Christensen, Ole Goh, Say Song

We consider a class of functions, defined on a locally compact abelian group by letting a class of modulation operators act on a countable collection of functions. We derive sufficient conditions for such a class of functions to form a Bessel sequence or a frame and for two such systems to be dual frames. Explicit constructions are obtained via var...

Christensen, Ole Goh, Say Song

We consider a class of functions, defined on a locally compact abelian group by letting a class of modulation operators act on a countable collection of functions. We derive sufficient conditions for such a class of functions to form a Bessel sequence or a frame and for two such systems to be dual frames. Explicit constructions are obtained via var...

Christensen, Ole Goh, Say Song

We consider a class of functions, defined on a locally compact abelian group by letting a class of modulation operators act on a countable collection of functions. We derive sufficient conditions for such a class of functions to form a Bessel sequence or a frame and for two such systems to be dual frames. Explicit constructions are obtained via var...

Alahmadi, Adel Aldred, Robert E. L. Alkenani, Ahmad Hijazi, Rola Solé, P. Thomassen, Carsten

In 1993 Ruskey and Savage conjectured that in the d-dimensional hypercube, every matching M can be extended to a Hamiltonian cycle. Fink verified this for every perfect matchingM, remarkably even ifM contains external edges. We prove that this property also holds for sparse spanning regular subgraphs of the cubes: for every d ≥ 7 and every k, where...

Van Houtte, Mieke Stevens, Peter

It has been established since the 1960s that tracking yields negative consequences for students in lower tracks. As this research has been carried out mainly in the USA and UK, the effects of tracking have been demonstrated in systems of within-school tracking mostly. However, in many European countriessuch as Belgium (Flanders)tracking is commonly...

Christensen, Ole Goh, Say Song

We consider a class of functions, defined on a locally compact abelian group by letting a class of modulation operators act on a countable collection of functions. We derive sufficient conditions for such a class of functions to form a Bessel sequence or a frame and for two such systems to be dual frames. Explicit constructions are obtained via var...

Alahmadi, Adel Aldred, Robert E. L. Alkenani, Ahmad Hijazi, Rola Solé, P. Thomassen, Carsten

In 1993 Ruskey and Savage conjectured that in the d-dimensional hypercube, every matching M can be extended to a Hamiltonian cycle. Fink verified this for every perfect matchingM, remarkably even ifM contains external edges. We prove that this property also holds for sparse spanning regular subgraphs of the cubes: for every d ≥ 7 and every k, where...

Alahmadi, Adel Aldred, Robert E. L. Alkenani, Ahmad Hijazi, Rola Solé, P. Thomassen, Carsten

In 1993 Ruskey and Savage conjectured that in the d-dimensional hypercube, every matching M can be extended to a Hamiltonian cycle. Fink verified this for every perfect matchingM, remarkably even ifM contains external edges. We prove that this property also holds for sparse spanning regular subgraphs of the cubes: for every d ≥ 7 and every k, where...

Alahmadi, Adel Aldred, Robert E. L. Alkenani, Ahmad Hijazi, Rola Solé, P. Thomassen, Carsten

In 1993 Ruskey and Savage conjectured that in the d-dimensional hypercube, every matching M can be extended to a Hamiltonian cycle. Fink verified this for every perfect matchingM, remarkably even ifM contains external edges. We prove that this property also holds for sparse spanning regular subgraphs of the cubes: for every d ≥ 7 and every k, where...

Alahmadi, Adel Aldred, Robert E. L. Alkenani, Ahmad Hijazi, Rola Solé, P. Thomassen, Carsten

In 1993 Ruskey and Savage conjectured that in the d-dimensional hypercube, every matching M can be extended to a Hamiltonian cycle. Fink verified this for every perfect matchingM, remarkably even ifM contains external edges. We prove that this property also holds for sparse spanning regular subgraphs of the cubes: for every d ≥ 7 and every k, where...