Biomedical subjects

F B Fuller

Publications and source records attributed to F B Fuller.

3 recordsLinked to original sources

PubMed1978

Decomposition of the linking number of a closed ribbon: A problem from molecular biology.

A closed duplex DNA molecule relaxed and containing nucleosomes has a different linking number from the same molecule relaxed and without nucleosomes. What does this say about the structure of the nucleosome? A mathematical study of this question is made, representing the DNA molecule by a ribbon. It is shown that the linking number of a closed ribbon can be decomposed into the linking number of a reference ribbon plus a sum of locally determined "linking differences."

Journal Article↗

PubMed1971

The writhing number of a space curve.

A geometric invariant of a space curve, the writhing number, is defined and studied. For the central curve of a twisted cord the writhing number measures the extent to which coiling of the central curve has relieved local twisting of the cord. This study originated in response to questions that arise in the study of supercoiled double-stranded DNA rings.

DNA↗

PubMed1954

HARMONIC MAPPINGS.

Explore the source record for details and available documents.

Journal Article↗