On a conjecture of Lapidus and van Frankenhuysen

In this paper it is shown that a conjecture of Lapidus and van Frankenhuysen of 2003 on the existence of a vertical line such that the density of the complex dimensions of nonlattice fractal strings with M scaling ratios off this line vanishes in the limit as M→∞, fails on the class of nonlattice self-similar fractal strings.

¿Por qué los eritreos van a Europa?

¿Por qué los eritreos arriesgan su vida en peligrosos viajes a Europa? ¿Por qué no se quedan en los países vecinos donde podrían encontrar seguridad y protección?

Catalogus systematicus coleopterorum. Catalogue systematique des coléoptères. Systematische naamlijst van dat geslacht van insecten dat men torren noemt.

1-2 (in one volume)

The condition of women workers under the present industrial system: an address by Ida M. Van Etten at the National Convention of the American Federation of Labor held at Detroit, Michigan, December 8th, 1890

At head of title: Publication of the American Federation of Labor.

Two races of the bridled titmouse [by] A. J. Van Rossem.

v.31:no.10(1947)

House plants / by Robert Van Tress.

no.20(1937)

The select works of Antony van Leeuwenhoek : containing his microscopical discoveries in many of the works of nature / translated from the Dutch and Latin editions published by the author, by Samuel Hoole.

2 (text)

The select works of Antony van Leeuwenhoek : containing his microscopical discoveries in many of the works of nature / translated from the Dutch and Latin editions published by the author, by Samuel Hoole.

1 (text)

Letter from van Dockum to William Tudor,

One letter in French.