ar X iv : m at h / 99 06 07 7 v 1 [ m at h . Q A ] 1 1 Ju n 19 99 ON A COMBINATORIAL IDENTITY

ar X iv : m at h / 99 06 19 7 v 1 [ m at h . G T ] 2 8 Ju n 19 99 The size of spanning disks for polygonal knots .

For each integer n ≥ 1 we construct a closed unknotted Piecewise Linear curve Kn in R 3 having less than 11n edges with the property that any Piecewise Linear triangluated disk spanning the curve contains at least 2 triangles.

ar X iv : m at h / 99 06 16 4 v 1 [ m at h . D S ] 2 4 Ju n 19 99 LINEAR FLOWS ON κ - SOLENOIDS

Linear flows on inverse limits of tori are defined and it is shown that two linear flows on an inverse limit of tori are equivalent if and only if there is an automorphism of the inverse limit generating the equivalence.

ar X iv : h ep - p h / 99 06 40 2 v 1 1 7 Ju n 19 99 1 Low mass lepton pair production in hadron collisions

The hadroproduction of lepton pairs with mass Q and transverse momentum QT can be described in pertur-bative QCD by the same partonic subprocesses as prompt photon production. We demonstrate that, like prompt photon production, lepton pair production is dominated by quark-gluon scattering in the region QT > Q/2. This leads to sensitivity to the gluon density in kinematical regimes that are acce...

ar X iv : h ep - e x / 99 06 02 8 v 1 1 6 Ju n 19 99 1 Future Polarised DIS Fixed Target Experiments

New experiments in polarised deep inelastic scattering will mainly concentrate on the measurement of semi-inclusive asymmetries. Especially, the upgraded HERMES experiment at DESY and the newly build COMPASS experiment at CERN will investigate the gluon polarisation via open charm and high pT hadron pair production , study in detail the flavour decomposition of the quark helicity distributions ...

ar X iv : m at h / 98 08 06 5 v 1 [ m at h . Q A ] 1 4 A ug 1 99 8 QUANTUM DETERMINANTS AND QUASIDETERMINANTS