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Topic: Christos Papakyriakopoulos

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	Loop theorem - Wikipedia, the free encyclopedia
		In the topology of 3-manifolds, the loop theorem is a generalization of Dehn's lemma.
		The loop theorem was first proven by Christos Papakyriakopoulos in 1956, along with Dehn's lemma and the sphere theorem.
		The same tower construction was used by Papakyriakopoulos to prove the sphere theorem, which states that a nontrivial map of a sphere into a 3-manifold implies the existence of a nontrivial embedding of a sphere.
	en.wikipedia.org /wiki/Loop_theorem (277 words)

	Top Literature - Christos Papakyriakopoulos
		Christos Dimitriou Papakyriakopoulos (Χρίστος Δημητρίου Παπακυριακόπουλος in Greek; 1914-June 29, 1976) was a Greek mathematician, specializing in geometric topology, commonly known as "Papa".
		He worked in isolation from most of the mathematical community until 1948, when he was invited by Ralph Fox to come as his guest at the Princeton mathematics department.
		Papakyriakopoulos is best known for his proofs of Dehn's lemma, the loop theorem, and the sphere theorem, three foundational results for the study of 3-manifolds.
	encyclopedia.topliterature.com /?title=Christos_Papakyriakopoulos (249 words)

	Christos Papakyriakopoulos
		CHRISTOS PAPAKYRIAKOPOYLOS was born in ATHENS(-XALANDRI) in 1914.
		Papakyriakopoulos was always recognizing the importance of this encouragement and subsequent support that he received from R. Fox.
		Papakyriakopoulos C.D.: On Dehn's lemma and the asphericity of knots.
	www.mlahanas.de /Greeks/new/Papakyriakopoulos.htm (2773 words)

	Max Dehn - Wikipedia, the free encyclopedia
		He also stated Dehn's lemma, but an error was found in his proof by Hellmuth Kneser in 1929.
		The result was proved in 1957 by Christos Papakyriakopoulos.
		The word problem for groups, also called the Dehn problem, was posed by him in 1911.
	en.wikipedia.org /wiki/Max_Dehn (440 words)

	Christos Papadimitriou -- Recommendations and Resources (Site not responding. Last check: 2007-10-31)
		Yes, Christo and his wife Jeanne-Claude were born on the same day in the same year, but given my problems on Charles Darwin, I'll leave the pleasure of inserting this to someone else.
		According to ''To Vima'', a respected Greek daily newspaper, Tsekos had proposed a secret programme to the Greek government in 1997, which was projected at a cost of 6 million Euros and was to provide 150 Greek athletes with non-detectable doping substances in preparation for the 2004 Olympic Games.
		Christos Antoniou Sartzetakis (born 6 April, 1929 - Thessaloniki) is a Greek jurist and an elder statesman.
	www.becomingapediatrician.com /health/31/christos-papadimitriou.html (1588 words)

	SIAM News
		You will also find buckets of information on the many labors toward a proof of the conjecture, achievements for which it can be said "Closer, and closer, but still no cigar."
		Doxiadis's fiction is partly "faction." I've heard that the character of Petros was inspired by the Princeton career of Christos Papakyriakopoulos, who got hung up on the Poincaré conjecture.
		Doxiadis weaves many historic figures into his plot, portraying both their mathematical personas and their psychosocial abnormalities.
	www.siam.org /siamnews/04-00/all.htm (1388 words)

	John R. Stallings's Home Page (Site not responding. Last check: 2007-10-31)
		.pdf version of a paper in book to be published by NTUA, Athens, in honor of Papakyriakopoulos
		Left to right are Hale Trotter, Chih-Han Sah, Lee Neuwirth, Ralph Fox, Christos Papakyriakopoulos, John Stallings.
		Paper written in 1974, TeXed in 2002, on "An Extension Theorem for Euler characteristics of groups".
	math.berkeley.edu /~stall (267 words)

	Optical Networking Group - Publications (Site not responding. Last check: 2007-10-31)
		Novel near maximal likelihood soft decision decoding algorithm for linear block codes
		Papakyriakopoulos T, Stavdas, Protonotarios E.N, Avramopoulos H: “10 X 10 GHz Multi - Wavelength, Mode - Locked Fiber Ring Laser using a Semiconductor Optical Amplifier”, Electronics Letters, Vol.
		Papakyriakopoulos T, Stavdas, Protonotarios E, Avramopoulos H, “10 X 10 GHz Multi - Wavelength, Mode - Locked Fiber Ring Laser using a Semiconductor Optical Amplifier”, CLEO 99, paper CThA6, pp.351-352, 1999
	www.telecom.ece.ntua.gr /ong/publications/publications.html (3083 words)

	SENSE publication list (Site not responding. Last check: 2007-10-31)
		Handling and reporting security advisories: A scorecard approach.
		Christos D. Tarantilis, Diomidis Spinellis, and Michel Gendreau.
		Julia Livaditi, Konstantina Vassilopoulou, Christos Lougos, and Konstantinos Chorianopoulos.
	istlab.dmst.aueb.gr /eltrun/publications/g_sense-publications.html (1819 words)

	Interactive Television Papers (UITV.INFO)
		Julia Livaditi and Konstantina Vassilopoulou and Christos Lougos and Konstantinos Chorianopoulos (2003).
		Pramataris and D. Papakyriakopoulos and G. Lekakos and N. Mylonopoulos (2001).
		Personalised Interactive TV Advertising: The iMEDIA Business Model.
	uitv.info /papers (3206 words)

	INTERNATIONAL CONFERENCE-Mathematical Analysis and its Applications-August 24-27, 2000- Mathematics Department-National ...
		S. Papastavridis "The life and work of Christos Papakyriakopoulos"
		Stallings "The power of the Works of C. Papakyriakopoulos in Three-Manifolds" (Main Talk)
		D. Christodoulou "The Initial Value Problem in General Relativity" (Main Talk)
	www.math.ntua.gr /applied/program.html (579 words)

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