4-Manifolds which embed in IR6 but not in IR5, and Seifert manifolds for fibered knots.
Displaying 21 – 40 of 4977
A 2-category of chronological cobordisms and odd Khovanov homology
Krzysztof K. Putyra (2014)
Banach Center Publications
We create a framework for odd Khovanov homology in the spirit of Bar-Natan's construction for the ordinary Khovanov homology. Namely, we express the cube of resolutions of a link diagram as a diagram in a certain 2-category of chronological cobordisms and show that it is 2-commutative: the composition of 2-morphisms along any 3-dimensional subcube is trivial. This allows us to create a chain complex whose homotopy type modulo certain relations is a link invariant. Both the original and the odd Khovanov...
A 2-complex is collapsible if and only if it admits a strongly convex metric
Warren White (1970)
Fundamenta Mathematicae
A better proof of the Goldman-Parker conjecture.
Schwartz, Richard Evan (2005)
Geometry & Topology
A Bound for the Fixed-Point Index of an Area-Preserving Map with Applications to Mechanics.
Carl P. Simon (1974)
Inventiones mathematicae
A Bound on the Order of Jumping Lines.
Mei-Chu Chang (1983)
Mathematische Annalen
A boundary set for the Hilbert cube containing no arcs
Jan van Mill (1983)
Fundamenta Mathematicae
A branch set linking theorem.
William L. Reddy, David L. George (1975)
Mathematica Scandinavica
A calculation of Pin+ Bordism groups.
L.R. Taylor, R.C. Kirby (1990)
Commentarii mathematici Helvetici
A Calculus for Framed Links in S3.
Robion Kirby (1978)
Inventiones mathematicae
A Canonical Form for Compact Nonpositively Curved Manifolds Whose Fundamental Groups Have Nontrivial Center.
Patrick Eberlein (1982)
Mathematische Annalen
A categorification for the chromatic polynomial.
Helme-Guizon, Laure, Rong, Yongwu (2005)
Algebraic & Geometric Topology
A Chain Level Transfer Homomorphism.
Hans J. Munkholm (1979)
Mathematische Zeitschrift
A character on the quasi-symmetric functions coming from multiple zeta values.
Hoffman, Michael E. (2008)
The Electronic Journal of Combinatorics [electronic only]
A characterization of 2-knots groups.
Francisco González-Acuña (1994)
Revista Matemática Iberoamericana
A n-knot group is the fundamental group of the complement of an n-sphere smoothly embedded in Sn+2. Artin gave in 1925 ([A]) an algebraic characterization of 1-knot groups. M. Kervaire gave in 1965 ([K]) an algebraic characterization of n-knot groups for n ≥ 3. The problem of characterizing algebraically 2-knot groups has been posed several times (see for example [Su, Problem 4.7]). Ribbon 2-knot groups have been characterized algebraically by Yajima [Y].We will give here a characterization of 2-knot...
A characterization of a class of semigroups.
F. Knowles (1974)
Semigroup forum
A characterization of certain branched coverings as group actions
Eric Robinson (1979)
Fundamenta Mathematicae
A characterization of cubes and spheres [Book]
A. Szymański, M. Turzański (1974)
A characterization of differentiable submanifolds of Euclidean spaces
B. Hajduk (1973)
Colloquium Mathematicae
A characterization of movable compacta.
Friedrich W. Bauer (1977)
Journal für die reine und angewandte Mathematik