We present proofs of Hurewicz's and Pawlikowski's Theorems concerning topological games, but in the context lattices, which one cannot argue with points.

RADIO pulsars are thought to born with spin periods of 0.02−0.5 s 1,2,3 and space velocities of 100-1000 km s −14,5 , and they are inferred to have initial dipole magnetic fields of 10 11 − 10 13 G 2. The average space velocity of a normal star in the Milky Way is only 30 km s −1 , which means that pulsars must receive a substantial 'kick' at birth. Here we propose that the birth characteristic...

We investigate game-theoretic properties of selection principles related to weaker forms of the Menger and Rothberger properties. For appropriate spaces some of these selection principles are characterized in terms of a corresponding game. We use generic extensions by Cohen reals to illustrate the necessity of some of the hypotheses in our theorems.

Let X be a set of reals. We show that • X has property C′′ of Rothberger iff for all closed F ⊆ R×R with vertical sections Fx (x ∈ X) null, ⋃ x∈X Fx is null; • X has strong measure zero iff for all closed F ⊆ R×R with all vertical sections Fx (x ∈ R) null, x∈X Fx is null.

The planetary nebula M94–20 in the Large Magellanic Cloud was serendipitously observed with the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope as part of the Hubble Space Telescope Archival Pure Parallel Program. We present spatially resolved imaging and spectral data of the nebula and compare them with ground based data, including detection of several emission lines f...

The planetary nebula M94–20 in the Large Magellanic Cloud was serendipitously observed with the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope as part of the Hubble Space Telescope Archival Pure Parallel Program. We present spatially resolved imaging and spectral data of the nebula and compare them with ground based data, including detection of several emission lines f...

A small asymmetry in the flux of neutrinos emitted by a hot newly-born neutron star could explain the observed motions of pulsars. However, even in the presence of parity-violating processes with anisotropic scattering amplitudes, no asymmetry is generated in thermal equilibrium. We explain why this no-go theorem stymies some of the proposed explanations for the pulsar “kick” velocities. CERN-T...

We obtained high dispersion spectroscopy of CI Cam, the optical counterpart of XTE J0421+560, two weeks after the peak of its short outburst in 1998 April. The optical counterpart is a supergiant B[e] star that is emitting a two-component wind, a cool, low-velocity wind and a hot, high-velocity wind. The cool wind, which is the source of narrow emission lines of neutral and ionized metals, has ...