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Topic: Dehn surgery

	VBG
		Surgery invented by Dr. Edward Mason when he felt long term vitamin deficiencies from gastric bypass made the procedure not appropriate for most patients.
		Although long term patients seem somewhat uncomfortable (and many I've met have regained most of their weight), normal digestion is retained possibly making the surgery safer in the long term.
		Note: this surgery has been widely replaced by the adjustable lap band.
	gastricbypass.netfirms.com /vbg.htm (104 words)

	Angioma Alliance
		It was not known that she had the condition, and by the time Julia was taken to the operating room she was near death.
		In 1992, her daughter was diagnosed with multiple cavernous angiomas--the largest and most threatening being in the pons of the brainstem.
		She had surgery to remove her CA on 6/11/02, just 6 weeks before her wedding.
	www.angiomaalliance.org /directors.html (703 words)

	Mark Brittenham: papers and preprints
		(with Y.-Q. Wu) The classification of Dehn surgery on 2-bridge knots, to appear in Communications in analysis and Geometry.
		This leads to a complete classification of surgeries on 2-bridge knots, according to whether the resulting manifold is finite pi_1, reducible, toroidal, seifert-fibered, or hyperbolic.
		In this paper we show that an example of an essential lamination in the complement of the Stevedore's knot 6_1, due to Ulrich Oertel, can be associated to a certain tangle T_0, in a very strong way; the lamination remains essential in the complement of any knot K obtained by tangle sum with T_0.
	www.math.unl.edu /~mbritten/personal/pprdescr.html (2020 words)

	Clay Mathematics Institute
		The topics I hope to cover include: surgery long exact sequences, absolute gradings, invariants for knots, and the invariants for contact structures.
		A particular focus will be the Dehn surgeries on hyperbolic knots in the 3-sphere that give non-hyperbolic 3-manifolds.
		To do this, we will study the calculation of the Seiberg-Witten invariant of the result of knot surgery and its relation to the Alexander polynomial from several different points of view: 4-dimensional S-W theory, a 3-dimensional approach related to S^1-valued Morse theory, and via Taubes' SW = Gromov theorem.
	www.claymath.org /programs/summer_school/2004/abstracts (387 words)

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