Mustafa Kalafat
Stony
Brook |
May 22 |
Contact Geometry and the Classification of
Legendrian/Transversal Knots (a survey) |
| Ping Zhang |
May 15 |
Some Constructions and Examples in Virtual Knot
Theory |
| Ebru Keyman |
May 1 |
Recognizing S^3 (Rubinstein-Thompson
algorithm) |
| Sadettin Erdem |
Apr 25 |
|
| Turgut Onder |
Apr 17 |
SW-invariants of 4-manifolds with free circle
actions, Part II |
| Ozgur Kisisel |
Apr 10 |
Quantum cohomology |
| Mehmetcik Pamuk |
Apr 3 |
Lusternik-Shnirelman category and Massey
products
(based on papers of Viterbo, et.al.) |
| Muhiddin Uguz |
Mar 27 |
A free Z/p action and the Seiberg-Witten
invariants |
| Mustafa Korkmaz |
Mar 20 |
Recent progress in mapping class
groups |
| Ferihe Atalan (Ozan) |
Mar 13 |
Enumeration of mapping classes for the torus
(based on a paper
of Takasawa) |
| Firat Arikan |
Mar 6 |
A branched cover approach to minimal base genus
problem |
| Sergey Finashin |
Feb 27 |
A calculus of (complex) Spin structures, Part
II |
| Sergey Finashin |
Feb 20 |
A calculus of complex Spin structures and its
application
in 4-dimensional topology |
| Yildiray Ozan |
Feb 13 |
Circle Actions on Manifolds,
Symplectic Manifolds and their Lagrangians |
| Ping Zhang |
Jan 7 |
The fundamental group and Lusternik-Shnirelman Category of
3-manifolds -- Survey and Remark |
| Sergey Finashin |
Dec 24 |
Membranes' minimal genus problem for
surfaces in 4-manifolds |
| Nermin Salepci |
Dec 10 |
Real Algebraic Curves and Quasi-positive Braids
(after S.Orevkov) |
| Ebru Keyman |
Dec 3 |
Ordering the Braid Group |
| Firat Arikan |
Nov 19 |
A topological construction of a surface bundle
with non-zero signature via a method of subtructing Lefschetz
fibrations, Part II
|
| Firat Arikan |
Nov 12 |
A topological construction of a surface bundle
with non-zero signature via a method of subtructing Lefschetz
fibrations |
| Mustafa Korkmaz |
Nov 5 |
Is Poincare Conjecture not true ? |
| Sergey Finashin |
Oct 22 |
Open book decompositions and contact structures on 3-manifolds
as an analog of Lefschetz fibrations and symplectic structures on
4-manifolds |
| Sergey Finashin |
Oct 15 |
A survey of the recent progress in Contact Topology
(from Eliashberg-Hofer to Giroux) |
| Nermin Salepci |
Oct 8 |
Braids corresponding to Real Algebraic Curves
(following the construction of Orevkov) |
| Sergey Finashin |
Oct 1 |
To bury SW-theory in 4-dimensional topology ?
(new horizons after the Ozsvath-Szabo theory) |
| Sergey Finashin |
Sep 24 |
Progress in 4-dimensional topology
(a survey report
after a conference in Oberwolfach in July 2001) |
| Mustafa Korkmaz |
May 7 |
The second homology groups of mapping class groups of orientable surfaces |
| Turgut Onder |
Apr 30 |
Smooth group actions on four-manifolds
A survey of results on smooth group actions on some four manifolds
like projective spaces CP^2 and their connected sums are given. In
this context the results of authors like I. Hambleton-R.Lee,
A.Edmunds-J.Ewing, D.Wilcynski are presented, the techniques with
emphasis
on Equivariant Gauge Theory are outlined. |
| Yildiray Ozan |
Apr 16 |
Real Algebraic Models, Retractions and Massey Products |
| Ebru Keyman |
Apr 9 |
Braided Chord Diagrams |
| Nermin Salepci |
Mar 26 |
Gauss Diagram Algebra for computation of Arnold Invariants
of plane curves |
| Sergey
Finashin |
Mar 19 |
Patchworking in toric varieties and Maslov
dequantization
of positive numbers after Viro (Part II) |
| Yildiray Ozan |
Mar 12 |
Viterbo's work on exact lagrange submanifolds, periodic orbits
and the cohomology of free loop space, Part II |
| Yildiray Ozan |
Feb 26 |
Viterbo's work on exact lagrange submanifolds, periodic orbits
and the cohomology of free loop space |
| Sergey Finashin |
Feb 19 |
Patchworking in toric varieties and Maslov dequantization
of positive numbers after Viro |
| Yildiray Ozan |
Jan 10 |
On (Rational) Homotopy Theory of Real Algebraic Varieties
in their Complexifications
In this talk I'll discuss some observations about the
homomorphism on (rational) homotopy groups induced by the inclusion
map of a real algebraic variety into its complexification. Methods are
standard algebraic topology and rational homotopy theory.
|
| Nermin Salepci |
Dec 19 |
A St-type invariant of immersed plane curves with a marked point |
| Mustafa Korkmaz |
Dec 12 |
Commutators in the mapping class group and bounded cohomology (Part II) |
| Semra Kaptanoglu |
Dec 5 |
Steenrod Algebra Action and Fixed Point Sets |
| Sergey Finashin |
Oct 28 |
Around minimal genus surfaces in 3-manifolds |
| Mustafa Korkmaz |
Oct 21 |
Commutators in the mapping class group and bounded cohomology
We prove that the stable commutator length of a Dehn twist
in the mapping class group is positive. As a result of this,
the natural map from the second bounded cohomology
of the mapping class group to the ordinary cohomology is
not injective and finite index subgroups of mapping class groups
are not uniformly perfect. We also prove that the second bounded
cohomology of the mapping class group of a surface of genus at most
two and of hyperelliptic mapping class groups are infinite dimensional.
These results give answers to some problems in Kirby's problem book
and some problems of Morita. |
| Cem Tezer |
Nov 7 |
Almost inner automorphisms |
| Ferit Ozturk |
Oct 31 |
Thurston-Bennequin-like invariants of real surface singularities |
| Ozgur Kisisel |
Oct 24 |
Toroidal Pipe Diagrams and String Topology
Toroidal Pipe Diagrams are combinatorial objects that appear naturally
in the study of an integrable system; the discrete KP hierarchy.
This talk will discuss a conjectural relation of these to "String
Topology", recently proposed by Chas and Sullivan, extending previous
works of Goldman, Turaev and Wolpert.
|
| Yildiray Ozan |
Oct 16 |
On Algebraic K-Theory of Real Algebraic Varieties
with Circle Action
|
Alex Degtyarev
Bilkent |
Oct 9 |
Some Finiteness Results in Algebraic Geometry |
Vladimir Golubyatnikov
Novosibirsk, Russia |
Oct 4 |
Cohomotopical Properties of the Thom Spaces |
Rostislav Matveyev
Stony
Brook |
Jun 6 |
Convex decomposition of smooth 4-manifolds |
| Semra Kaptanoglu |
May 16 |
Euler Characteristic and Betti numbers of a G-Moore space
Let X be a Moore space with Z2xZ4 action, then the
(co) homology groups of X with mod 2 coefficients is a module over
F2[Z2xZ4]. There is a tight
connection between the multiplicities of modules appearing in the decomposition of M
as an F2[C]-module and the fixed point set Xc where C is
a cyclic subgroup of Z2xZ4.
|
| Mustafa Korkmaz |
May 2 |
On Commutators in Mapping Class Groups |
| Ilker Yuce |
Apr 25 |
Normal all pseudo-Anosov subgroups of mapping
class groups (Part III) |
| Ilker Yuce |
Apr 18 |
Normal all pseudo-Anosov subgroups of mapping
class groups (Part II) |
| Semra Kaptanoglu |
Apr 11 |
On realizable kG-modules |
| Yildiray Ozan |
Apr 4 |
Solvable Regular Coverings of Real Algebraic Varieties |
| Mustafa Korkmaz |
Mar 7 |
Mapping Class groups of non-orientable surfaces |
| Ilker Yuce |
Jan 4 |
Normal all pseudo-Anosov subgroups of mapping
class groups |
Yusuf Ziya
Irvine |
Dec 28 |
Distinguishing knots; dihedral branched covers of 3-sphere |
Alexander Klyachko
Bilkent |
Dec 21 |
Kaehler-Einstein Metric on Toric Fano |
| Mustafa Korkmaz |
Dec 14 |
Non-complex smooth 4-manifolds with genus-g Lefschetz fibrations (Part II) |
| Turgut Onder |
Dec 7 |
Topological G-index computations and some applications
to Seifert homology 3-spheres |
| Sergey Finashin |
Nov 30 |
Spin mapping class group and Lefschetz fibrations |
| Nermin Salepci |
Nov 23 |
Arnold invariants of immersed plane curves
(Part II: Arnold Conjectures, cobordisms, etc.) |
| Yildiray Ozan |
Nov 9 |
On entire rational maps of real algebraic surfaces and realization
of smooth manifolds with prescribed algebraic submanifolds (Part II)
|
| Sergey Finashin |
Nov 2 |
Khovanov's homology of knots a'la Viro
Khovanov's homology is a generalization of the
Jones polinomial of a knot: this polinomial is the Poincare
polinomial of the corresponding chain complex.
Viro clarified the meaning of a (rather obscure) construction
of Khovanov. These results are very recent and
unpublished. |
| Yildiray Ozan |
Oct 26 |
On entire rational maps of real algebraic surfaces and realization
of smooth manifolds with prescribed algebraic submanifolds
Let X be an R-oriented nonsingular compact real algebraic variety and
i : X-->XC a projective nonsingular complexification. It is well-known
that ker i* : H*(X,R)-->H*(XC,R)
and Im(i* : H*(XC,R)-->H*(X,R)) is
independent of XC. We use this invariant to study entire rational maps and also an an
obstruction to algebraic realization of smooth pairs of manifolds by algebraic varieties. |
| Nermin Salepci |
Oct 19 |
Arnold invariants of immersed plane curves
The starting point of the classification of immersed plane curves
was the paper of Arnold in which he gave the definitions of the invariants St and J+, J-.
We discussed some of the properties of the space of immersions using these invariants.
|
| Cem Tezer |
Oct 12 |
Rarity of Moebius transformations
with invariant connections
The purpose of this talk is to show that a linear fractional transformation
(considered as a diffeomorphism of S2) admits an invariant connection
only trivially, that is only if it admits an invariant Riemannian metric.
This demonstrates that, of the group of linear fractional transformations an
open dense subset consists of diffeomorphisms which admit no
invariant connection. |
| Nermin Salepci |
Jun 8 |
Plane curves, their invariants, perestroikas and classifications (after V.I. Arnold) |
| Sergey Finashin |
May 21 |
Branched coverings and quotients as a source of new constructions
in Low-dimensional topology (some old ideas and new projects) |
| Sergey Finashin |
May 14 |
Minimal genus in S1xM3 (after P. Kronheimer) |
| Sergey Finashin |
May 7 |
Invariants of 3-dimensional homology spheres:
from Rokhlin to Froyshov |
| Mustafa Korkmaz |
Apr 30 |
Non-complex smooth 4-manifolds with Lefschetz fibrations |
| Sergey Finashin |
Apr 9 |
Generic immersions of circle to surfaces and
complex topology of real algebraic curves (after V.Arnold and O.Viro) |
| Sergey Finashin |
Mar 19 |
The Rokhlin Conjecture and singular real algebraic surfaces,
with smooth quotients by the complex conjugation |
| Mustafa Korkmaz |
Mar 12 |
Minimal number of singular fibers in a Lefschetz fibration |
Alexander Klyachko
Bilkent |
Mar 5 |
Quantum cohomology, parabolic bundles and unitary operators |
| Selahi Durusoy |
Feb 19 |
Holomorphic functions in neighborhoods of
spheres embedded in CP2 (after S.
Nemirovski) |
| Mustafa Korkmaz |
Dec 28 |
Relations in the Mapping Class Groups |
Burak Ozbagci
Irvine |
Dec 25 |
Continuation to: Signatures of Lefschetz fibrations |
Burak Ozbagci
Irvine |
Dec 21 |
Signatures of Lefschetz fibrations |
| Turgut Onder |
Dec 7 |
Equivariant Cross Sections of Complex Stiefel Manifolds |
Sinan Sertoz
Bilkent |
Nov 30 |
Classification of Algebraic Threefolds; the Mori Program |
| Sergey Finashin |
Nov 23 |
Intersection homologies, Mixed Hodge structures and
Topology of real ICIS (elementary use of non-elementary tools) |
| Hursit Onsiper |
Nov 16 |
On uniformization of complex surfaces |
| Mustafa Korkmaz |
Nov 2 |
Endomorphisms of surface mapping class groups |
Vladimir Golubyatnikov
(Novosibirsk, Russia) |
Oct 26 |
On reconstruction of shapes of smooth surfaces
from the shapes of their apparent contours |
Yuri N. Obukhov
Moscow |
Oct 19 |
On quantum anomalies in Riemann-Cartan
spacetime |
| Muhiddin Uguz |
Oct 12 |
A short proof of a Donaldson theorem with SW-theory
based on the notes of A. Parker |
| Ferit Ozturk |
Oct 5 |
Introduction to the topology of surface singularities
tentatively: analytic and topological invariants of such singularities and
their relationship |