Matti van Engelen

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—We study the topology of the Megaparsec Cosmic Web in terms of the scale-dependent Betti numbers, which formalize the topological information content of the cosmic mass distribution. While the Betti numbers do not fully quantify topology, they extend the information beyond conventional cosmological studies of topology in terms of genus and Euler(More)
EDITOR—Nijmegen breakage syndrome (NBS) is a rare autosomal recessive chromosomal instability disorder characterised by micro-cephaly, immunodeficiency, x ray hypersensi-tivity, and predisposition to malignancy. The gene responsible for NBS, NBS1, is located on chromosome 8q21 and encodes a protein called nibrin. This protein is a component of the(More)
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