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- University of MichiganUS51 papers
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11 papers · 1 filter
A New Look At Carbon Abundances In Planetary Nebulae. IV. Implications For Stellar Nucleosynthesis
R. B. C. Henry, K. B. Kwitter, J. A. Bates
This paper is the fourth and final report on a project designed to study carbon abundances in a sample of planetary nebulae representing a broad range in progenitor mass and metall…
Abundance Patterns in Planetary Nebulae
Karen B. Kwitter, Richard C. Henry
We previously determined abundances of He, C, N, O, and Ne for a sample of planetary nebulae (PNe) representing a broad range in progenitor mass and metallicity, and we now compare…
Global Structures on CR Manifolds via Nash Blow-ups
Thomas Garrity
A generic compact real codimension two submanifold X of C^(n+2) will have a CR structure at all but a finite number of points (failing at the complex jump points J). The main theor…
On relations of invariants for vector-valued forms
Thomas Garrity, Zachary Grossman
An algorithm is given for computing explicit formulas for the generators of relations among the invariant rational functions for vector-valued bilinear forms. These formulas have a…
The HST Key Project on the Extragalactic Distance Scale XXV. A Recalibration of Cepheid Distances to Type Ia Supernovae and the Value of the Hubble Constant
Brad K. Gibson, Peter B. Stetson, Wendy L. Freedman +14
Cepheid-based distances to seven Type Ia supernovae (SNe)-host galaxies have been derived using the standard HST Key Project on the Extragalactic Distance Scale pipeline. For the f…
Distributed Entanglement
Valerie Coffman, Joydip Kundu, William K. Wootters
Consider three qubits A, B, and C which may be entangled with each other. We show that there is a trade-off between A's entanglement with B and its entanglement with C. This relati…