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2019

2019

For a graph $G$, the $t$-th power $G^t$ is the graph on $V(G)$ such that two vertices are adjacent if and only if they have…

2018

2018

Fleischner's theorem says that the square of every 2-connected graph contains a Hamiltonian cycle. We present a proof resulting…

2005

2005

Difficulties with college algebra can be the gatekeeper for earning a degree. Students struggle with algebra for many reasons…

Highly Cited

2003

Highly Cited

2003

The complexity of the field of mathematics makes the study of any associated learning disability daunting. In theory, a…

1943

1943

ConclusionsA psychosomatic study ofmaladie des tics, or Gilles de la Tourette's disease is presented, with a detailed analysis of…

1935

1935

Kranken hingewiesen zu haben. WESTPHAL und KATSCH bes t~t igten diese Beobachtung , und YON BERGMANN pr~tzisierte sie. Viele…