8 citations · 16 across the 4 of their papers we have counts for
4 papers
A Generalization of Wantzel's Theorem, m-sectable angles, and the density of certain Chebyshev-polynomial images
Peter J. Kahn
The eponymous theorem of P.L. Wantzel presents a necessary and sufficient criterion for angle trisectability in terms of the third Chebyshev polynomial , thus making it easy t…
The Density of the Set of Trisectable Angles
Peter J. Kahn
It has been known for almost 200 years that some angles cannot be trisected by straightedge and compass alone. This paper studies the set of such angles as well as its complement $…
Symplectic torus bundles and group extensions
Peter J. Kahn
Symplectic torus bundles are classified by the second cohomology group of with local coefficients . For a compact, orientable surface, the…
Pseudohomology and homology
Peter J. Kahn
The notion of a pseudocycle is introduced by McDuff and Salamon (J-holomorphic curves and quantum cohomology, University Lecture Series, Vol. 6, AMS (1994)) to provide a framework…