Results 81 to 90 of about 77,930 (235)

Coxeter's enumeration of Coxeter groups

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 1, January 2026.
Abstract In a short paper that appeared in the Journal of the London Mathematical Society in 1934, H. S. M. Coxeter completed the classification of finite Coxeter groups. In this survey, we describe what Coxeter did in this paper and examine an assortment of topics that illustrate the broad and enduring influence of Coxeter's paper on developments in ...
Bernhard Mühlherr, Richard M. Weiss
wiley   +1 more source

The Expected Codimension of a Matroid Variety [PDF]

open access: yes, 2013
Matroid varieties are the closures in the Grassmannian of sets of points defined by specifying which Pl\"ucker coordinates vanish and which don't. In general these varieties are very ill-behaved, but in many cases one can estimate their codimension by ...
Ford, Nicolas
core  

Theta divisors and permutohedra

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 1, January 2026.
Abstract We establish an intriguing relation of the smooth theta divisor Θn$\Theta ^n$ with permutohedron Πn$\Pi ^n$ and the corresponding toric variety XΠn$X_\Pi ^n$. In particular, we show that the generalised Todd genus of the theta divisor Θn$\Theta ^n$ coincides with h$h$‐polynomial of permutohedron Πn$\Pi ^n$ and thus is different from the same ...
V. M. Buchstaber, A. P. Veselov
wiley   +1 more source

Recent Developments in the Dynamic Stability of Elastic Structures

open access: yesFrontiers in Applied Mathematics and Statistics, 2019
Dynamic instability in the mechanics of elastic structures is a fascinating topic, with many issues still unsettled. Accordingly, there is a wealth of literature examining the problems from different perspectives (analytical, numerical, experimental etc.)
Ida Mascolo
doaj   +1 more source

Topological representation of matroids from diagrams of spaces [PDF]

open access: yes, 2010
Swartz proved that any matroid can be realized as the intersection lattice of an arrangement of codimension one homotopy spheres on a sphere. This was an unexpected extension from the oriented matroid case, but unfortunately the construction is not ...
Engstrom, Alexander
core  

Codimension-two bifurcation analysis at an endemic equilibrium state of a discrete epidemic model

open access: yesAIMS Mathematics
In this paper, we examined the codimension-two bifurcation analysis of a two-dimensional discrete epidemic model. More precisely, we examined the codimension-two bifurcation analysis at an endemic equilibrium state associated with $ 1:2 $, $ 1:3 $ and ...
Abdul Qadeer Khan   +3 more
doaj   +1 more source

Noninvertible Knots of Codimension 2 [PDF]

open access: yesProceedings of the American Mathematical Society, 1973
A proof of the noninvertibility of the pretzel knot ( 25 , − 3 , 13 ) (25, - 3,13) is given which applies to the knots obtained by repeatedly spinning the pretzel knot.
openaire   +2 more sources

Complexity equals anything for multi-horizon black holes

open access: yesJournal of High Energy Physics
We investigate the “complexity equals anything” proposal with codimension-one and codimension-zero gravitational observables for multi-horizon black holes, using the Bardeen-AdS class black hole as an example.
Hong-Yue Jiang, Yu-Xiao Liu
doaj   +1 more source

Proximinal subspaces of A(K) of finite codimension

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
We study an analogue of Garkavi's result on proximinal subspaces of C(X) of finite codimension in the context of the space A(K) of affine continuous functions on a compact convex set K.
T. S. S. R. K. Rao
doaj   +1 more source

Codimension-p Paley–Wiener theorems

open access: yesArkiv för Matematik, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yang, Yan, Qian, Tao, Sommen, Frank
openaire   +3 more sources

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