Second list of new double stars

The Second Stars

The ejecta of the first probably very massive stars polluted the Big Bang primordial element mix with the first heavier elements. The resulting ultra metal-poor abundance distribution provided the initial conditions for the second stars of a wide range of initial masses reaching down to intermediate and low masses. The importance of these second stars for understanding the origin of the element...

Second Type Stars of Low Mean Density.

1 Rosancff, A. J., and Florence Orr, A study of insanity in the light of the Mendelian theory, Amer. J. Insanity, 68, 221-261 (1911), also Eugenics Record Ofice BsU., No. 5. 2 Ridin, E., Einige Wege und Ziele der Familienforschung, mit Rucksicht auf die Psychiatrie, Zs. ges. Neurol. Psychiat., 7 (Hft. 5), 487-585 (1911). 8 Galton, F., History of Twins, in Inquiries into human faculty and its de...

List of Contents

Graph Choosability and Double List Colorability

In this paper, we give a sufficient condition for graph choosability, based on Combinatorial Nullstellensatz and a specific property, called “double list colorability”, which means that there is a list assignment for which there are exactly two admissible colorings.

Anti-Ramsey numbers of spanning double stars

In this paper we shall prove and sharpen a conjecture of A. Bialostocki on anti-Ramsey colorings of the complete graph Kn. Assume the edges of a Kn are colored by t colors. The basic question is how many colors ensure that Kn has a spanning subtree of diameter at most d in which each edge has a different color. The surprising fact is that the answers are the same for every d ≥ 3. Moreover, we c...