Jolanda Modic: Evklidsko razdaljne matrike
Sreda 22. 2. 2012 od 10h do 11h, soba 3.06 na Jadranski 21
Numerical analysis seminar
20. 2. 2012
Damir Franetič, TBA
Ponedeljek 20.2. 2012, od 12h do 14h, soba 3.06, Jadranska 21
Topology seminar
17. 2. 2012
Gašper Zadnik: Ulamov problem in de Rhamova dekompozicija
Ponedeljek 20.2.2012 ob 10.15, soba 3.06 na Jadranski 21
Geometry seminar
16. 2. 2012
Egmont Porten: Holomorphic extension from CR manifolds and hypoellipticity
Torek, 21.02.2012 ob 12:30, soba 3.06 na Jadranski 21
Complex analysis seminar
15. 2. 2012
Milan Hladnik: Prvi mednarodni matematični kongresi, 4. del: Kongresi okrog prve svetovne vojne
Torek, 21. 2. 2012, od 16h do 18h, Plemljev seminar, Jadranska 19
Seminar for history of mathematical sciences
15. 2. 2012
prof. Cornelia Schiebold: An operator theoretic approach to soliton equations and noncommutative integrable systems.
prof. Cornelia Schiebold,
Mid Sweden University, Sundsvall, Sweden
Predavanje bo v torek 21.2.2012, ob 16:15 v predavalnici 3.07 na Jadranski 21. Petnajst minut pred predavanjem vabljeni na klepet ob čaju. Več informacij na domači strani seminarja:
http://www.fmf.uni-lj.si/mafisem
Mathematical physics seminar
14. 2. 2012
Zorana Grbac: Interest rate derivative valuation after the credit crisis
Četrtek, 1. marec 2012, ob 14.30 v predavalnici 3.05 na Jadranski 21 v Ljubljani
Seminar for probability, statistics, and financial mathematics
13. 2. 2012
Prof. dr. Marta Sanz-Solé: Deterministic sets visited by random trajectories
Četrtek, 16. 2. 2012, ob 18h v predavalnici 2.02 na Jadranski 21.
Mathematics colloquium
12. 2. 2012
Thomas Schlumprecht: Shift invariant preduals of $\ell_1(\Z)$
The Banach space $\ell_1(\Z)$ admits many non-isomorphic preduals, for example, $C(K)$ for any compact countable space $K$, along with many more exotic Banach spaces.
In this paper, we impose an extra condition: the predual must make the bilateral shift on $\ell_1(\Z)$ weak$^*$-continuous. This is equivalent to making the natural convolution multiplication on $\ell_1(\Z)$ separately weak$*$-continuous and so turning $\ell_1(\Z)$ into a dual Banach algebra. We call such preduals \emph{shift-invariant}.
It is known that the only shift-invariant predual arising from the standard duality between $C_0(K)$ (for countable locally compact $K$) and $\ell_1(\Z)$ is $c_0(\Z)$.
We provide an explicit construction of an uncountable family of distinct preduals which do make the bilateral shift weak$^*$-continuous. Using Szlenk index arguments, we show that merely as Banach spaces, these are all isomorphic to $c_0$.
We then build some theory to study such preduals, showing that they arise from certain semigroup compactifications of $\Z$. This allows us to produce a large number of other examples, including non-isometric preduals, and preduals which are not Banach space isomorphic to $c_0$.
Functional analysis and algebra seminar
20. 1. 2012
Primož Moravec: Tenzorski kvadrat proste nilpotentne grupe
Algebra seminar
17. 1. 2012
Rok Erman: Some coloring problems of planar graphs
Četrtek 19. 1. 2012 ob 12:15 v predavalnici 3.05 na Jadranski 21
Graph theory and algorithms seminar
17. 1. 2012
Mirko Dobovišek: Preslikave, ki ohranjajo trojni Jordanov produkt
Četrtek, 19. 1. 2012, ob 12:30, v predavalnici 3.06 na Jadranski 21.
Operator theory seminar
16. 1. 2012
Andrej Bauer in Matija Pretnar: Eff 3.0
Torek, 16. 1. 2012, od 12h do 14h, Plemljev seminar, Jadranska 19
Mathematics and theoretical computing seminar
16. 1. 2012
Nina Ružić: Osnove teorije kopul
Četrtek, 19. januar 2012, ob 14.30 v predavalnici 3.05 na Jadranski 21 v Ljubljani
Seminar for probability, statistics, and financial mathematics
16. 1. 2012
Bojan Magajna: Spektri elementarnih operatorjev
Functional analysis and algebra seminar
16. 1. 2012
Emil Žagar: Lagrangeeva geometrijska interpolacija z racionalnimi prostorskimi kubičnimi Bezierovimi krivuljami (2. del)
Sreda 18. 1. 2012 od 10h do 11h, soba 3.06 na Jadranski 21
Numerical analysis seminar
15. 1. 2012
Christine Laurent-Thiébaut: On stability of embeddability of compact CR manifolds
Complex analysis seminar
12. 1. 2012
Tina Novak: Hamiltonski sistemi na simetričnih prostorih: simetrični prostori in kompleksifikacija 4. del
Ponedeljek 16.1.2012 ob 11.00, soba 3.06 na Jadranski 21
Geometry seminar
12. 1. 2012
Milan Hladnik: Prvi mednarodni matematični kongresi, 3. del: Kongresi v Heidelbergu, Rimu in Cambridgeu
Torek, 17. 1. 2012, od 16h do 18h, Plemljev seminar, Jadranska 19
Seminar for history of mathematical sciences
12. 1. 2012
József Gáll: Model selection in a family of forward interest rate models
Četrtek, 12. januar 2012, ob 14.30 v predavalnici 3.05 na Jadranski 21 v Ljubljani
Seminar for probability, statistics, and financial mathematics
11. 1. 2012
