32 citations
7 papers
Approximation of smooth functions on compact two-point homogeneous spaces
Gavin Brown, Feng Dai
Estimates of Kolmogorov -widths and linear -widths $\da_n(B_p^r, L^q)$, () of Sobolev's classes , (, ) o…
Homomorphisms and Higher Extensions for Schur algebras and symmetric groups
Anton Cox, Alison Parker
This paper surveys, and in some cases generalises, many of the recent results on homomorphisms and the higher Ext groups for q-Schur algebras and for the Hecke algebra of type A. W…
Bases for certain cohomology representations of the symmetric group
Anthony Henderson
We give a combinatorial description (including explicit differential-form bases) for the cohomology groups of the space of n distinct nonzero complex numbers, with coefficients in…
Random subspaces for encryption based on a private shared Cartesian frame
Stephen D. Bartlett, Patrick Hayden, Robert W. Spekkens
A private shared Cartesian frame is a novel form of private shared correlation that allows for both private classical and quantum communication. Cryptography using a private shared…
A Lie Algebra Method for Rational Parametrization of Severi-Brauer Surfaces
Willem A. de Graaf, Michael Harrison, Jana Pilnikova +1
It is well-known that a Severi-Brauer surface has a rational point if and only if it is isomorphic to the projective plane. Given a Severi-Brauer surface, we study the problem to d…
Entanglement under restricted operations: Analogy to mixed-state entanglement
Stephen D. Bartlett, Andrew C. Doherty, Robert W. Spekkens +1
We show that the classification of bi-partite pure entangled states when local quantum operations are restricted yields a structure that is analogous in many respects to that of mi…