Seifert surfaces in open books, and a new coding algorithm for links
نویسندگان
چکیده
منابع مشابه
a new algorithm and software of individual life insurance and annuity computation
چکیده ندارد.
15 صفحه اولpassivity in waiting for godot and endgame: a psychoanalytic reading
this study intends to investigate samuel beckett’s waiting for godot and endgame under the lacanian psychoanalysis. it begins by explaining the most important concepts of lacanian psychoanalysis. the beckettian characters are studied regarding their state of unconscious, and not the state of consciousness as is common in most beckett studies. according to lacan, language plays the sole role in ...
Open Books and Configurations of Symplectic Surfaces
We study neighborhoods of configurations of symplectic surfaces in symplectic 4–manifolds. We show that suitably “positive” configurations have neighborhoods with concave boundaries and we explicitly describe open book decompositions of the boundaries supporting the associated negative contact structures. This is used to prove symplectic nonfillability for certain contact 3–manifolds and thus n...
متن کاملA Characterization of Quasipositive Seifert Surfaces (constructions of Quasipositive Knots and Links, Iii) Lee Rudolph
Here, a surface is smooth, compact, oriented, and has no component with empty boundary. A Seifert surface is a surface embedded in S3. A subsurface S of a surface T is full if each simple closed curve on S that bounds a disk on T already bounds a disk on S. The definition of quasipositivity is recalled in §1, after a review of braided surfaces. The “only if” statement of the Characterization Th...
متن کاملUnknotting Tunnels and Seifert Surfaces
Let K be a knot with an unknotting tunnel γ and suppose that K is not a 2-bridge knot. There is an invariant ρ = p/q ∈ Q/2Z, p odd, defined for the pair (K, γ). The invariant ρ has interesting geometric properties: It is often straightforward to calculate; e. g. for K a torus knot and γ an annulus-spanning arc, ρ(K, γ) = 1. Although ρ is defined abstractly, it is naturally revealed when K ∪ γ i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Bulletin of the London Mathematical Society
سال: 2008
ISSN: 0024-6093
DOI: 10.1112/blms/bdn020