Jan Hellwig (1931-2000)

M3I PPR Jan-Jun 2000

Legal Notices The information in this document is subject to change without notice. The Members of the M3I Consortium make no warranty of any kind with regard to this document, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The Members of the M3I Consortium shall not be held liable for errors contained herein or direct, indirect, s...

M3I PPR Jan-Jun 2000

∗ Jan

We formulate a complete path integral bosonization procedure for any fermionic theory in two dimensions. The classical action of the bosons in the bosonized theory is −i times the logarithm of the Jacobian of a local chiral transformation, with the boson fields as transformation parameters. Three examples, the Schwinger model, the massive Thirring model and massive non-Abelian bosonization, are...

Op-brhe130268 1931..1932

We have known about the strong association between AS and the HLA-B*27 (B*27) gene for the past 40 years; however, the mechanism with which only some allomorphs of the HLA-B27 molecule, as well as some other HLA class I molecules, are involved in the occurrence of SpAs is still unclear [1]. In this issue of Rheumatology, Cauli et al. [2] present data that may aid our understanding of this mecha...

Observations concerning Gödel’s 1931

This article demonstrates the invalidity of Theorem VI in Gödel’s 1931, showing that propositions (15) and (16), derived from the definition 8.1, in its proof, are false in PA. Introduction. Developed as a consequence of the crisis of the foundation of mathematics due to the discovery of the antinomies, Hilbert’s formalism planned as criterions of adequacy for the axiomatic systems, the achieve...