reposiTUm)
Herfort, W. (2000). Virtually Free pro-p Groups. Tel Aviv University, School of Mathematics, Tel Aviv, Austria. http://hdl.handle.net/20.500.12708/116336 ( reposiTUm)
Herfort, W. (2000). Finite p-Extensions of free pro-p Groups. Dipartimento Matematica U Aquila, L’Aquila, Austria. http://hdl.handle.net/20.500.12708/116347 ( reposiTUm)
Herfort, W. (2000). Compact Groups with Large Abelian Subgroups. Seminar Sophus Lie, Erlangen, Austria. http://hdl.handle.net/20.500.12708/116346 ( reposiTUm)

Berichte

Auzinger, W., & Herfort, W. (2015). An Application of Gröbner Bases to perturbed Polynomial Equations (ASC Report 01/2015; pp. 1–11). Institute of Analysis and Scientific Computing, TU Wien. http://hdl.handle.net/20.500.12708/28525 ( reposiTUm)
Herfort, W., Russo, F., & Hofmann, K. H. (2014). Locally Compact Near Abelian Groups (ASC Report 04/2014; pp. 1–34). Institute of Analysis and Scientific Computing, TU Wien. http://hdl.handle.net/20.500.12708/28223 ( reposiTUm)
Auzinger, W., & Herfort, W. (2013). Local error structures and order conditions in terms of Lie elements for exponential splitting schemes (ASC Report 23/2013; pp. 1–15). Institute of Analysis and Scientific Computing, TU Wien. http://hdl.handle.net/20.500.12708/27975 ( reposiTUm)
Herfort, W. (2003). Linear  Algebra over  finitely generated R-modules. http://hdl.handle.net/20.500.12708/31592 ( reposiTUm)