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57 papers · 1 filter
CMB Anisotropy in COBE-DMR-Normalized Flat CDM Cosmogony
Bharat Ratra, Naoshi Sugiyama
We compute the cosmic microwave background (CMB) anisotropy in a low-density, flat, cosmological constant, cold dark matter model which is normalized to the two-year COBE DMR sky m…
CMB Anisotropy in COBE-DMR-Normalized Open CDM Cosmogony
Bharat Ratra, Anthony J. Banday, Krzysztof M. Gorski +1
We compute the CMB anisotropy in an open inflation CDM model which is normalized to the two-year DMR sky map. Presently available CMB data is consistent with ,…
CCD Photometry of Nova V1500 Cygni Twenty Years After
I. Semeniuk, A. Olech, M. Nalezyty
We report on CCD photometry of Nova V1500 Cygni obtained in July 1995 to show that twenty years after outburst, being of about 18~mag, the star can still be observed with small tel…
Time-Reversal and Irreversibility
A. Bohm, P. Kielanowski
The time reversal and irreversibility in conventional quantum mechanics are compared with those of the rigged Hilbert space quantum mechanics. We discuss the time evolution of Gamo…
Koszul Theorem for S-Lie coalgebras
J. Rozanski
For a symmetry braid S-Lie coalgebras, as a dual object to algebras introduced by Gurevich, are considered. For an Young antisymmetrizer an S-exterior algebra is introduced. From t…
Braided antisymmetrizer as bialgebra homomorphism
J. Rozanski
For an Yang Baxter operator we show that a bialgebra homomorphism from a free braided tensor bialgebra to a cofree braided shuffle bialgebra is the Woronowicz braided antisymmetriz…