Changes

a German mathematician and computer scientist, Ph.D. in 1975 from [https://en.wikipedia.org/wiki/Leipzig_University Leipzig University], [https://en.wikipedia.org/wiki/Habilitation Dr.-Ing. habil.] in 1979 from [[Chemnitz University of Technology]], promoting to assistant professor for [https://en.wikipedia.org/wiki/Logic_synthesis logic design], since 1983 full professor for CS at TU Chemnitz, and since 1994 professor of CS at the Department of Mathematics and Computer Science <ref>The Faculty of Science and Agriculture no longer exists, [http://sta.uwi.edu/fsa/dmcs/ Department of Mathematics and Computer Science]</ref>, [https://en.wikipedia.org/wiki/University_of_the_West_Indies University of The West Indies], [https://en.wikipedia.org/wiki/Saint_Augustine,_Trinidad_and_Tobago St. Augustine], [https://en.wikipedia.org/wiki/Trinidad_and_Tobago Trinidad and Tobago] <ref>[https://sta.uwi.edu/fst/dcit/christian.posthoff.asp Christian Posthoff]</ref>. Beside other things, his research interest covers [https://en.wikipedia.org/wiki/Fuzzy_logic Fuzzy Logic] and the [https://en.wikipedia.org/wiki/Boolean_satisfiability_problem satisfiability problem] (SAT), also applied to computer chess. In the 80s, Christian Posthoff was co-author of various computer chess books. In 2012, as now retired professor <ref>[http://www.researchgate.net/profile/Christian_Posthoff/ Christian Posthoff] | [https://en.wikipedia.org/wiki/ResearchGate ResearchGate]</ref>, along with [[Bernd Steinbach]], he solved a [https://en.wikipedia.org/wiki/Four_color_theorem 4-coloring] of 17x17 grids without monochromatic rectangles <ref>[[Bernd Steinbach]], [[Christian Posthoff]] ('''2012'''). ''Extremely Complex 4-Colored Rectangle-Free Grids: Solution of Open Multiple-Valued Problems''. [http://www.informatik.uni-trier.de/~ley/db/conf/ismvl/ismvl2012.html#SteinbachP12 ISMVL 2012]</ref> <ref>[http://blog.computationalcomplexity.org/2009/11/17x17-challenge-worth-28900-this-is-not.html Computational Complexity: The 17x17 challenge. Worth $289.00. This is not a joke] by [http://www.cs.umd.edu/~gasarch/ Bill Gasarch], November 30, 2009</ref> <ref>[http://blog.computationalcomplexity.org/2012/02/17x17-problem-solved-also-18x18.html Computational Complexity: The 17x17 problem SOLVED! (also 18x18)] by [http://www.cs.umd.edu/~gasarch/ Bill Gasarch], February 08, 2012</ref> <ref>[http://mathlesstraveled.com/2012/02/09/17x17-4-coloring-with-no-monochromatic-rectangles/ 17×17 4-coloring with no monochromatic rectangles | The Math Less Traveled], February 09, 2012</ref> <ref>[http://www.spiegel.de/wissenschaft/mensch/loesung-des-vierfarbenraetsels-drei-ecken-duerft-ihr-bilden-a-816497.html Lösung des Vierfarbenrätsels: Drei Ecken dürft ihr bilden] by [http://www.spiegel.de/extra/a-632103.html Holger Dambeck], [https://en.wikipedia.org/wiki/Spiegel_Online Spiegel Online], February 22, 2012 (German)</ref>.

<ref>[http://ilk.uvt.nl/icga/journal/docs/References.pdf [ICGA Journal#RefDB|ICGA Reference Database] (pdf)</ref> <ref>[http://www.informatik.tu-freiberg.de/index.php?option=com_content&task=view&id=35&Itemid=63 Prof. Steinbach Publikationen]</ref> <ref>[http://www.informatik.uni-trier.de/~ley/pers/hd/p/Posthoff:Christian.html DBLPdblp: Christian Posthoff]</ref>

* [[Christian Posthoff]], [[Bernd Steinbach]] ('''1979'''). ''Binäre Gleichungen- Algorithmen und Programme (Logic Equations - Algorithms and Programs)'' Wissenschaftliche Schriftenreihe der [[Chemnitz University of Technology|TH [https://en.wikipedia.org/wiki/Chemnitz Karl-Marx-Stadt]], Heft 1/1979.* [[Christian Posthoff]], [[Bernd Steinbach]] ('''1979'''). ''Binäre dynamische Systeme - Algorithmen und Programme (Binary Dynamic Systems - Algorithms and Programs)'' Wissenschaftliche Schriftenreihe der [[Chemnitz University of Technology|TH [https://en.wikipedia.org/wiki/Chemnitz Karl-Marx-Stadt]], Heft 8/1979.

* [[Christian Posthoff]], [[Günter Reinemann]] ('''1987'''). ''Computerschach - Schachcomputer''. in cooperation with cooperation of [https://en.wikipedia.org/wiki/Rainer_Knaak Rainer Knaak], [[Michael Schlosser]], [[Rainer Staudte]], [[Rüdiger Worbs]], [https://de.wikipedia.org/wiki/Akademie-Verlag Akademie-VerlagBerlin] Berlin, [http://www.booklooker.de/B%C3%BCcher/Christian-Posthoff+Computerschach-Schachcomputer/id/A01gtDDV01ZZ6 booklooker] <ref>[[Dap Hartmann]] ('''1988'''). ''Christian Posthoff and Günter Reinemann: Computerschach - Schachcomputer''. [[ICGA Journal#11_1|ICCA Journal, Vol. 11, No. 1]] (Review)</ref> <ref>[[Ingo Althöfer]] ('''2020'''). ''Computer Chess and Chess Computers in East Germany''. [[ICGA Journal#42_23|ICGA Journal, Vol. 42, Nos. 2-3]]</ref>

* [[Christian Posthoff]], [[Rainer Staudte]] ('''1990'''). ''Suchverfahren in [[Prolog]]'' (Teile 1 und 2). [[Computerschach und Spiele]], No. 4, pp. 28-32; No. 5, pp. 32-34. (German)

* [[Christian Posthoff]], [[Michael Schlosser]], [[Jens Zeidler]] ('''1993'''). ''Search vs. Knowledge? - Search and Knowledge!'' In: Proc. 3rd KADS Meeting, Munich, March 8-9 1993, Siemens AG, Corporate Research and Development, 305-326, 1993.

* [[Christian Posthoff]], D. Rätz, [[Michael Schlosser]] ('''1994'''). ''Fuzzy and Machine Learning Methods'' in Innovative Design Proceedings 2nd World Congress on Expert Systems, Lissabon, 10.-14. Januar, 1994, S. 273-277.

* [[Andreas Junghanns]], [[Christian Posthoff]], [[Michael Schlosser]] ('''1995'''). ''Search with Fuzzy Numbers.'' In: Proc. of the FUZZ-IEEE/IFES'95, Yokohama/Japan, 20.-24. März 1995, Vol. II, 979-986.* [[Christian Posthoff]], [[Günter Reinemann]], [https://en.wikipedia.org/wiki/Rainer_Knaak Rainer Knaak], [[Michael Schlosser]], [[Rainer Staudte]] ('''1999'''). ''Computerschach, Schachcomputer''. [httphttps://de.wikipedia.org/wiki/Verlag_Harri_Deutsch Harri Deutsch], ISBN-13: 978-3817110377, [http://www.amazon.de/Computerschach-Schachcomputer-Christian-Posthoff/dp/3817110375 Amazon.de], [http://www.buchpreis24.de/isbn/9783817110377 buchpreis24.de]