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Created page with "'''Home * People * Torsten Linß''' FILE:TorstenLinss.jpg|border|right|thumb|link=https://www.fernuni-hagen.de/numerik/team/torsten.linss.shtml| Torsten L..."
'''[[Main Page|Home]] * [[People]] * Torsten Linß'''
[[FILE:TorstenLinss.jpg|border|right|thumb|link=https://www.fernuni-hagen.de/numerik/team/torsten.linss.shtml| Torsten Linß <ref>[https://www.fernuni-hagen.de/numerik/team/torsten.linss.shtml Torsten Linß], [https://en.wikipedia.org/wiki/FernUniversit%C3%A4t_Hagen FernUniversität Hagen], Photo by [http://www.hardy-welsch.de/ Hardy Welsch]</ref> ]]
'''Torsten Olaf Linß''', (Torsten Olaf Linss)<br/>
a German [[Chess Problems, Compositions and Studies|chess composer]] and [[FIDE]] [https://en.wikipedia.org/wiki/FIDE_titles#Open_titles International Master] for chess composition, mathematician, professor for [https://en.wikipedia.org/wiki/Numerical_analysis numerical analysis] at [https://en.wikipedia.org/wiki/FernUniversit%C3%A4t_Hagen FernUniversität Hagen],
and before, until 2012 at [https://en.wikipedia.org/wiki/Dresden_University_of_Technology TU Dresden].
He holds a Ph.D. in 1998 from [https://en.wikipedia.org/wiki/University_College_Cork University College Cork] under [[Mathematician#MJStynes|Martin Stynes]].
His research interests include parallel numerical algorithms for [https://en.wikipedia.org/wiki/Partial_differential_equation partial differential equations] and [https://en.wikipedia.org/wiki/Finite_element_method finite element methods], in particular [https://en.wikipedia.org/wiki/Numerical_solution_of_the_convection%E2%80%93diffusion_equation numerical solutions of convection–diffusion] and [https://en.wikipedia.org/wiki/Singular_perturbation singular perturbation equations].
As a chess composer, he founded the German Chess problem magazine ''Harmonie'' in 1987 and is again its publisher since 2013 <ref>[http://www.problemschach.de/harmonie/ harmonie Homepage]</ref>.
As avocational software developer and programmer, Torsten Linß is involved in developing chess problem related software, such as databases for chess problems, and.has further contributed to [[Popeye]], the [[:Category:Open Source|open source]] [[:Category:Problem|program for solving]] orthodox and heterodox chess problems <ref>[https://en.wikipedia.org/wiki/Software_for_handling_chess_problems#Popeye Popeye - from Software for handling chess problems, Wikipedia]</ref> <ref>[http://juliasfairies.com/software/popeye/history-of-popeye/ History of Popeye] by [https://www.thbrand.de/ Thomas Brand], hosted by [http://juliasfairies.com/ Julia Vysotska]</ref>.
=Selected Publications=
==Mathematics==
<ref>[https://dblp.uni-trier.de/pers/hd/l/Lin=szlig=:Torsten dblp: Torsten Linß]</ref>
* [[Torsten Linß]] ('''1998'''). ''Shishkin Meshes and Decompositions for Singularly Perturbed Convection-Diffusion Problems''. Ph.D. thesis, [https://en.wikipedia.org/wiki/University_College_Cork University College Cork] <ref>[http://shishkin.imm.uran.ru/Shishkin.html Grigorii I. Shishkin] ('''1992'''). ''Grid Approximations of Singularly Perturbed Elliptic and Parabolic Equations''. [https://en.wikipedia.org/wiki/Russian_Academy_of_Sciences Russian Academy of Sciences], Ural Branch, [https://en.wikipedia.org/wiki/Yekaterinburg Yekaterinburg] (Russian)</ref>
* [[Torsten Linß]], [[Mathematician#MJStynes|Martin Stynes]] ('''2001'''). ''Numerical methods on Shishkin meshes for linear convection–diffusion problems''. [https://www.journals.elsevier.com/computer-methods-in-applied-mechanics-and-engineering Computer Methods in Applied Mechanics and Engineering], Vol. 190, No. 28
* [[Mathematician#HGRoos|Hans-Görg Roos]], [[Torsten Linß]] ('''2001'''). ''[https://link.springer.com/article/10.1007/s006070170033 Gradient Recovery for Singularly Perturbed Boundary Value Problems I: One-Dimensional Convection-Diffusion]''. [https://en.wikipedia.org/wiki/Computing_(journal) Computing], Vol. 66, No. 2
* [[Torsten Linß]] ('''2009'''). ''Numerical methods for singularly perturbed differential equations''. [http://workshop.math.cas.cz/okmma/c_p_NA_09.html Current Problems in Numerical Analysis]
* [[Torsten Linß]] ('''2009'''). ''[https://link.springer.com/article/10.1007/s11075-008-9228-1 Analysis of a FEM for a coupled system of singularly perturbed reaction-diffusion equations]''. [https://www.springer.com/journal/11075 Numerical Algorithms], Vol. 50, No. 3
* [[Torsten Linß]], [[Mathematician#HGRoos|Hans-Görg Roos]], [https://dblp.uni-trier.de/pers/hd/s/Schopf:Martin Martin Schopf] ('''2012'''). ''[https://link.springer.com/article/10.1007/s10444-011-9195-2 Nitsche-mortaring for singularly perturbed convection-diffusion problems]''. [https://www.springer.com/journal/10444 Advances in Computational Mathematics], Vol. 36, No. 4
==Chess==
* [[Torsten Linß]] ('''2008'''). ''Databases for Chess Problems''. [[Workshop Chess and Mathematics]]
* [https://www.schachbund.de/problem/problemschachaufgabe-392.html Eckart Kummer] ('''2017''').''[https://www.dieschwalbe.de/schwalbe286.htm#tl50 Torsten Linß 50 & opt int 20]''. [https://en.wikipedia.org/wiki/Die_Schwalbe Die Schwalbe], Heft 286 (German)
=External Links=
* [https://www.fernuni-hagen.de/numerik/team/torsten.linss.shtml Torsten Linß], [https://en.wikipedia.org/wiki/FernUniversit%C3%A4t_Hagen FernUniversität Hagen]
* [https://www.genealogy.math.ndsu.nodak.edu/id.php?id=53247 The Mathematics Genealogy Project - Torsten Linss]
* [http://chesscomposers.blogspot.com/2012/07/july-11th.html Chess Composers - Torsten Linß]
* [http://www.kotesovec.cz/torsten.htm Torsten Linss in Prague] by [[Václav Kotěšovec]], May 24, 2007
* [https://www.wfcc.ch/competitions/composing/wcci5f/ WCCI 2010-2012 Selfmates - WFCC]
* [http://www.problemschach.de/harmonie/ harmonie Homepage]
=References=
<references />
'''[[People|Up one level]]'''
[[Category:Chess Composer|Linß]]
[[Category:Chess Programmer|Linß]]
[[Category:Mathematician|Linß]]
[[FILE:TorstenLinss.jpg|border|right|thumb|link=https://www.fernuni-hagen.de/numerik/team/torsten.linss.shtml| Torsten Linß <ref>[https://www.fernuni-hagen.de/numerik/team/torsten.linss.shtml Torsten Linß], [https://en.wikipedia.org/wiki/FernUniversit%C3%A4t_Hagen FernUniversität Hagen], Photo by [http://www.hardy-welsch.de/ Hardy Welsch]</ref> ]]
'''Torsten Olaf Linß''', (Torsten Olaf Linss)<br/>
a German [[Chess Problems, Compositions and Studies|chess composer]] and [[FIDE]] [https://en.wikipedia.org/wiki/FIDE_titles#Open_titles International Master] for chess composition, mathematician, professor for [https://en.wikipedia.org/wiki/Numerical_analysis numerical analysis] at [https://en.wikipedia.org/wiki/FernUniversit%C3%A4t_Hagen FernUniversität Hagen],
and before, until 2012 at [https://en.wikipedia.org/wiki/Dresden_University_of_Technology TU Dresden].
He holds a Ph.D. in 1998 from [https://en.wikipedia.org/wiki/University_College_Cork University College Cork] under [[Mathematician#MJStynes|Martin Stynes]].
His research interests include parallel numerical algorithms for [https://en.wikipedia.org/wiki/Partial_differential_equation partial differential equations] and [https://en.wikipedia.org/wiki/Finite_element_method finite element methods], in particular [https://en.wikipedia.org/wiki/Numerical_solution_of_the_convection%E2%80%93diffusion_equation numerical solutions of convection–diffusion] and [https://en.wikipedia.org/wiki/Singular_perturbation singular perturbation equations].
As a chess composer, he founded the German Chess problem magazine ''Harmonie'' in 1987 and is again its publisher since 2013 <ref>[http://www.problemschach.de/harmonie/ harmonie Homepage]</ref>.
As avocational software developer and programmer, Torsten Linß is involved in developing chess problem related software, such as databases for chess problems, and.has further contributed to [[Popeye]], the [[:Category:Open Source|open source]] [[:Category:Problem|program for solving]] orthodox and heterodox chess problems <ref>[https://en.wikipedia.org/wiki/Software_for_handling_chess_problems#Popeye Popeye - from Software for handling chess problems, Wikipedia]</ref> <ref>[http://juliasfairies.com/software/popeye/history-of-popeye/ History of Popeye] by [https://www.thbrand.de/ Thomas Brand], hosted by [http://juliasfairies.com/ Julia Vysotska]</ref>.
=Selected Publications=
==Mathematics==
<ref>[https://dblp.uni-trier.de/pers/hd/l/Lin=szlig=:Torsten dblp: Torsten Linß]</ref>
* [[Torsten Linß]] ('''1998'''). ''Shishkin Meshes and Decompositions for Singularly Perturbed Convection-Diffusion Problems''. Ph.D. thesis, [https://en.wikipedia.org/wiki/University_College_Cork University College Cork] <ref>[http://shishkin.imm.uran.ru/Shishkin.html Grigorii I. Shishkin] ('''1992'''). ''Grid Approximations of Singularly Perturbed Elliptic and Parabolic Equations''. [https://en.wikipedia.org/wiki/Russian_Academy_of_Sciences Russian Academy of Sciences], Ural Branch, [https://en.wikipedia.org/wiki/Yekaterinburg Yekaterinburg] (Russian)</ref>
* [[Torsten Linß]], [[Mathematician#MJStynes|Martin Stynes]] ('''2001'''). ''Numerical methods on Shishkin meshes for linear convection–diffusion problems''. [https://www.journals.elsevier.com/computer-methods-in-applied-mechanics-and-engineering Computer Methods in Applied Mechanics and Engineering], Vol. 190, No. 28
* [[Mathematician#HGRoos|Hans-Görg Roos]], [[Torsten Linß]] ('''2001'''). ''[https://link.springer.com/article/10.1007/s006070170033 Gradient Recovery for Singularly Perturbed Boundary Value Problems I: One-Dimensional Convection-Diffusion]''. [https://en.wikipedia.org/wiki/Computing_(journal) Computing], Vol. 66, No. 2
* [[Torsten Linß]] ('''2009'''). ''Numerical methods for singularly perturbed differential equations''. [http://workshop.math.cas.cz/okmma/c_p_NA_09.html Current Problems in Numerical Analysis]
* [[Torsten Linß]] ('''2009'''). ''[https://link.springer.com/article/10.1007/s11075-008-9228-1 Analysis of a FEM for a coupled system of singularly perturbed reaction-diffusion equations]''. [https://www.springer.com/journal/11075 Numerical Algorithms], Vol. 50, No. 3
* [[Torsten Linß]], [[Mathematician#HGRoos|Hans-Görg Roos]], [https://dblp.uni-trier.de/pers/hd/s/Schopf:Martin Martin Schopf] ('''2012'''). ''[https://link.springer.com/article/10.1007/s10444-011-9195-2 Nitsche-mortaring for singularly perturbed convection-diffusion problems]''. [https://www.springer.com/journal/10444 Advances in Computational Mathematics], Vol. 36, No. 4
==Chess==
* [[Torsten Linß]] ('''2008'''). ''Databases for Chess Problems''. [[Workshop Chess and Mathematics]]
* [https://www.schachbund.de/problem/problemschachaufgabe-392.html Eckart Kummer] ('''2017''').''[https://www.dieschwalbe.de/schwalbe286.htm#tl50 Torsten Linß 50 & opt int 20]''. [https://en.wikipedia.org/wiki/Die_Schwalbe Die Schwalbe], Heft 286 (German)
=External Links=
* [https://www.fernuni-hagen.de/numerik/team/torsten.linss.shtml Torsten Linß], [https://en.wikipedia.org/wiki/FernUniversit%C3%A4t_Hagen FernUniversität Hagen]
* [https://www.genealogy.math.ndsu.nodak.edu/id.php?id=53247 The Mathematics Genealogy Project - Torsten Linss]
* [http://chesscomposers.blogspot.com/2012/07/july-11th.html Chess Composers - Torsten Linß]
* [http://www.kotesovec.cz/torsten.htm Torsten Linss in Prague] by [[Václav Kotěšovec]], May 24, 2007
* [https://www.wfcc.ch/competitions/composing/wcci5f/ WCCI 2010-2012 Selfmates - WFCC]
* [http://www.problemschach.de/harmonie/ harmonie Homepage]
=References=
<references />
'''[[People|Up one level]]'''
[[Category:Chess Composer|Linß]]
[[Category:Chess Programmer|Linß]]
[[Category:Mathematician|Linß]]
