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- Department of Mathematics and Computer Science

is the causal boundary of spacetime Haussdorf II Steve Harris SLU When is the causal boundary of spacetime Haussdorf III Steve Harris SLU Deformations of Hyperbolic Manifolds Anneke Bart SLU The classification of isometry groups of a Seifert fibered space N which is double covered by a lens space L Ryo Ohashi SLU The classification of isometry groups of a Seifert fibered space N which is double covered by a lens space L Ryo Ohashi SLU A classification of isometry groups of a Seifert fibered space N which is double covered by a lens space L Ryo Ohashi SLU Massey higher order linkings I Michael Tsau SLU Massey higher order linkings II Michael Tsau SLU Massey higher order linkings III Michael Tsau SLU Foliation Cones I John Cantwell SLU Foliation Cones II John Cantwell SLU Ricci Flow and Perelman s work on Thurston s Geometrization Conjecture Ian Agol UIC The deformation theory of the Bianchi groups Anneke Bart SLU On the geometry of gravitational waves José L Flores Universidad de Granada Hopf tori in elliptic 3 manifolds Andy Miller University of Oklahoma Three topologies for boundaries of spacetimes I Steve Harris SLU Three topologies for boundaries of spacetimes II Steve

Original URL path: http://mathcs.slu.edu/search?Subject%3Alist=Topology%20Seminar (2016-02-12)

Open archived version from archive - Exotic Spheres 05 — Department of Mathematics and Computer Science

and we will send an email that contains a link to this page Address info Send to Required The e mail address to send this link to From Required Your email address Comment A comment about this link Subscribe to Talklist Sign up here for a weekly email of upcoming department events Email address Your name February 2016 February Su Mo Tu We Th Fr Sa 1 2 3 4

Original URL path: http://mathcs.slu.edu/seminars/topology-seminar/exotic-spheres-05/sendto_form (2016-02-12)

Open archived version from archive - Exotic Spheres 05 — Department of Mathematics and Computer Science

AM to 12 00 PM Where 202 Ritter Hall Contact Name Dr Khan Attendees rotating presentations by Chirasree Chatterjee Sean Corrigan Gerrit Smith Add event to calendar vCal iCal The primary source is the seminal 1963 differential topology article Groups of homotopy spheres by Michel Kervaire and John Milnor Sean will present Section 4 The goal is to prove Theorem 4 1 For any fixed n 4 there are only finitely many equivalence classes of homotopy n spheres where the equivalence relation is diffeomorphism up to connected sum with those special ones that bound a parallelizable n 1 manifold The seminar s goal is to show a version of Theorem 1 2 For any fixed n 4 there are only finitely many diffeomorphism classes of homotopy n spheres That is by the generalized Poincaré theorem there are only finitely many smooth structures on the standard n sphere Thus Theorem 4 1 reduces us to show that there are only finitely many possibilities for the special ones For continuity here s a link to the previous talk Document Actions iCalendar vCalendar Send this Print this Subscribe to Talklist Sign up here for a weekly email of upcoming department events Email address

Original URL path: http://mathcs.slu.edu/seminars/topology-seminar/exotic-spheres-05?month:int=1&year:int=2016&orig_query= (2016-02-12)

Open archived version from archive - Past Events — Department of Mathematics and Computer Science

02 Kimberly Druschel 314 Ritter Hall from Feb 02 2016 11 00 AM to Feb 02 2016 12 00 PM Topology Seminar Exotic Spheres 02 Open to the public a learning seminar with talks from advanced graduate students 202 Ritter Hall from Jan 28 2016 11 00 AM to Jan 28 2016 12 00 PM Math CS Club Dancing Polyhedra Bryan Clair SLU Ritter Lobby from Jan 27 2016 04 00 PM to Jan 27 2016 05 00 PM Geometry Topology Seminar Orbifolds 01 Kimberly Druschel 314 Ritter Hall from Jan 26 2016 11 00 AM to Jan 26 2016 12 00 PM Topology Seminar Exotic Spheres 01 Open to the public a learning seminar with talks from advanced graduate students 202 Ritter Hall from Jan 21 2016 11 00 AM to Jan 21 2016 12 00 PM Math CS Club Welcome back meet and greet With soda and pizza Ritter Lobby from Jan 20 2016 04 00 PM to Jan 20 2016 05 00 PM Graduate Seminar PhD ε Vignon Oussa Bridgewater State University Ritter Hall 323 from Dec 04 2015 04 10 PM to Dec 04 2015 05 00 PM Math CS Club A Generalization of Mordell to Ternary Quadratic Forms Sarah Blackwell SLU undergrad Ritter Lobby from Dec 02 2015 04 00 PM to Dec 02 2015 05 00 PM Geometry Topology Seminar Replacing the Lower Curvature Bound in Toponogov s Comparison Theorem by a Weaker Condition James Hebda SLU 225 Ritter Hall from Dec 01 2015 02 10 PM to Dec 01 2015 03 00 PM PhD Oral Exam Generalizing the Kneser Conjecture Gerrit Smith SLU 323 Ritter Hall Mac Lab from Nov 23 2015 11 00 AM to Nov 23 2015 12 00 PM PhD Oral Defense Explicit formulas for the exponential map for special

Original URL path: http://mathcs.slu.edu/events/aggregator/previous/ (2016-02-12)

Open archived version from archive - Exotic Spheres 02 — Department of Mathematics and Computer Science

Jan 28 2016 from 11 00 AM to 12 00 PM Where 202 Ritter Hall Contact Name Dr Khan Attendees rotating presentations by Chirasree Chatterjee Sean Corrigan Gerrit Smith Add event to calendar vCal iCal The primary source is the seminal 1963 differential topology article Groups of homotopy spheres by Michel Kervaire and John Milnor Chirasree will do Items 5 6 from Lecture 01 thus completing a modern approach to Sections 1 2 of the paper OUTLINE for Gerrit Smith Definition of an abstract manifold being stably parallelizable the standard n sphere necessarily satisfies this property Why stabilizing once was enough Lemma 3 5 a survey of the machine from algebraic topology called obstruction theory Why the notion in Item 1 is equivalent to parallelizable for manifolds with boundary Lemma 3 4 An equivalent notion for embedded manifolds Lemma 3 3 The three case proof that any homotopy n sphere is stably parallelizable Theorem 3 1 This is independent of Items 2 4 which were merely remarks on Item 1 Document Actions iCalendar vCalendar Send this Print this Subscribe to Talklist Sign up here for a weekly email of upcoming department events Email address Your name February 2016 February Su

Original URL path: http://mathcs.slu.edu/seminars/exotic-spheres-02 (2016-02-12)

Open archived version from archive - Orbifolds 01 — Department of Mathematics and Computer Science

00 PM Where 314 Ritter Hall Contact Name Dr Khan Add event to calendar vCal iCal OUTLINE FOR INTRODUCTORY TALK accessible to all math grad students Group actions on manifolds and their quotient spaces Examples wallpaper symmetries actions on spheres and tori Definition of an effective orbifold and some basic terms Examples especially two dimensional orbifolds Difference between underlying space and orbifold structure Orbifold covering spaces and orbifold fundamental groups Orbifold Euler characteristic Geometric structures on orbifolds STANDING REFERENCES FOR SEMINAR Lectures on Orbifolds and Group Cohomology by Ádem Klaus 2011 Orbifolds and Stringy Topology by Ádem Leida Ruan 2007 Three dimensional Orbifolds and Cone manifolds Chapter 2 by Cooper Hodgson Kerckhoff 2000 Lectures on Orbifolds and Reflection Groups by Davis 2011 Oriented Orbifold Vertex Groups and Cobordism and an Associated Differential Graded Algebra by Druschel 2015 Groupoïdes d Holonomie et Classifiants by Haefliger 1984 On a Generalization of the Notion of Manifold by Satake 1956 The Geometry and Topology of Three manifolds Chapter 13 by Thurston 2002 Document Actions iCalendar vCalendar Send this Print this Subscribe to Talklist Sign up here for a weekly email of upcoming department events Email address Your name February 2016 February Su Mo Tu

Original URL path: http://mathcs.slu.edu/seminars/orbifolds-01 (2016-02-12)

Open archived version from archive - Exotic Spheres 01 — Department of Mathematics and Computer Science

learning seminar with talks from advanced graduate students What Topology Seminar When Thu Jan 21 2016 from 11 00 AM to 12 00 PM Where 202 Ritter Hall Contact Name Dr Khan Attendees rotating presentations by Chirasree Chatterjee Sean Corrigan Gerrit Smith Add event to calendar vCal iCal The primary source is the seminal 1963 differential topology article Groups of homotopy spheres by Michel Kervaire and John Milnor OUTLINE for Chirasree Chatterjee Definition of homotopy n sphere Σ Examples given by clutching diffeomorphisms Alternative definition of the commutative monoid Θ n of homotopy n spheres which is simpler than that given in Sections 1 2 Existence of representation by clutching n 6 relation to the mapping class group of the standard n 1 sphere Show that reversing orientation of Σ represents an inverse in Θ n using clutching The two definitions of the commutative monoids Θ n agree in dimension n 5 using the h cobordism theorem Document Actions iCalendar vCalendar Send this Print this Subscribe to Talklist Sign up here for a weekly email of upcoming department events Email address Your name February 2016 February Su Mo Tu We Th Fr Sa 1 2 3 4 5 6 7

Original URL path: http://mathcs.slu.edu/seminars/exotic-spheres-01 (2016-02-12)

Open archived version from archive - PhD ± ε — Department of Mathematics and Computer Science

calendar vCal iCal Abstract In this presentation I will share my experience as a tenure track Assistant Professor of Mathematics at Bridgewater State University I will also talk about my experience searching for tenure track positions right before the completion of my doctorate studies at Saint Louis University Document Actions iCalendar vCalendar Send this Print this Subscribe to Talklist Sign up here for a weekly email of upcoming department events

Original URL path: http://mathcs.slu.edu/seminars/phd-b1-3b5 (2016-02-12)

Open archived version from archive